D1-mini Remote

This is a wired remote hand controller for use with the telescope mount's PicGoto Controller box. As per Ángel Caparròs' design, the RHC is based on D1-mini Wemos WiFi module and an OLED display to show actual celestial coordinates. It works connected to the PGT Controller via RJ9 TTL cable (see correct pin corrections here below) and wirelessly to a WiFi router. It share data and telescope mount control with an Android sky map app like SkySafari Pro in WiFi mode. The mount motors can be controlled simultaneously with the RHC's buttons or the SkySafari touch controls. The speed (Center, Guide, Find or Slew) can also be selected via RHC or SS app.

Hardware list

• Prototype shield
  • 5k Resistor (x3)
  • LED and resistor (optional)
• Right angle pin strip
• Female pin strip low profile
• Push button 6x6 h17 (x5, one h5-6 for the reset function)
• Push button plastic cap (x5)
• XH2.54 connector strip 4 pins
• Plastic case (100x60x25)
• D1-mini ESP8266 WiFi Module
• 1.3" OLED I2C Display
• 2.5mm Nylon washer (x4)
• 2.5x6mm screw and bolt (x4)

As a PCB baseplate I choose a widely available Arduino Mega2560 Prototype shield because it fits in a simple plastic case (see hardware list above) just right. You need to cut it at the bottom and make a couple of mounting holes.