this kind of optic fiber is probably only plastic so for a full DIY , you can use also fishing wire with a big power led or an old chistmass tree optic fiber lighted.....
This should work with Domoticz, it's what I intend to use with it. I've received the boards from China and I'm currently working on a version 2 of this board. There are some errors in the design of version 1 that I need to get out. New version will be up shortly.
@mjdula
The 85 reading is actually an error message used by the ds18b20 to indicate it has not had time to complete the processing of the reading. Most commonly this is only seen when the node first boots up and can be ignored or fixed by adding a small delay. You will find a lot of information on this if you do a google search. I have never experienced it myself but from other posts on the net it seems power supply problems and long cable runs to the sensor can also cause the error. Some have also had success by using a different resistor value. Note you only need one resistor fitted near your nodemcu not a resistor at each ds18b20.
If the 85 reading is well outside your expected reading you could just filter out any readings over 84 as well.
I think the comment in the routine
void measureBattery() {
// R1 = 1MOhm, R2 = 220 kOhm
Should be
void measureBattery() {
// R3 = 1MOhm, R2 = 220 kOhm
(R3)
Is it possible to add (comment out) some lines how to calculate the battery percentage and send this via gw.sendBatteryLevel (batteryPcnt)
Great sketch!
Hey! This looks like a great project! I'm considering building one for my hives.
I notice that the legs need to be welded. That will be a chore for people that want to make this build themselves.
Is this version designed to be built by anyone?
Did you consider using open source or standardized hardware? Think of 2020 alu profiles or something, to allow reasonable buildability for users other than beep-base-shop.
Also let me know if I misjudged, and that all components could be simply bought online.
Stay awesome!
~ Bart