tag:blogger.com,1999:blog-30306227530468085102024-03-06T01:15:40.084+00:00Forest Fighters Pi Wars 2020Forest Fightershttp://www.blogger.com/profile/11465257900155514737noreply@blogger.comBlogger15125tag:blogger.com,1999:blog-3030622753046808510.post-83481743502856778832020-04-25T16:31:00.003+01:002020-04-25T16:31:34.469+01:00Virtual Pi Wars! <div style="text-align: center;">
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Virtual Pi Wars has arrived!</div>
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<a href="https://www.youtube.com/watch?v=rx7t38hEMDY">Come watch the full video here!</a><br /><br /><a href="https://youtu.be/MKfDlpZkcC8">Watch our entry here!</a><br /><br />:3</div>
Forest Fightershttp://www.blogger.com/profile/11465257900155514737noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-9365305031202900642020-03-06T11:13:00.001+00:002020-03-06T21:43:10.090+00:00Calibration - Seeing Red<br />
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So our Pi Wars robot needs to "see red". Forest Fighters are not going to need to pick up different colours as we are not doing the Eco-Disaster challenge autonomously.<br />
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However we do want to attempt the Minesweeper challenge which requires detection of red.<br />
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Detecting a colour is simplest when the colour space is viewed in HSV as the Hue for a particular colour remains in a tight range independent of the Saturation and Value (Brightness)<br />
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<a href="https://upload.wikimedia.org/wikipedia/commons/thumb/3/33/HSV_color_solid_cylinder_saturation_gray.png/1280px-HSV_color_solid_cylinder_saturation_gray.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="300" src="https://upload.wikimedia.org/wikipedia/commons/thumb/3/33/HSV_color_solid_cylinder_saturation_gray.png/1280px-HSV_color_solid_cylinder_saturation_gray.png" width="400" /></a></div>
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<i>HSV_color_solid_cylinder.png: SharkDderivative work: SharkD Talk - HSV_color_solid_cylinder.png, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=9801673</i></div>
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Normally red hue values appear across the beginning and end of the range which means typically you have to compare across two ranges, twice as much computation, slowing your frame rate and ultimately slowing the robot. In the above example with a cylinder we will assume that red starts at 340 degrees and finishes at 20 degrees creating two ranges 340 to 359 and 0 to 20.</div>
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However there is a very neat trick you can do to move the red range to where the blue is by turning the cylinder. So here is the trick....</div>
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Rather than telling Open CV that the camera frame is BGR we do an RGB to HSV conversion instead. This means the red hue value rather than being centred on zero is moved to the blue and centered around 170. Making finding red objects much neater.</div>
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Take an BGR image from the Pi Camera and in Python Open CV use:</div>
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imgHSV = cv2.cvtColor(image, cv2.COLOR_RGB2HSV)</div>
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Then look for your red object where the blue would be. Simples!!!</div>
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Colour detection needs good lighting ( or at least constant lighting ) and at the event the lighting will be very different to how we have been testing, so we have a spare Pi with camera,a 3.5" touch screen and power bank attached to do some calibration testing.</div>
