Even with the 0.1uF capacitor, I had wrong values.
So, I've gone with the voltage divider method, and it seems more reliable, at least for my case.
4.7V max to VCC, R1 1M, R2 330k, another 0.1uF capacitor in parallel with R2.
I don't need a very good accuracy, just a trend in order to know when to change my batteries.
Thanks for your help.
@Nca78 said in Particle Powered Air Quality Sensor Logging to Google Docs:
@Sebex said in Particle Powered Air Quality Sensor Logging to Google Docs:
Perhaps I don't necessarily need to use the same pins
Both the sensors you quote are using I2C. So they both use the same 2 pins (SDA, SCL) to communicate. You can put many I2C sensors on those same pins, they each have an address to know which sensor is receiving/sending data to the master (here, your arduino).
Look for a tutorial on I2C first.
Thanks I get it now
@canossa Sorry for the late response.
yeah, since is so compact and you can get it for relatively cheap I opted in for the NRF52.
For home automation, I merged MySensors with Domoticz and it works for months now.
https://forum.mysensors.org/topic/7836/what-did-you-build-today-pictures/738
Hi!
I have the same problem as terxw. allpcb.com is missing the "NC drill date". Unfortunately I am not able to create this on my own. Can anybody upload this file?
Thanks
