The 6-servo controller board can drive up to 6 servos, or 6 chains of WS2812B LEDs, using one of the world's cheapest microcontroller, the STM8S003F3P6.
This FW demonstrates its use to drive servos, and this other FW demonstrates its use to drive WS2812B LEDs.
There are two branches of this project:
Just a simple RED/GREEN blinky for the first tests.
Communication format is 115200 baud, no parity, one stop bit. Commands start with a command letter, and end with '\n'.
Rxx
Set red led intensity. xx is hexadecimal. 00 = off, FF = full on.
Gxx
Set green led intensity. xx is hexadecimal. 00 = off, FF = full on.
Pnxxxx
Set PWM for servo control.
n= 1..6.
xxxx= high time in milliseconds. Hexadecimal.
3E8= left position, 5DC= mid position, 7D0=right position.
Kn
Query key status. The answer will be Kns.
n = 1..3 key number. MODE = 1, UP = 2, DOWN = 3
s = 0..1 key status. Pressed = 1, not pressed = 0
UUU
Identify. And later may be used for automatic baud rate detection. Please send it first after power on.
V
Get version number.
@xx
Execute test command. Currently known commands:
Key press and release events are reported without asking in the following format:
kns
n = 1..3 key number. MODE = 1, UP = 2, DOWN = 3
s = 0..1 key status. Key make = 1, key break = 0