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Note the HSV range is displayed across the top of the screen and some on screen "buttons" allow us to change the values.</div>
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<i>Pi Calibration - Ready to "See Red"</i></div>
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Some video of the calibration program in action.</div>
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<br />Forest Fightershttp://www.blogger.com/profile/05860957439271142601noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-45061623459981522992020-03-02T20:42:00.000+00:002020-03-02T20:49:29.163+00:00Look out! Here comes Audrey 3!<div style="text-align: center;">
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Amy has finished painting Audrey III!<span id="goog_279973645"></span><span id="goog_279973646"></span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi2KsPv6C_5WbIRlVdx4lk9x5SjQhZc1zKO0oLg9vDja-1TNKdlaIWHk9fsI2_qbTDWY7Qssh31z8voeu3J-HJvGhEipfNW7tJ6UQVpMcBlHkfJap_p15zkfk6lbNBhzxtv2fwmD9ka9ic/s1600/AudreyIIIReverse.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1280" data-original-width="720" height="200" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi2KsPv6C_5WbIRlVdx4lk9x5SjQhZc1zKO0oLg9vDja-1TNKdlaIWHk9fsI2_qbTDWY7Qssh31z8voeu3J-HJvGhEipfNW7tJ6UQVpMcBlHkfJap_p15zkfk6lbNBhzxtv2fwmD9ka9ic/s200/AudreyIIIReverse.jpeg" width="112" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQbzCUY8Rq3qBVN_o3udPw0locq4la60RpnoZm0Smgg9Pw3tHErMU9e0Schlrdtb8qLexS2VDePR8GfFULtlm5jUi5pQWnGdP_2sprJq1p_gA95lDDKqP-f5dEV2gNA0VbdTYatgZGRog/s1600/AudreyIII.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1280" data-original-width="720" height="200" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQbzCUY8Rq3qBVN_o3udPw0locq4la60RpnoZm0Smgg9Pw3tHErMU9e0Schlrdtb8qLexS2VDePR8GfFULtlm5jUi5pQWnGdP_2sprJq1p_gA95lDDKqP-f5dEV2gNA0VbdTYatgZGRog/s200/AudreyIII.jpeg" width="112" /></a></div>
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For comparison. Here is Audrey pre-makeover.</div>
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She used 5 different paints all brought from the Model Railway Shop mentioned in the last post: a mid-tone green, a dark blue, a tan-yellow colour, a crimson and an off-white.<br />
The colours weren't ideal since the tops of the lids misleading but Amy is still very happy with the project. She even made some gradients along the leaves, tentacles??? and body of the plant.<br />
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Now that Audrey has successfully taken over Eumiísdahd's table, there is no doubt he'll be able to take over the world!</div>
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Forest Fightershttp://www.blogger.com/profile/11465257900155514737noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-19437706476397394552020-03-01T19:09:00.000+00:002020-03-01T19:09:31.399+00:00Neat Plans and Spray Cans <div style="text-align: center;">
Over the weekend, Amiessdad and Amy have decided to get to work on smoothing, priming and painting the robot!</div>
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We purchased some spray paint and primer from our local art supplies store and made sure to stay protected from inhaling too much paint!</div>
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These may also come in handy in the event of a coronavirus outbreak... (;'<span style="background-color: white; color: #242729; font-family: Arial, "Helvetica Neue", Helvetica, sans-serif; font-size: 15px;">∀`)</span></div>
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<span style="background-color: white; color: #242729; font-size: 15px;"><span style="font-family: inherit;">Unfortunately, both Amy and Umiesdoahd have forgotten to take any kind of process pictures but it mostly consisted of taking the robot apart, using a 3D pen to fill in holes in the print, painting it and putting it back together. </span></span></div>
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<span style="color: #242729;"><span style="background-color: white; font-size: 15px;">The gang also bought some small paints, faux grass and little pieces of shrubbery from a model railway store. However, Amy has been refrained from putting a l l t h e p l a n t s onto the robot because she has been warned they may fall off if kept on for weeks before the event. </span></span></div>
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<span style="color: #242729;"><span style="background-color: white; font-size: 15px;">Stay tuned for a future blog update where she paints Audrey!</span></span></div>
Forest Fightershttp://www.blogger.com/profile/11465257900155514737noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-56084076416959673722020-02-15T16:04:00.003+00:002020-02-15T16:09:18.824+00:00Don't Drive The Plants!!<div style="text-align: center;">
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Today, Aémisdaud and Amy did some driving practice using their newly installed grabber to practice the eco-disaster challenge.</div>
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However, they had an unexpected visitor...</div>
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They are going to attempt this challenge remote-controlled so they felt it was important Amy had some practice using the grabber tool. The green barrels should be picked up and put into the blue section and the red barrels should be put in the yellow section. You can read more about the rules for this challenge <a href="http://here./">here</a>.</div>
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However, the had trouble picking fallen-over barrels up due to the grabber being too high. Ameezdhad intended for Amy to be able to do so so this may be a problem. Look forward to a follow-up post sometime later this weekend detailing a redesign of the grabber. :)</div>
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Now that both Amy and Mia are more accustomed to the robot, progress should skyrocket! </div>
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Forest Fightershttp://www.blogger.com/profile/11465257900155514737noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-18955961687164685682020-02-06T23:41:00.001+00:002020-02-15T15:27:29.010+00:00Active cooling<br />
With a Pi4 in the middle of Audrey III and 4 heavy-duty motors, things might get a bit hot so we have fitted a fan to the top layer. This will pull hot air out and the holes in the back and side will allow some airflow over the boards.<br />
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The Pi was running at around 68 degrees and with the fan about 55 depending on what it's doing so we should not have any overheating, the Pi starts to throttle at 80C so better safe than sorry. This is especially true when you are trying to eek out as many frames per second as you can for the line following.<br />
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Here's a couple of pictures with a cutaway of the internals.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJGfRzy_Db-HsD4XMXachwCjWCCjz9WuARW3kF28BU60CD3ZiH9DmpeiE26yfJZmUNINW5Ms6q3pkEhEpk301N1BE8eSmvMdYqE3yfRtxLlnVtcasst8YHxH2l34eRS7gfy_SIpfsQWa4R/s1600/TinkerCad+Design.png" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJGfRzy_Db-HsD4XMXachwCjWCCjz9WuARW3kF28BU60CD3ZiH9DmpeiE26yfJZmUNINW5Ms6q3pkEhEpk301N1BE8eSmvMdYqE3yfRtxLlnVtcasst8YHxH2l34eRS7gfy_SIpfsQWa4R/s400/TinkerCad+Design.png" width="400" /></a></div>
