74HC164 SOP board The SP3 Racing F3 is

The SP3 Racing F3 is a high-performance flight controller built around the STM32F303 microcontroller — a next-generation 32-bit ARM CPU with a hardware floating-point unit (FPU) running at 72MHz

VIN (7–12V)

there are tons of documents and articles on the internet about it

voice commands are stored in one large group like a library

With its infrared technology and user-friendly interface

74HC164 SOP board The SP3 Racing F3 is74HC164 SOP registers feature AND gated serial inputs and an asynchronous clear (CLR) input. The gated serial (A and B) inputs permit complete control over incoming data; a low at either input inhibits entry of the new data and resets the first flip flop to the low level at the next clock (CLK) pulse. A high level input enables the other input, which then determines the state of the first flip flop. Data at the serial inputs can be changed while CLK