I am running the Enviro Weather board on battery power via a LiPo battery attached to USB charger to reduce the heating effect of the USB. As I have unlimited power I have turned the polling and upload frequency up so both are set at 1 minute. I have noticed over time that there is a heating effect presumably from the WiFi chip on the board to a lesser extent than USB, but still significant when using these higher polling frequencies.
I am running the Enviro Weather board on battery power via a LiPo battery attached to USB charger to reduce the heating effect of the USB. As I have unlimited power I have turned the polling and upload frequency up so both are set at 1 minute. I have noticed over time that there is a heating effect presumably from the WiFi chip on the board to a lesser extent than USB, but still significant when using these higher polling frequencies.