Temper-ESP8266

Temper is a compact, low power temperature sensor based on ESP8266 and SHT30 with large 13x7 pixel led display.

• Low power, only consumes ~30-40uA while asleep. With 400mA battery it should last months on single charge.
• SHT30 provides very accurate, factory calibrated measurement capability.
• Super simple Web config (see screenshot here)
• Home Assistant compatible including auto-discovery, but can be used with any other platform supporting MQTT.
• 13x7 pixel led display
• TP4054 charging IC onboard for easy charging via USB
• Can be attached to a wall using magnets (see thingiverse for details).

How does this thing work?

• After it's set up in config portal, it periodically wakes up and publishes Temperature, Humidity and Battery percentage through MQTT
• Pushing the reset button will force send current data and show Temperature on the display

What you need to make it yourself

• Hot air station / reflow oven (SHT30 has pins at the bottom, can't be hand-soldered)
• Components listed in "PCB and BOM" directory (lcsc and aliexpress links provided)
• Plastic case (download on thingiverse)
• Hot glue to fixate pcb in the enclosure
• Patience
• You can order it with most of the components pre-assembled from JLCPCB (you can find Pick&Place + BOM + Gerber in the above mentioned directory). Partially assambled pcbs will cost you little over $60 for 10pcs, see components information in "PCB and BOM" directory.

Wiki

• Flashing
• Config portal
• Home Assistant
• Notes and considerations