TinyG motion control board for CNC

Description

Two TinyG multi-axis motion control boards: one fully functional, and one damaged.
Intended for CNC and other precise motion systems. More details are here:
https://synthetos.com/project/tinyg
The damaged one worked great until I got distracted and re-connected power backwards. A diode is blown, but the board might be fine once the diode is replaced.
The other one is fully functional and is mounted on a carrier support that includes a fan.