@skysonic said in Temp, pressure, humidity + OLED: Great project what sketch have you used? i am very interested to make a temprature switch for my kitchen with that kind of display great work thank you! My sketch is based on bme280 temp, hum, pressure sketch plus the oled display. bye

@jumping Consider this: https://www.aliexpress.com/item/1PCS-TP5000-4-2V-3-6V-1A-Lithium-Battery-Charging-Board-Charger-Module/32756803176.html?ws_ab_test=searchweb0_0,searchweb201602_2_10065_10068_10084_10083_10080_10082_10081_10060_10061_10062_10056_10055_10037_10054_10033_10059_10032_10078_10079_10077_10073_10096_10070_10052_423_10050_424_10051,searchweb201603_2&btsid=e6d6960b-1c4d-48ce-b291-cde58e005c58 It's not as cheap as a TP4056, but it allows you to choose between battery technologies.

Hello @AWI thanks for you reply, I will read the document! With other sensors I use LiOn Nokia/Samsung battery, and it's ok! But I want to solve this little issue :smiley: