Save money and get a bunch of 1100mAh 3.7V LiPo batteries from AliExpress instead
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1
Infrared diode & phototransistor
Used to detect enemies and follow the line
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8
Logic Level FET N-Channel
Used to toggle infrared LED-s in order to save power
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1
20mm M3 spacers
Used to fix the servo motors between bottom and middle frame boards
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4
30mm M3 spacers
Used to fix the SumoCHIP daugherboard on the middle frame board
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4
Aluminium sheet 100x100m
Used to cut the plow, template included in the docs. Print the template on an adhesive paper, stick it to aluminium sheet, cut by the template and peel off the sticker
For modifying the PCB design if necessary, eg when you want to substitute some component footprints
Git
For working with the source code
PuTTY
For accessing the sumorobot's command line on Windows machine when setting up the robot for the first time
Hand tools and fabrication machines
Soldering iron (generic)
For soldering the components on SumoCHIP daugherboard
Cordless drill
For drilling holes in the plow, frame boards and PCB
3mm drill bit
For drilling mounting holes in the plow, frame boards and PCB
Story
Here at Robotics Club of Estonian IT College we have used sumorobots to teach kids about programming for ages. Up to now we used Arduino based robot which required a laptop with Arduino software to program the robot. In the beginning of 2016 we though we could make it better - get rid of the wires and make it programmable over the WiFi and also make it cheaper.
This is what we have now, a 9-dollar CHIP based robot which can be programmed over the air using your smartphone or any other WiFi enabled device:
Sumorobot charging it's batteries
The total price of the robot is around 30 USD. Instructions for building one are in the Git repository.
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