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You may be wondering about the crudely cut fan hole in the top; The top layer is now being reprinted after testing with the hacked version.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhKNMcZOIt45Q9p5a84KiSKiwzG0aLINxROKcEA6M-5gDVs4UC88wu2IHyjHxJCWRzXZUPxRojvCXpIv2mRXnSEKNxodHZ3ml-WDLX2B_G8XSELqAAaAQ06_oo41P7hmU1ES-hMUSNwPgWc/s1600/Screenshot+from+2020-02-06+23-38-28.png" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="942" data-original-width="1187" height="316" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhKNMcZOIt45Q9p5a84KiSKiwzG0aLINxROKcEA6M-5gDVs4UC88wu2IHyjHxJCWRzXZUPxRojvCXpIv2mRXnSEKNxodHZ3ml-WDLX2B_G8XSELqAAaAQ06_oo41P7hmU1ES-hMUSNwPgWc/s400/Screenshot+from+2020-02-06+23-38-28.png" width="400" /></a></div>
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<br />Forest Fightershttp://www.blogger.com/profile/05860957439271142601noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-23000330467017882172020-01-26T21:50:00.000+00:002020-02-15T15:36:28.084+00:00<span style="font-size: x-large;">More claw.....</span><br />
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We have finally got around to attaching the claw to the front of the robot, (now officially known as Audrey III) and updated the software to activate it with the controller.<br />
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New grippers were 3d printed to grip the barrels a little better and the claw mounted low enough to be able to grab a barrel even if its has fallen over.</div>
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Why Audrey III? Here is a clue from 1983...</div>
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<br />Forest Fightershttp://www.blogger.com/profile/05860957439271142601noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-10737645513676717422020-01-19T13:03:00.001+00:002020-01-19T13:03:18.151+00:00Finished Icons!<div style="text-align: center;">
Now that Amy's PREs are finished, she has had time to finish the last few icons! There have even been a couple changes to the few icons that she originally featured in <a href="https://forestfighterspiwars2020.blogspot.com/2019/12/happy-new-year.html">this post</a>!<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg77vQ3LvO-DjF0oDuE-KOUJwue2xaCy30FFI0snlDnANDZgtbEORQQUwAdPiLqOrzisQ-IJ8Go4-YMLQJgCCQGz4x-D7yrTLRXawog5cmZWhkBK_GkJysaBNnNyeZ3UQH9inTsBtah_KA/s1600/Joystick+Not+Found+Menu+Icon+PiWars+2020.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="150" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg77vQ3LvO-DjF0oDuE-KOUJwue2xaCy30FFI0snlDnANDZgtbEORQQUwAdPiLqOrzisQ-IJ8Go4-YMLQJgCCQGz4x-D7yrTLRXawog5cmZWhkBK_GkJysaBNnNyeZ3UQH9inTsBtah_KA/s200/Joystick+Not+Found+Menu+Icon+PiWars+2020.jpg" width="200" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0hcn7Wi40nenvQ4IQoT9pm4kHox_fvIqPjElji300GiksIEB-6XIOLj6fwR39n2Az2rVt0glN4lV0BiLBTRMgRXCNxnaHCs7SrAtZIlf8a6LHHni3iH4_UO512BR9xDj43QfmHg5ooD4/s1600/Menu+Icon+PiWars+2020.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="150" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0hcn7Wi40nenvQ4IQoT9pm4kHox_fvIqPjElji300GiksIEB-6XIOLj6fwR39n2Az2rVt0glN4lV0BiLBTRMgRXCNxnaHCs7SrAtZIlf8a6LHHni3iH4_UO512BR9xDj43QfmHg5ooD4/s200/Menu+Icon+PiWars+2020.jpg" width="200" /></a></div>
