I’m looking at the GY-952 board. It appears to be a typical Chinese module, with a multi axis accelerometer on it (like many other boards), but also with a 32-pin microcontroller which appears to be an STM32F051K8. That microcontroller has a 12 bit DAC channel which it appears to be using to provide an analog inclinometer voltage, as well as serial digital data of some sort.
Markings on the other chp (24pin) haven’t turned up anything, but I assume it’s an accelerometer/gyroscope sensor of some sort.
Here’s an example listing GY-952 6 axis serial port angular acceleration analog voltage output tilt angle | eBay A search for GY-952 will turn up a lot more.
Documentation on the board is close to non-existent as far as I can tell. I’ve found references to libraries for the GY-951 and GT-953, but nothing at all on the GY-952.
Has anyone seen any documentation on this? I can probably figure out the analog output(!), but guessing at the digital will be pretty hard. I assume the serial communication will be with some firmware in the STM32F051K8.
The pin info I’ve found suggests the VCC is 3-5V, Analog out is 0.1-2.9V, Tx and Rx are serial data TTL level and the B0, SWC and SWD pins are for some sort of internal use and not part of the user interface.
So I could probably wire it up, but how would I talk to it? I do not yet have one of these boards in hand.
Any suggestions welcome.