I'm also a fan of the Alchitry Au and Au+ boards as well - https://www.sparkfun.com/products/16527 https://www.sparkfun.com/products/16527 They have a lot more

I'm also a fan of the Alchitry Au and Au+ boards as well - https://www.sparkfun.com/products/16527 https://www.sparkfun.com/products/16527 They have a lot more IO available, but they're also out of stock until the chip shortage problems improve...