The blue pill is very popular (and cheap), and I've spent this weekend porting the TCD1304 driver firmware to it. It's a less capable chip than the STM32F401, there are limits to the applications. Most importantly, it doesn't support integration times longer than 82 ms.
The specifications are:
- MCLK of 800 kHz
- max t_int is 2¹⁶ / 800 kHz = 82 ms
- OS - PA1
- ICG - PA10
- SH - PB4
- MCLK - PA15
The board attaches as a virtual com-port, so the usual tools work ie. the pyCCDGUI and the CLI (UART).
Everybody loves pictures, so:
Get it while it's hot. Go to tcd1304.wordpress.com