What is it?

A 9 Valve sprinkler controller kit designed specifically to work with ESPHome. Comes with the Case, graphic overlay, and the PCB.

Why did you make it?

To replace an existing sprinkler controller which was not capable of working with ESPHome.

What makes it special?

• ESP32 Micro controller
• Uses a 40VA 24VAC wall transformer with an internal fuse.
• Operates the 24 Volt AC sprinkler valves commonly used for irrigation.
• 9 Independently controllable valve outputs.
• 1602 LCD display.
• 3 Front panel buttons.
• Real time clock.
• Individual triac valve drivers rated for 0.4A.
• Monitoring of the total valve current.
• Watchdog relay disconnects all valves if not serviced periodically by the firmware.
• Expansion connector for future valve expanders.
• ABS Plastic Enclosure and graphic overlay.

Included

• 1 ea. Main PCB and display
• 1 ea. Pre-drilled enclosure and front panel overlay with 4 retaining screws.
• 1 ea. 2 pin screw terminal pluggable power connector.
• 1 ea. 12 pin screw terminal pluggable power connector.

Not Included

• CR927 battery for the real time clock.
• 3.3V serial adapter for flashing firmware onto the board and connecting cable.
• 24V 40VA transformer
• Mounting wood screws
• Wire
• Additional wire connectors

Some Soldering Required

Because FCC certification is too expensive to undertake for a low volume device such as this, the product is shipped as a tested kit where the EN and BOOT pushbutton switches are supplied but not soldered onto the board. In order to program the device with your customized ESPHOME firmware, the EN and BOOT switches will need to be soldered to the board so that the ESP32 can be placed in upload mode.