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<span id="goog_1674275359"></span><span id="goog_1674275360"></span>She's made: icons for the challenges the team are hoping to complete autonomously,<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwShNIQzHsOFKTyyyqbQPOihRTc-wkBTJ6StVq_Vw96DZJgVoBCmdmeWXY0CajuNEJYgMk-j16hpbh8G0gobCo6lq74V8STYM1q9V_K6eASp-lOWmHPBUaS_geCYIaTBMedvWh-ppipH0/s1600/Minesweeper+Menu+Icon+PiWars+2020.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="150" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwShNIQzHsOFKTyyyqbQPOihRTc-wkBTJ6StVq_Vw96DZJgVoBCmdmeWXY0CajuNEJYgMk-j16hpbh8G0gobCo6lq74V8STYM1q9V_K6eASp-lOWmHPBUaS_geCYIaTBMedvWh-ppipH0/s200/Minesweeper+Menu+Icon+PiWars+2020.jpg" width="200" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPWaY27uaJuvQ1u1NAk99tyPZ5cklNPPbCJ92WOGFNRblNZEObUJlQZGXFK1zJaclGAEMBapRL92Hg1Yj6EMXMfk0DHz0QX_q_ZJMIVQ-q3XhCBWxGB0rn2isrOZFukp2V1f-lRYSolBQ/s1600/Lava+Palava+Menu+Icon+PiWars+202.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="150" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiPWaY27uaJuvQ1u1NAk99tyPZ5cklNPPbCJ92WOGFNRblNZEObUJlQZGXFK1zJaclGAEMBapRL92Hg1Yj6EMXMfk0DHz0QX_q_ZJMIVQ-q3XhCBWxGB0rn2isrOZFukp2V1f-lRYSolBQ/s200/Lava+Palava+Menu+Icon+PiWars+202.jpg" width="200" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbk89L8kP0wXUCqeRzJKn9kfSGOz3UPnJFShmFRVHC1KPmo4BjnQrtSHcO3AyDnpC5-9v-876so9GWn7qAxHaD9s-1fqGI-IFX7Kl_47_ahcSnqH8kK4lktowJJn3VEVos2wmJBZysgZ0/s1600/Blind+Maze+PiWars+2020.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="150" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbk89L8kP0wXUCqeRzJKn9kfSGOz3UPnJFShmFRVHC1KPmo4BjnQrtSHcO3AyDnpC5-9v-876so9GWn7qAxHaD9s-1fqGI-IFX7Kl_47_ahcSnqH8kK4lktowJJn3VEVos2wmJBZysgZ0/s200/Blind+Maze+PiWars+2020.jpg" width="200" /></a></div>
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As well as, an icon for the remote-controlled challenges,<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgAiwy1oEnWQzLZOu4w0KSSC5P4GTau637FFuHUfots-536axb2fJ3tKOulnCtViLfONQxVyNyT4c-bSojHXoDq7dHEly0flVpcya_QwzSaz7FRKfsV3dj9_4tO2kk_meAu44a8wbmdveo/s1600/Remote-Controlled+Mode+Menu+Icon+PiWars+2020.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgAiwy1oEnWQzLZOu4w0KSSC5P4GTau637FFuHUfots-536axb2fJ3tKOulnCtViLfONQxVyNyT4c-bSojHXoDq7dHEly0flVpcya_QwzSaz7FRKfsV3dj9_4tO2kk_meAu44a8wbmdveo/s320/Remote-Controlled+Mode+Menu+Icon+PiWars+2020.jpg" width="320" /></a></div>
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an icon for exiting the menu and an icon for shutting down the program!</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhHVP4CIoIM29dnLIlUx7cX4kVmgIx6CB8nVg-IDn6-r8J1zyX4QMAoznOABiA56UdV2flDARBgqnvjnHcmB9CP3SWTQ4sJ9tkKC_J8kwVmnGXtCQekAQ9h3yD8w_2W9PIS9JSorBqK-vI/s1600/Halt+Icon+PiWars+2020.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="150" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhHVP4CIoIM29dnLIlUx7cX4kVmgIx6CB8nVg-IDn6-r8J1zyX4QMAoznOABiA56UdV2flDARBgqnvjnHcmB9CP3SWTQ4sJ9tkKC_J8kwVmnGXtCQekAQ9h3yD8w_2W9PIS9JSorBqK-vI/s200/Halt+Icon+PiWars+2020.jpg" width="200" /></a><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhAszOn0gg-ON3l4qNgyoYnxOAeo-bANe9N7osIK96-c53JZICESKQ3lqQfXN0p_oaXD_TmnQucjTF0Edk6OcGbaZ7QKlZFt3gWwf8fPaueKfmzGkQ88GQsD5LQFnAPIb8PITXy3u_uREA/s1600/Exit+Icon+Pi+Wars+2020.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="150" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhAszOn0gg-ON3l4qNgyoYnxOAeo-bANe9N7osIK96-c53JZICESKQ3lqQfXN0p_oaXD_TmnQucjTF0Edk6OcGbaZ7QKlZFt3gWwf8fPaueKfmzGkQ88GQsD5LQFnAPIb8PITXy3u_uREA/s200/Exit+Icon+Pi+Wars+2020.jpg" width="200" /></a></div>
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Hopefully, they are an improvement from last year's icons!</div>
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Forest Fightershttp://www.blogger.com/profile/11465257900155514737noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-18195923247036293442020-01-06T09:24:00.003+00:002020-01-06T09:24:54.432+00:00<h2>
More Tinkering....</h2>
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<span style="font-family: inherit;">You can find the final designs for the tinkercad components here:<br /><span style="background-color: white;"><br />Pi 4 - </span></span><a href="https://www.tinkercad.com/things/8KivNtf1FKl">https://www.tinkercad.com/things/8KivNtf1FKl</a></div>
