@CriticalSilence@social.tchncs.de
Post #1452230
2026-04-19 10:51 UTC
Yesterday the sun was shining bright. I decided to finally start my project of having a solar-charged LiPo to build an independent ESP-01 temperature sensor using a charging module.
I soldered the whole midday and added another temperature sensor on board to track the temp within the case.
Also, I added some switches to cut off power. As the charging module comes with USB, I tested the circuit and the charging with USB, before going outside. Everything works flawless!
Today, it's super cloudy and so...nothing happens. Dang.
#solar #esp01 #esp8266 #diy
Replies (1)
-
@Shdwdrgn@tech.lgbt 2026-04-19 18:02
@CriticalSilence Use a GPIO to control vcc to your I2C devices so they don't leach during sleep. Before deepsleep set WiFi.persistent, WiFi.disconnect, WiFi.forceSleepBegin, then WiFi.mode(WIFI_OFF). Anything to ensure the radio is completely off and the previous state was saved. When waking up you can resume the connection to speed it up -- may require the full WiFi.begin(SSID, PASS, config.channel, config.bssid, true) command, but newer libraries may have better memory of this state?