Inquiry about EVKITSWF-20 CO2 sensor kit connector port

Embedded Development Boards, Kits, Programmers
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1

Hello,

I am looking for the CO2 sensor on your website and the EVKITSWF-20 EVKITSWF-20 Gas Sensing Solutions Ltd | Development Boards, Kits, Programmers | DigiKey meet my requirements.
However, I am wondering about the connector between the sensor with the computer. I can see the USB cable has one end connects to the computer, the other end connects to the sensor, but I cannot see the port is suitable with the sensor board. Can you explain for me that? Or maybe I get confusing because I am seeing not in the right angle? I attached the picture below for my question.

I am looking forward for your reply. Thank you for helping me!

Have a nice day!

image EVIKITSWF-20 CO2 sensor kit_Digikey
image EVIKITSWF-20 CO2 sensor kit_Digikey958×964 87.2 KB

2

Hello,

From what I can see it does not have a right angle. Just straight.

3

Hi Karl,

So can I have the confirmation that the provided cable fit the CO2 sensor board port?

4

Looks like the provided cable is a simple FTDI cable. It’s purpose is to interface with the UART pins and provide power/ground. The SprintIR-W datasheet (page 7) indicates these are pins 1, 3, 5, and 7 on the board’s connector.

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image770×342 12.8 KB

After connecting the cable to the sensor board, the result should look similar to the following (taken from the evaluation kit user guide):

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Notice that only a subset of the pins are being utilized. So to answer your question, yes, the provided cable will fit the board connector.

5

Hi Matt,

My purpose purchasing the SprintIR-W sensor is to measure CO2 concentration. As you say, the cable just only connects with pins 1, 3, 5, 7. So can I still measure the CO2 concentration without connecting to the other pins, especially 8, 9, 10?

6

If I’m understanding the datasheet correctly:

  • A pulse on pin 8 (NITROGEN_ZERO) is equivalent to issuing the U command over the UART interface
  • Pin 9 (ANALOGUE_OUTPUT) is optional. CO2 levels can be read over the UART interface in different ways depending of the operating mode.
  • A pulse on pin 10 (FRESH_AIR_ZERO) is equivalent to issuing the G command over the UART interface

So, yes. The full capabilities of the sensor should be available to you using only the UART pins.

7

Hi Matt,

If I understand correctly, I can use the U command to zero nitrogen or G command to zero fresh air concentration. So does the software support this sensor board?

I attach the image taken from the user guide for the evaluation kit.

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8

Yes. In fact, the USB stick that is included with the dev kit should include the software installation files.