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<span style="font-family: inherit;"><span style="background-color: white;">Cytron Controller - </span></span><a href="https://www.tinkercad.com/things/eFv9VlOqV5I">https://www.tinkercad.com/things/eFv9VlOqV5I</a></div>
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<span style="font-family: inherit;"><span style="background-color: white;">Motor - <a href="https://www.tinkercad.com/things/dnaYSluPyfh">https://www.tinkercad.com/things/dnaYSluPyfh</a></span></span></div>
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<span style="background-color: white; font-family: inherit;">Buck Converter - <a href="https://www.tinkercad.com/things/fE4WTthhzNd">https://www.tinkercad.com/things/fE4WTthhzNd</a></span></div>
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Forest Fightershttp://www.blogger.com/profile/05860957439271142601noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-34907719914632386532019-12-28T13:53:00.000+00:002019-12-28T13:53:33.812+00:00Tinkercad Triumphs <div style="text-align: center;">
Some more information regarding the 3D printed parts featured in yesterday's blog.</div>
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<img height="179" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhWxfJ1gQT2ZYDQZ1a80wxmyb9dbz5r7-FNnRCO9dsJVSanolcoYwkfT7TmsWDxHpddZOaW0dMgHbJ9tPi9FTIBFDABbmnOrSOty-Qq2wB35BMPpQU9ErLzcn2cynJrKshbElCvwQOvFRoc/w1403-h789-no/" width="320" /></div>
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These are the threaded inserts Eymeythdahd was putting together yesterday. He and Amy have been designing this and other models for their robot on Tinkercad.</div>
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<img height="176" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgHTnAV0qXiORZllCBr7QWkkdwu9QX1_hHPXAMjwUd0XFeM_MPRkfCa3d5dKoYwF77LYZBz3a7DAWRydDXL23JNz9ZBVt17cuzgu3a5sf3glsye0RM41KezuhE5gOUah6h4nkzntAgtxZoq/w1440-h638-no/" width="400" /></div>
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In other news, their motion compass has also arrived!</div>
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<img height="179" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhdLDz9PJHithbNn2WKodKK6qQG-Va3arFg5qlOQswWDtx_lVsFpdnxwUKi2n3KYnK3Q5irJ3nQvvNmaCPWtI3hjvisKsRUJ1C1NnTHw6anN0jm2gvi0kCIPZRUcKmmlH9hdZY8mvdvC8Gw/w1403-h789-no/" width="320" /></div>
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Here's some footage of it up and running:</div>
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Forest Fightershttp://www.blogger.com/profile/11465257900155514737noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-4048904531860569722019-12-27T19:55:00.000+00:002019-12-27T20:02:09.153+00:00Happy New Year!<div style="text-align: center;">
<span id="goog_1977718747"></span><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJCu0XrCaWyJwRdPNSzy2WCpAgTB_I-fGMxjI-UgqJoqD6J2bB1pu1Ohai4KC6EF-q0oPXj_bL1yJyAwTcxPc1VRTeRz8jKybiSM-FK1-4I9Yg8Sjo1P0cDglEzeU-eyI5t-ipo9v9O6E/s1600/New+Year+Post+PiWars+2020.jpg" imageanchor="1"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJCu0XrCaWyJwRdPNSzy2WCpAgTB_I-fGMxjI-UgqJoqD6J2bB1pu1Ohai4KC6EF-q0oPXj_bL1yJyAwTcxPc1VRTeRz8jKybiSM-FK1-4I9Yg8Sjo1P0cDglEzeU-eyI5t-ipo9v9O6E/s320/New+Year+Post+PiWars+2020.jpg" width="320" /></a></div>
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Now that school shows and Christmas are finished, Amy and Emisdud have more time to work on their entry and the blog!<br />
