Radon RD200M Sensor and Arduino

Other Hardware Sensors
1

I need help. I'm just starting my adventure with Arduino and electronics. I need to complete a specific project related to connecting the RD200M radon sensor to Arduino.

I found such a diagram in the manufacturer's documentation (see page 1):

I wanted to ask what exactly the adapter board between Arduino and RD200M is. Please provide the specific name and number of the board - if it is a commercially available item.

I am not an electronics expert and I would be grateful for information + a diagram on how to connect the RD200M sensor to Arduino.

If there was no "special" adapter board, would the connection:

  • RD200M Pin 4 to GND Arduino
  • RD200M Pin 3 (red) <---> 5V to 12V step-up board <---> Arduino 5V output port**
  • RX200M Pin 2 (yellow) to one selected Arduino input port (e.g. port 1)
  • PD200M Pin 1 (green) to one other selected Arduino input port (e.g. port 2)

Will be correct and will cooperate with code (sketch) listed in manufacturer's instruction?
Will the Arduino be damaged when connected in this way - a large current will not flow through it (increasing the voltage from 5V to 12 V in the step-up board seems to require a higher current)

2

You need to know the specs for the RD200M sensor in order to figure this out.

It seems from the PDF that the board is a 5VDC to 12VDC step up device. The manufacturer shows it being powered from the 5V pin of an UNO which would suggest that the RD200M doesn't draw much current.

What's not clear is what voltage levels are on the RX & TX lines coming out of the sensor. It could be RS-232 or it could be 5V. You would need to know what that little board is (or is not) doing to the RX & TX signals.

I did find this PDF: http://radonftlab.com/wp-content/uploads/2015/data_sheet/datasheet_RD200_v1.4_eng.pdf

That indicates that:

Power : DC 12 ± 0.1V, 65mA (12V DC adapter)

and

Data communication : Bluetooth LE (Android/iOS)
UART (RD200M)

3

The piece used is literally called "UART to RD200M Board" and it's also from Radon FTLAB. However, I googled around a bit and was unable to find where you can buy it separately. You can see the backside of it on one of the pictures in this pdf IEEE Xplore Full-Text PDF: