While I wait for the Gauge to come from China, I ordered the 'pod' style version of what looks to be the same device, from Amazon. I have received it today.
Far from a black blob of epoxy.
We the well known stm32 clone gd32f103.
Also what looks to be jtag pins.
Potentially very hackable!
Note that the mini-USB on the back here is actually for a vehicle OBD connection, and will be expecting +12v as well as K-Line, L-Line, CAN-Hi/CAN-Lo, etc.. It's not a Mini-USB connection!
(in most web browsers, you can right-click on the images below and choose Open Image in New tab, to view at full resolution).
