Custom Development Board Projects.

MISC

USB-C breakout: https://github.com/jay94ks/elecdev/tree/main/misc/USB_C_BREAKOUT

Raspberry-Pi Silicon

RP2040

See this directory: https://github.com/jay94ks/elecdev/tree/main/rp2040
ARM® Cortex®-M0+ Dual-core, 32bit, QFN-56.
Features: 133 MHz max, 256kB SRAM, UART x2, SPI x2, I2C x2, PWM x 16 channel.

STM32

I love STMicroelectronics's TSSOP-20 and TSOP-8 (G03xJ6Mx). It is small, has few pins, is easy to use by plugging it into a breadboard, and has a simple peripheral circuit. I even like the size of the flash memory and the size of the built-in RAM. Additionally, they fit well on any board that can be made easily, and there is little need to configure an external clock circuit. I hope more chips will be released in TSSOP-20, TSSOP-16 or TSOP-8 versions. And it would be better if they could have USB DP/DM pins.

G030F6

See this directory: https://github.com/jay94ks/elecdev/tree/main/stm32/g030f6
ARM® Cortex®-M0, 32bit, TSOC-20.
Features: 64 MHz MAX, 32K Flash, 8K RAM, USART, SPI, I2C.
Board Size: 17.78 mm * 25.4 mm.
Price: about 2,800 KRW, 2.11 USD.

F042F6

See this directory: https://github.com/jay94ks/elecdev/tree/main/stm32/f042f6
ARM® Cortex®-M0, 32bit, TSOC-20.
Features: 48 MHz MAX, 32K Flash, 6K RAM, USART, SPI, USB FS, CAN, I2C.
Board Size: 22.86 mm * 32.05 mm.
Price: about 5,500 KRW, 4.15 USD.

G030K8

See this directory: https://github.com/jay94ks/elecdev/tree/main/stm32/g030k8

WCH

CH32V003F4P6

See this directory: https://github.com/jay94ks/elecdev/tree/main/wch/ch32v003f4p6

CH32V003F4U6

See this directory: https://github.com/jay94ks/elecdev/tree/main/wch/ch32v003f4u6