OpenSprinklette


So, just got delivery of my 5 WeMOS uno clones …

 

arduino killer

… and 5 …

5v 4 Channel Relay Shield Module For Arduino

… we are now ready for OpenSprinklette!  All up AUS$11.00.  Only four channels but add a second unit for sum total of AUS$22.00!

So, a little work as we need to convert the 12volt AC to DC, should work a treat as the WeMOS board is happy to take 9-24V and also provides the 5V the relay board needs (apparently the 3.3V outputs should be okay *whimper*).

Now, since the “leak” (and the $3K water bill for the quarter) I will fit flow sensors to ensure flow is within expected range – so the unit can raise alarms.  Got 4 from Aliexpress for US$12 (or US$3 per sensor) which is better than the AUS$15 per sensor LittleBird is pinging people for similar devices.  Just needs a 3.3V zener and a 220 ohm resistor to adapt the 5V output of the sensor to the 3.3V inputs on the WeMOS.  Will build that onto a protoshield. (Anyone know what the connector type is from the photo below?)

flow

The NodeMCU provides NTP so I can run timers on WeMOS.  MQTT to the ODROID-W server (in the house) to pick up the watering times, weather off internet to decide upon whether or not to water etc.

A second two will be used for remote control of back and front yard lighting.  So remote ON/OFF and IR triggered to boot.

 

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2 Responses to “OpenSprinklette”

  1. Garrett Says:

    Will you be sharing your code?

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