07 Feb 2019
PCB design made using a different motor driver IC. The new IC used has a significantly smaller footprint along with lower overall PCB cost. Capabilities of the IC are similar to the old ICs but with less control features that are outweighed by the improvement of smaller footprint and lower cost.
Features:
- Smaller PCB
- Lower component cost
- ATmega328P microcontroller
- All microcontroller pins broken out
Specs:
- ATmega328P microcontroller
- 5V operating voltage for drivers and microcontroller
- I2C motor drivers
- D9, D8, D5 and D4 are used for the limit of M0 to M3 motor drivers
- D13 LED
Further Work:
- General PCB design improvements for hand, e.g. better layout, more features, etc.

KiCAD: https://kicad-pcb.org/
Discussions
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