Review on 🔌 MakerFocus Arduino CAN-Bus Shield: Enhanced Compatibility and Performance by Dino Burks

I bought this to use with an ESP32 based Arduino clone. A lot of the issues I've had are a result of that choice, so I can't fault this board. However, the lack of documentation makes troubleshooting frustrating. For example it would be nice to know that CS is tied to pin 10. The example code didn't work for me (although in fairness I used the same library from another source - Seeedstudio - so it could have been different), and it took forever to figure out that the ICSP header was *required*. Other boards connect SCK, MISO, and MOSI to pins 13, 12, and 11. This board doesn't. To complicate things further, ESP32 boards don't have an ICSP header where it does on the Uno, so I didn't use the header on this board originally. After soldering the header in place and putting jumpers between the ICSP header and the SPI pins on the Arduino, this board seems to work fine on the Uno. I haven't connected it to the CAN bus yet. One more note: the ESP32 board doesn't work without a level switch, which is my next step.