Slightly related: I’d love to see a cheap DevBoard available which can be programmed easily and runs well on battery. While ESP8266 and ESP32 dev boards can be programmed easily, they use a lot of power due to their added components and not energy saving way of making.<p>The ESP8266 and ESP32 chips are reasonably energy saving but there are afaik not
cheap boards which leveraged the property.<p>The SparkFun ESP8266 Thing [1] might come close, but is not very cheap.<p>[1]: <a href="https://www.sparkfun.com/products/13231" rel="nofollow">https://www.sparkfun.com/products/13231</a>