Hello everybody,
I have a few mobile battery powered Ardruinos to measure the temperature. These are powered by 3 AA batteries. But always one of the three batteries is deeply discharged (0V!). To avoid this in the future, I wanted to ask if someone knows a simple circuit that prevents this? If it is possible, this circuit should not require much power.
Hope I am here in the right area of the forum 
Hello together,
I'm just trying to get the voltage measurement to work. But there is something wrong. I built everything as shown above and uploaded the program to the Arduino pro mini. The only thing I changed is the sensing Pin A0 -> A3
In debug mode I see the following (the supply voltage is constant 3.3V):
Battery Voltage: 3.12 V
Battery percent: 92 %
Battery Voltage: 2.40 V
Battery percent: 71 %
Battery Voltage: 2.32 V
Battery percent: 69 %
Battery Voltage: 2.31 V
Battery percent: 68 %
Battery Voltage: 2.29 V
Battery percent: 68 %
Battery Voltage: 2.30 V
Battery percent: 68 %
Battery Voltage: 2.33 V
Battery percent: 69 %
What could be the reason? That doesn't make sense to me.
hey @tbowmo
I found my mistake in /home/openhabian/.npm/_logs
I had to use sudo ....
But I have another Question. Do I need an Arduino in-between or can I connect the modul directly to the Raspberry pi like it is done here.
Thank you very much for your help!!
Hey @rozpruwacz
there is no binding for mysensor in openhab 2.3 available at the moment (my 3. post). Or am I wrong?
Sorry can you please give me a smal step by step introduction? Where do i have to install what?
Thanks. But the installation does not work. Firstly, I installed Node-Red and then the npm. Afterwards I tried to install node-red-contrib-mysensors.
Hi,
great work. I tried to install it, without success. First I installed node-red und npm. As operation system I use openHABian v1.4.1.
This is the output:
npm install node-red-contrib-mysensors
(node:4359) [DEP0022] DeprecationWarning: os.tmpDir() is deprecated. Use os.tmpdir() instead.
npm WARN package.json node-red-project@0.0.1 No repository field.
npm WARN package.json node-red-project@0.0.1 No README data
npm WARN package.json node-red-project@0.0.1 No license field.
npm WARN package.json copy-descriptor@0.1.1 No README data
npm WARN package.json log-ok@0.1.1 No README data
npm WARN package.json log-utils@0.2.1 No README data
npm WARN package.json object-copy@0.1.0 No README data
npm WARN package.json static-extend@0.1.2 No README data
npm WARN package.json ansi-wrap@0.1.0 license should be a valid SPDX license expression
npm WARN package.json events@1.1.1 events is also the name of a node core module.
npm WARN package.json format@0.2.2 No license field.
npm WARN package.json jsonify@0.0.0 license should be a valid SPDX license expression
npm WARN package.json string_decoder@1.1.1 string_decoder is also the name of a node core module.
npm ERR! Error: Method Not Allowed
npm ERR! at errorResponse (/usr/share/npm/lib/cache/add-named.js:260:10)
npm ERR! at /usr/share/npm/lib/cache/add-named.js:203:12
npm ERR! at saved (/usr/share/npm/node_modules/npm-registry-client/lib/get.js:167:7)
npm ERR! at FSReqWrap.oncomplete (fs.js:135:15)
npm ERR! If you need help, you may report this *entire* log,
npm ERR! including the npm and node versions, at:
npm ERR! <http://github.com/npm/npm/issues>
npm ERR! System Linux 4.14.52+
npm ERR! command "/usr/bin/node" "/usr/bin/npm" "install" "node-red-contrib-mysensors"
npm ERR! cwd /home/openhabian/.node-red
npm ERR! node -v v8.11.1
npm ERR! npm -v 1.4.21
npm ERR! code E405
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR! /home/openhabian/.node-red/npm-debug.log
npm ERR! not ok code 0
Hey,
I am a little bit helpless. I installed Openhab 2.3 and there is no Binding for mySensors. After some research I found out, that this Binding is still in progress.
There is still another possibility by using the W5100 MQTT gateway. Do I have to use a ESP or Arduino for this? I connected the RFM69 modul directly to the raspberry pi to avoid this aditional step. How can I use the MQTT Gateway?