EvvGC is simple 3/2axis, open source brushless gimbal controller based on STM32 and MPU6050. STM32F103RC was chosen because it is cheap, has enough processing power even for complex algorithms, and enough timers and other peripheral for 3axis control. Controller uses mosfets instead of L6234. This allows to use small, light weight mosfets (sot23, sot363) for Gopro controllers, and bigger mosfets (so8, D2PAK) for DSLR's, RED's and other big cameras. Source code is written with KEIL, which has demo version with 32kB of code limitation. Now ~20kB is used, so there is some space left for improvements. ST's Standard peripheral drivers uses most of the space, therefore low level coding for i2c, timers, uart should reduce code size if needed. Other software could be used, but KEIL is simple to use.
This is simple, flexible, high performance 2/3axis gimbal controller for cameras from Gopro to DSLR and bigger.
Net weight: 18g