Did you power the sensor with 5V?
With 3.3V its not going to work.
You need as well a voltage divider to get output down to 3.3V
https://www.olimex.com/Products/Compone ... -MQ135.pdf
Search found 39 matches
- 24 Oct 2018 15:56
- Forum: Z-Uno
- Topic: MQ135 air quality
- Replies: 2
- Views: 3476
- 26 Sep 2018 10:08
- Forum: Z-Uno
- Topic: EEPROM lifespan?
- Replies: 3
- Views: 3818
Re: EEPROM lifespan?
The water meter only writes if there are updated values.
Personally I don't think water flows for more then an hour a day. So take the 5 months times 24.
Personally I don't think water flows for more then an hour a day. So take the 5 months times 24.
- 04 Jul 2018 17:55
- Forum: Z-Uno
- Topic: HC-SR04 and DS18B20 help?
- Replies: 25
- Views: 23550
Re: HC-SR04 and DS18B20 help?
Doesn't matter where in the loop you put it, as long the value is calculated before the send report.
The above example will just work fine.
The above example will just work fine.
- 04 Jul 2018 11:09
- Forum: Z-Uno
- Topic: HC-SR04 and DS18B20 help?
- Replies: 25
- Views: 23550
Re: HC-SR04 and DS18B20 help?
Your just updating the temperature sensors in code:
zunoSendReport(i + 1)
and zunoSendReport(1);
You need to add:
zunoSendReport(3);
zunoSendReport(i + 1)
and zunoSendReport(1);
You need to add:
zunoSendReport(3);
- 19 Jun 2018 19:20
- Forum: Z-Uno
- Topic: HC-SR04 and DS18B20 help?
- Replies: 25
- Views: 23550
Re: HC-SR04 and DS18B20 help?
You didn't put in:
zunoSendReport(1);
zunoSendReport(1);
- 17 May 2018 10:20
- Forum: Z-Uno
- Topic: Z-Uno to readout wallswitches and send state to domoticz
- Replies: 5
- Views: 5119
Re: Z-Uno to readout wallswitches and send state to domoticz
With version 2.1.1 32 channels have been introduced:
https://z-uno.z-wave.me/news/2017/11/ne ... lease-211/
https://z-uno.z-wave.me/news/2017/11/ne ... lease-211/
- 02 May 2018 06:56
- Forum: Z-Uno
- Topic: Z-UNO based weather Station (German description)
- Replies: 8
- Views: 7949
Re: Z-UNO based weather Station (German description)
Thanks for your testing. HC2 indeed seems to have issues with values >32k. Initially I used long, 32k was limitation as well, but from time to time a neighbouring channel showed spikes of 32k. Could be when value got over 64k. For the time being I will devide the result by 4 and apply correction on ...
- 01 May 2018 12:50
- Forum: Z-Uno
- Topic: Z-UNO based weather Station (German description)
- Replies: 8
- Views: 7949
Re: Z-UNO based weather Station (German description)
Peter,
thanks, going to give it a try.
thanks, going to give it a try.
- 30 Apr 2018 10:34
- Forum: Z-Uno
- Topic: Z-UNO based weather Station (German description)
- Replies: 8
- Views: 7949
Re: Z-UNO based weather Station (German description)
better comented arduino code: //PIN18-rain (3V3-2K2-PIN18-100nF-GND) //PIN4 ADC1 //PIN9-SCL (2K2 pullup to 3V3) //PIN10-SDA (2K2 pullup to 3V3) //GND-Ground //3V3-3Volts</pre> //WIND RJ11: //* //2-3V3(Yellow) //3-PIN4-Winddirection(Green) //4-GND(Red) //5-PIN17-Windspeed(Black) //* //RAIN RJ11: //* ...
- 27 Apr 2018 08:45
- Forum: Z-Uno
- Topic: Z-UNO based weather Station (German description)
- Replies: 8
- Views: 7949
Re: Z-UNO based weather Station (German description)
Polto, sure it is fine if post it on your web site. Actually that is not my blog, just wrote a guest report. The Z-UNO code is poorly commented at the moment, I can add some comments to explain a bit better the logic used. If you need any support let me know. One challeng I have is the BH1750 only g...