Simple Line Following robot v2
I would first like to thank everyone who attended our Atlanta Maker Faire workshop. You were all great and I hope you enjoyed the workshop as much as I did. During the workshop many of you noticed a few mistakes in the wiring schematic, so as promised below is the updated electrical schematic:
Here’s my brother and I standing behind our booth at the Atlanta Mini-Makers’ Faire.
For those of you missed the Maker Faire workshop, the robot is completely open source and the design has a Creative Commons Attribution 3.0 license. Here’s are the files and drawings needed to reproduce the robot.
And here are the stereolithography (.STL) files to use in your 3D printer:
48004v4 3″ dia. wheel (qty-2)
48008v2 peg
48009v2 sensor light shield
48011v3 motor mounts (qty-2)
48012v2 base
In addition to the above 3D printed parts, you’ll also need the following purchased parts
Part No. | Description | Price | Qty | Extended Price | Supplier |
TCRT5000 | Optical sensor / reflective switch | $0.994 | 4 | $3.98 | http://www.newark.com |
9452K351 | Buna-n O-ring, As568a Dash Number 241 (pack of 50) | $11.21 | 1 | $11.21 | http://www.mcmaster.com |
Nano v3.0 | Arduino Nano micro-controller | $13.80 | 1 | $13.80 | kennymarket |
253471 | 120rpm 12vdc gearmotor 6mm shaft | $14.95 | 2 | $29.90 | jameco.com |
2159411 | Dual H-bridge | $19.95 | 1 | $19.95 | jameco |
24gauge wires & jumpers | Motor wire, jumpers, etc. | $3.00 | 1 | $3.00 | Various suppliers |
And finally you also need to make the sensor array PCB, here’s the PCB layout constructed using our Taig CNC machine.