So, just got delivery of my 5 WeMOS uno clones …
… and 5 …
… 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?)
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.
This entry was posted on June 29, 2016 at 12:59 pm and is filed under Embedded, ESP8266, IOT, Lua, MQTT, Networking. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.