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Amy has started work on more menu item illustrations:<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgpbMDHXWCtveI4wDgbrJoJ2yM_BfzCEkMwy2ZgrRU79UDVgfKbSGXm9_VrTHyqNPVIzonJxqUbMyWTjEkcHt6Py_1nrmH5LGIrI-p-WELZEGTfikwhGfSd329_Lp3Vmsayp8fyiOhonfQ/s1600/Menu+Icon+PiWars+2020.jpg" imageanchor="1"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgpbMDHXWCtveI4wDgbrJoJ2yM_BfzCEkMwy2ZgrRU79UDVgfKbSGXm9_VrTHyqNPVIzonJxqUbMyWTjEkcHt6Py_1nrmH5LGIrI-p-WELZEGTfikwhGfSd329_Lp3Vmsayp8fyiOhonfQ/s320/Menu+Icon+PiWars+2020.jpg" width="320" /></a><br />
A starting screen<br />
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7pMiiI8Ce4Tw8y31yn_dSRLTYma4whZcsIDKTbAw1UuZOF2G-x-deO9gc0fHLSDUPyy_hTONNbjFpa_PeErBzxukyDEp_Nb0zfiWVOM9mFJ8akPKNO5gx29M4rnYEWYPBzmLuihPOcp8/s1600/Joystick+Not+Found+Menu+Icon+PiWars+2020.jpg" imageanchor="1"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7pMiiI8Ce4Tw8y31yn_dSRLTYma4whZcsIDKTbAw1UuZOF2G-x-deO9gc0fHLSDUPyy_hTONNbjFpa_PeErBzxukyDEp_Nb0zfiWVOM9mFJ8akPKNO5gx29M4rnYEWYPBzmLuihPOcp8/s320/Joystick+Not+Found+Menu+Icon+PiWars+2020.jpg" width="320" /></a><br />
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And a screen alerting the user that the joystick hasn't paired.<br />
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Today, Ámeizdoad put together some of the parts of the robot he had earlier 3D printed.<br />
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<img height="179" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjirD2wNKQMP4HAdG0r4dikAId1W28CmLHsnwJc18z4zw5R6ZxER7NX79o9KY9gohlAmIEOFBNElopqe5v0A01ItA1Y39ExXqTbsU9NJxRFJpexomAaNMh24rkxj4UO6g_CoIR4o9Xh2ByU/w1403-h789-no/" width="320" /><br />
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They also worked on the code for the menu using Thonny. </div>
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Forest Fightershttp://www.blogger.com/profile/11465257900155514737noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-84302972374698958862019-11-04T11:37:00.000+00:002019-11-05T18:57:26.487+00:00New Controller!We saw a tweet from Pimoroni about a new controller from 8BitDo...<br />
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NEW PRODUCT! 8BitDo SN30 Pro+ Bluetooth gamepad. This one is the bee’s knees!! Buttons, analog sticks, triggers, and even force feedback. Create custom button mappings and macros for your favourite games.<a href="https://t.co/r4xuZnnAcG">https://t.co/r4xuZnnAcG</a> <a href="https://t.co/PzI5AGAcCu">pic.twitter.com/PzI5AGAcCu</a></div>
— pimoroni (@pimoroni) <a href="https://twitter.com/pimoroni/status/1184846600776175623?ref_src=twsrc%5Etfw">October 17, 2019</a></blockquote>
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Amiizdad said he would add support to the @approx_eng python game pad library but, as it turns out, its an exact clone of the XBox controller, so it just works.<br />
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It's well made and has a rechargeable battery pack with a long discharge time, making it reasonable value for money, and has a USB C charging port.<br />
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However, most importantly, we have a nice controller for the Forest Fighters robot.<br />
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<img height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi_FzIuF9coc6_82O8NecgEMY_XaWtCsHX-y1zf5qSDywHx1cJYRCwSFyBBoXTMtVaewOWdiS3Z8uNBAsjbkT1zH2WbIaFTcP-pSMj_652OmSaEGKsGeSvpLhyZn4Tsqd6zlA7qYCLjSa9h/w1765-h993-no/" width="640" /><br />
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<br />Forest Fightershttp://www.blogger.com/profile/05860957439271142601noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-60376983496847609092019-11-03T13:00:00.000+00:002019-11-05T18:58:15.864+00:00All Hail The Claw!<br />
<iframe allowfullscreen="" class="giphy-embed" frameborder="0" height="261" src="https://giphy.com/embed/PKVcAkgTwM8OA" width="480"></iframe><br />
<a href="https://giphy.com/gifs/claw-machine-PKVcAkgTwM8OA"></a><br />
