Hanging Plant Monitor (ESP8266)

thingiverse

This is simply a box enclosure for a hang-on-the-back plant monitor that utilizes an ESP8266 NodeMCU to update an MQTT feed. I use this with Home Assistant to monitor a hanging plant that's situated in an unusual location. Sensors: ==================== - Node MCU / ESP8266 - DHT11 Ambient Temperature Sensor - Soil Temperature Probe, DS18B20 - Soil Moisture Sensor - Light Sensor Other parts: ==================== - 2 1N4001 Diodes - 220Ω resistor - Micro USB Cable - USB Wall Charger Script: ==================== Read the sensors and update the MQTT feed Notes: ==================== The NodeMCU board lacks sufficient ground pins for the sensors, so I've included a tiny perfboard component that I use to create a 4-pin groundrail. If you solder connections directly, you may not need it. Depending on your print settings, you might need to shave off bits of the tabs that attach the hook to the box and add a spot of hot glue from the inside. This option plugs into the wall outlet, but the script is optimized for deep sleep and wakes up for an update every 15 minutes. Therefore, theoretically, you could use a battery pack on the VIN and Ground pins, and it should last quite a while. With some neater wires, you could probably fit a 9v or small lipo pack in the housing.