Irrigation Hunter X-Core remote control using REM pin

I got both. Installed OpenSprinkler on a wemos and command with it the hunter.

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Indeed, this worked also for me. Thank you!

Hey mate, do you know where I can find the complete idiots guide to this project? Its something id like to try but Im not sure where to start.

EG: wiring and how to compile and upload to the ESP

Hi,
I wrote no code, the opensprinkler port was made by seb821, I just adapted it to my needs.
The main differences are Wemos pin configuratio adapted to my already wired MCU (I previousy used ecodina’s FW to expose REST API) and NTP update every 30 mins (this to solve the losing of the current time in case of power failures, lack of RTC and my dad that frequently disconnected the Hunter to manually using the well pump)

Device Used: Wemos D1 mini
Wiring: as depicted in this picture:

GND to one of the 24VAC terminals, GPIO16 (D0 pin for Wemos D1 Mini) to REM terminal of the Hunter.

FW: I used a linux laptop and used these commands

sudo chmod 666 /dev/ttyUSB0   #because I'm lazy and struggled to solve permission problems on my laptop
esptool.py --port /dev/ttyUSB0 erase_flash
pio run -v  -t upload 

Then wire it as described and power it up via USB. The Wemos should start his own AP for initial configuration.
The Opensprinkler FW is a little old but it works for me. It has API for HA integration, rain forecast from OS and web interface for programming.
The Hunter has been set to OFF all the summer this year, but I chose to keep it as it is because, if needed, I could simply turn the knob to do one off programs.

Thanks for the quick reply. So a couple of dumb questions.

  1. What file do I use to flash the ESP?
  2. Can I use a buck converter to power the ESP?
    Amazon.com
  1. published a release on the repo with my binary, if you trust me.
    https://github.com/wrongisthenewright/OpenSprinkler-Firmware-Hunter/releases/download/v1.0/firmware.bin
  2. no idea, I’m an IT guy not an electrician :slight_smile:
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