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So we need a way to pickup and carry barrels. Thankfully we don't need to do this autonomously.<br />
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A claw design on thingiverse leaped out at us...<br />
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<img height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYm2XqbBw5YhfeIcsLEZDsr_YPPEopFuizk9J-7FgDf0DGvLr-V4csJ64sV2POUObCmLwfXkKXb2SZvaDVHnEWnqyu9jTrOaJliy3IcsNDgHZjxPSl0b5tCrm4HAF1EPFut5l9NxvZkano/w1765-h993-no/" width="640" /><br />
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<img height="359" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg5L98hNOBKdVx8Zw_0FPwHfvk0m2Siqzp_Yob_6qe9TXIB8eI6wRxU-rPW7xQLuOwYUMfhQbV679_sFEEaKQoeH91SrPFzzsaqUL0BlrLMJqt6m5lOMiGgG4QA374hTQ6tX00T1RdsODU-/w1851-h1041-no/" width="640" /><br />
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It's quite long but depending on how it's mounted it should fit within the overall length requirement. The good thing is we can modify the grips to be more barrel friendly!<br />
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<br />Forest Fightershttp://www.blogger.com/profile/05860957439271142601noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-60725907148042817102019-11-02T13:00:00.000+00:002019-11-05T18:59:09.054+00:00Motor Controller Testing...<br />
Over the past few days, we have been comparing motor controllers and seeing how best to place 4 motors, 2 batteries, Pi and controller.<br />
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Basically, unless we have some complex belt drive we are limited with the width of the robot being as wide as the 2 x the width of the tyres + 2 x the length of the motors, and we want big tyres.<br />
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<img height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDIYrsUqEQe4Q9qZ2B6P1zijjWQOzv60hFBWveLUbHz4G-bOtv-Um8oCFlcebvtZH9_lmafB98SUWR_tXY_2gh6uRI-WKcUTl-SAsJsQv3srEOMsWS2XKmBemKwWR-A_xlgnxHZKmiUI7N/w1765-h993-no/" width="640" /><br />
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We found some nice 12mm hex hub wheels that were not too wide which also has some grip.<br />
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The length of the robot is less constrained, it obviously has to take the batteries we are using but the overall length (and height) will need to cope with our ball launcher, which will probably be the same as last year. ( 5, 6 and 5 scored in the duck shoot!! ).<br />
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We basically have a rolling chassis with the components laid out roughly where they will go.<br />
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<img height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhKgzugKbWs0-8qzJyzpp1WZSoaR6AxKqbXxieKCm4r2EY_xH6EmXQfkLd_MnvjMj7f1hALNi9E8ZP8bRGpVNLB_0Bq2FQ8KD_xSpJuAAE5lPTUsBLR2hSkSwYiiXNTUKRS1FCIihnOKfno/w1765-h993-no/" width="640" /><br />
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14V battery pack with motors mounted below and Pi and electronics above. Pi Camera for line following and remote navigation using pan and tilt mount.<br />
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<br />Forest Fightershttp://www.blogger.com/profile/05860957439271142601noreply@blogger.com0tag:blogger.com,1999:blog-3030622753046808510.post-45374001400586145772019-10-15T20:19:00.000+01:002019-11-05T18:59:15.879+00:00And so it begins...<div class="separator" style="clear: both; text-align: center;">
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Will Forest Fighters save the day? Keep posted! More updates soon!</div>
<br />Forest Fightershttp://www.blogger.com/profile/11465257900155514737noreply@blogger.com0