Pretty cool new #arduino #uno with an #espressif #esp 32 chip for #wifi and #usb https://store.arduino.cc/products/uno-r4.. Basically everything has been increased, this is quite #powerful !
The #wemos D1 R2 #arduino #uno #compatible #board sporting an #espressif #esp 8266 is still pretty cool, despite being quite old now. I have mine currently #powered from a super old #lipo via the #input , which should at #minimum accept 6V, running happily from 4.2V or less. A very impressive little device!