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The electronics of the Brick Sorting Machine are currently under heavy re-work. My goal is to make the build easier to reproduce and a key element of this is to reduce the electronics to a 1-box setup (having moth the machine control and the image processing on the Raspberry). The following electronics is the future setup after the re-work is completed. Thus currently this list is untested:
Compute and Camera
- Raspberry Pi 5 8GB ~83€
- Active Cooler ~6€
- Raspberry Pi Camera Module 3 Wide 12MP ~40€
(not the NoIR version) - 27W USB-C Power Supply ~13€
- Housing ~5€
- Needs space for active cooler and venting channels
- Needs outlet for Camera Serial Interface (CSI) port
Sum: approx. 150€
Motor Controllers & Servos
- 2x Servo Keyestudio 270° compatible to LEGO® bricks ~9€
- 1x Arduino Nano for the rotating Slide 1-5€
- DC Motor Controller for 9V LEGO® compatible motors
- As of now I did not find a zero-soldering, off-the-shelf solution for this. That’s why I am using several L293D dual H-bridges connected via GPIO to the Raspberry. As I am not an electronics professional I can neither recommend nor advise against using this solution. For this approach you need to do a small amount of soldering, use a pegboard or custom PCB.
- There is many small scale DC motor drivers on the market even with USB support. If you found a good solution I’d love to get a suggestion and open to integrate it with the software.
