>long battery life - wifi networking to update display OTA Wifi is massive overkill for this kind of application and will be very difficult to make work for th

>long battery life - wifi networking to update display OTA Wifi is massive overkill for this kind of application and will be very difficult to make work for the power profile you want. Check out an alternative 2.4ghz protocol like zigbee, aka: https://hackaday.io/project/165467-papyr-nrf52840-epaper-display https://hackaday.io/project/165467-papyr-nrf52840-epaper-dis.... You can buy a zigbee router for less than 5 bucks, plug it into a pi zero and you have a zigbee > wifi bridge for less than 10 bucks.