HeaterMeter MeterMonitor

thingiverse

A simple and partially complete panel layout for mounting 4x TM1637 0.56" 7-segment LEDs to display the current temperatures from a HeaterMeter using a Wemos D1 Mini ESP8266 module. Screws are M3x6mm socket cap, but a length of 6-10mm works and button head thread-forming would probably be better. This is all I had on hand. **Be sure to get the "DECIMAL" TM1637 units** and not the "CLOCK" units like I foolishly bought. The clock LED displays don't have the decimal points connected so you can't turn them on. Also note this is for 0.56" LEDs not 0.36". Wiring (Wemos D1 Mini -> TM1637): * D1 (GPIO5) -> CLK (all displays) * D2 (GPIO4) -> DIO Probe 0 display * D7 (GPIO13) -> DIO Probe 1 display * D6 (GPIO12) -> DIO Probe 2 display * D5 (GPIO14) -> DIO Probe 3 display Adding a capacitor to the 5V line helps with any flickering, I use 330uF/10V. MeterMonitor [Source Code](https://github.com/CapnBry/HeaterMeter/tree/master/arduino/MeterMonitor) [Video in action (YouTube)](https://www.youtube.com/watch?v=UgcSrizRqKU)