ESP-Solar_OpenDTU

PCB for OpenDTU in Cable Branchbox, LineSupply w. Fuses, RS485/RS232-Olimex, Relais, DS2485 OneWire, I2C-Header...

Mechanically fits into quite compact HNS 989861-H01 wiring box (form closure only). If not all features are used, even edged Wieland-Socket should fit. LEDs need LightGuides: no. position-drawing and not included in material list

Tradeoff: Very limited space, copyrighted code for ds2485

image::ESP-SolarV1.jpg

• WESP32-WROOM-based (internal or external antenna)

• 5x20 Fuseholder (Supply)

• Varistor

• HiLink Supplymodule f.e. 230V->3.3V

• 5x20 Fuseholder (Relais)

• Relais SANYOU 10A

• modern 1Wire-Controler DS2485

• programming Header (Shelly-Pinout)

• I2C+VCC+GND header

• 2x5 Ribbon Connector for Olimex' RS485/RS232-Modules

• LEDs (green: power, red:active, or:DS2485 GPIO)

• TTL serial connector f.e. for IR-Energy reading

• robust cage clamps for external connections

The board was done for differend scenarios including HoymilesDTU, using different RF-Modules, reading the new IR-Energy counters with "Volkszähler", measure distributed temerature locations with OneWire-Sensors and control of pool pump or heating elements, maybe some IR motion detection in the garage, interfacing RS485/Modbus/RS232 for Solar-Inverters etc. - CAN- and metering bus are missing, though.

Would be great to hear how you used it or modified it for!