Philips Hue Remote for ESP8266

Print Notes

I recommend printing with a 0.2mm nozzle, using supports and a layer height of 0.06mm All fittings are made with high precision, so it is recommended to carefully insert each piece for snag-free operation No glue required  

BOM (WeMos D1 mini + 3 wake buttons)  

The model uses a CR2032 battery, so it is important to always use the ESP in deep sleep mode and only activate it to send commands If done this way, the estimated battery life is 10 months If the ESP is left active, the battery will not last more than 16 hours  

1. Diodes (x3)

• Standard option: 1N4148 (signal, DO-35)
• Schottky option (more voltage drop margin): 1N5817 / SS14 (SMD)
• Orientation: Anode to button/GPIO node, cathode to RST (the cathode is the banded side)

1. Capacitors per GPIO (x3)

• Recommended value: 100 nF (0.1 µF) ceramic X7R 50 V
  • If the ESP fails to read LOW, increase to 220 nF or 1 µF
• Connection: between GPIO (D1/D2/D5) and GND

1. RST pull-up resistor (x1, optional)

• 10 kΩ to 3V3 if your D1 mini does not have the pull-up from the factory (most do)

1. Buttons (x3)

• Momentary push buttons NO (normally open)

Pin Assignment (recommended)

• BTN1 → D1 (GPIO5) ⇒ State 1
• BTN2 → D2 (GPIO4) ⇒ State 2
• BTN3 → D5 (GPIO14) ⇒ State 4
• All buttons: the other side to GND
• From each button/GPIO node, a diode goes to RST (anode on the node, cathode to RST)
• GPIO↔GND capacitor on each pin (D1/D2/D5)

Assembly Tips

• Keep RST traces/wires short to prevent pickups
• First try with 100 nF If LOW is not detected when releasing the button (the sensor publishes 0), increase the capacitor on that GPIO
• Do not use D3 (GPIO0) or D4 (GPIO2) for wake buttons: these are boot pins and can block boot if they remain LOW