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Using Grove pi + sensors

Sat Aug 01, 2015 6:22 pm

Dear all

I am looking for support . My son is building a project to detect benzene gas using a sensor and integrating it with a Raspberry pi2. He has located a HCHO sensor from a website which markets a product called Grove + which claims to be the interface between Raspberry pi and world of sensors. Please check this weblink http://www.seeedstudio.com/depot/GrovePi-p-2241.html

He is trying to buy a HCHO sensor as well from this website .http://www.seeedstudio.com/depot/grove- ... -1593.html .
However, I am not sure whether the grove pi and seeedstudio is trustworthy and whether I could proceed to buy this product from China or is there any local UK product or alternative way which can meet the needs of my sons project.

Thanks for your help

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Re: Using Grove pi + sensors

Mon Aug 10, 2015 4:45 am

Hey Jarun,

I'm John, and I founded Dexter Industries. The GrovePi+ (http://grovepi.com) is our design and we work with Seeed to support it with extensive software libraries (https://github.com/DexterInd/GrovePi/) and to keep the design up to date.

You can purchase this through Seeed, and you can also purchase the GrovePi+ through the Dexter Industries website (http://www.dexterindustries.com/shop/grovepi-board/) and Amazon (where the GrovePi+ and the Starter Kit have great ratings by real customers) (http://www.amazon.com/gp/product/B00WHR ... UQEFQV75LU).

We offer a lot of support through our forums (http://www.dexterindustries.com/forum/grovepi/), and we work through any issues you might have with the GrovePi+.

If I can answer any other questions, please fire away!


John Cole
Dexter Industries

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Re: Using Grove pi + sensors

Mon Aug 10, 2015 12:57 pm

I am as sure as you can be that they are trustworthy. They won't last long if they aren't.

You pays your money, you makes your choice.

You can buy a MQ-135 sensor for a few pounds and then an ADC (Analogue to Digital Converter) for a few more to read the sensor. That's all you need apart from a few wires, resistors, and something on which to mount the components.

It really depends on the point of the project as to which solution is better.

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Re: Using Grove pi + sensors

Mon Aug 10, 2015 2:01 pm

I've purchased products (Logic Sniffer, FPGA boards) from SeeedStudio several times, and everything was fine.
http://Mikronauts.com - home of EZasPi, RoboPi, Pi Rtc Dio and Pi Jumper @Mikronauts on Twitter
Advanced Robotics, I/O expansion and prototyping boards for the Raspberry Pi

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Re: Using Grove pi + sensors

Tue Apr 24, 2018 12:54 pm


I have Nemoto HCHO electrochemical sensor. I want to test this sensor by electronic circuit. I was testing this sensor by using electronic circuit in the datasheet. The problem was the output voltage is didn't varied linearly.

If anyone tested this circuit. Please give me any solution or you are faced any difficulties in the circuit.


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