Nim for Embedded
Embedded questions are recurring in the forum and IRC/Gitter.

As a start MSP430
 - https://github.com/lonetech/nim-msp430
 - https://gitlab.com/jalexander8717/msp430f5510-nim

Nim on STM32F3
 - https://github.com/mwbrown/nim_stm32f3

Nim Arduino
 - https://github.com/gokr/ardunimo

I'm pretty sure @federicoceratto has some related repos as well