The original Ray Wang OpenSprinkler rel.2.1.6 has been ported to ESP8266 and to ESP32 and it is working with several tipe of DIY hardware configurations:
ESP32 and ESP8266 processors
Work with 24v valves , 9v latching valves and SmatSolenoid valves(ESP32 version)
Shift register or I2cExpander or Relay Board configurations for valve control
Display on 4*20 or 2*20 char LCD or Oled Graphic LCD(128*64)…new hw to come
Buttons on GPIO or I2cExpander or analog IO
Ethernet WiFi and Ethernet wired connections (ESP32 version only)
24v ac, 5v dc, LIPO battery as a power supply
A solar panel+ LIPO battery autonomous power supply
From January 2016 2.1.6 version to last ESP32 November 2017 release
January 2016
We started from a branch of OpenSprinkler 2.1.6 firmware for port of the code to an Arduino Mega with relay for valve control
July 2016
First release of Esp8266 OpenSprinkler code with the use of i2c expander modules and other HW components
September 2016
Added use of WiFi manager portal to select WiFi network access point and password.
March 2017
Added possibility to use of a graphic Oled LCD 128*64
April 2017
Added capability to drive 9v latching valves
May 2017
Release of a Solar battery powered OpenSprinkler to drive 9v valves (there is no need of any power connections)
August 2017
First release of a ESP32 OpenSprinkler firmware
January 2018
Capability to use Bluetooth peripherals
March 2018
Esp32 OpenSprinkler to drive SmartSolenoid valves
