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1  Using Arduino / Sensors / Re: INTERFACING NDIR CO2 MODULE WITH ARDUINO on: December 05, 2012, 08:28:03 am
Thank U Riva & DC42

what if I would just map the values? Pls inspect my assumption.

like this one,

 int sensorValue = analogRead(A0);
 int partspermillion = map(sensorValue, 205, 818, 0, 2000);

a support from telaire told me that 1V=205bits and 4V=818bits
since the sensors sensitivity is from 0-2000ppm

can this method be accurate?
2  Using Arduino / Sensors / Re: INTERFACING NDIR CO2 MODULE WITH ARDUINO on: December 02, 2012, 10:07:32 am
Yes sir, the sensor has a digital output. What exactly is the difference in measurements if I use the digital or analog? And how is it done?
The device seems to have analogue, serial and SPI interfaces. The data sheet says...
Quote
SPI/Microwire or UART @9600 baud
(Please call for detailed protocol specification)


Yes, its on the data sheet. I just don't know how to use it yet. I would like to know how accurate is the digital output than the analog.
3  Using Arduino / Programming Questions / Re: How to convert sensor readings to PPM? on: December 02, 2012, 09:46:02 am
No I dont have one. How is that formula youve given, translated into arduino code? Pls supply pseudo code sir.
4  Using Arduino / Sensors / Re: INTERFACING NDIR CO2 MODULE WITH ARDUINO on: December 02, 2012, 09:32:54 am

However, if your 5V supply (the default analog reference) is not very accurate then you will have a significant zero error. If the sensor has a digital output, it would be better to use that.

Yes sir, the sensor has a digital output. What exactly is the difference in measurements if I use the digital or analog? And how is it done?
5  Using Arduino / Sensors / Re: INTERFACING NDIR CO2 MODULE WITH ARDUINO on: December 01, 2012, 08:51:42 am
Thank u so much sir. How about if 0ppm is 1V and 2000ppm is 4V? how is that calculated?
6  Using Arduino / Programming Questions / How to convert sensor readings to PPM? on: November 30, 2012, 02:54:11 am
Hi guys! I have a CO2 sensor that has an analog output voltage of 0-4V which corresponds to 0-2000 PPM.
 
How can I display the Correct PPM units? Im getting around 1.15V as the lowest value? How can I get around 400PPM?

Pls help
7  Using Arduino / Sensors / Re: INTERFACING NDIR CO2 MODULE WITH ARDUINO on: November 30, 2012, 01:51:35 am
How can I calculate PPM. If my analog output voltage is 0-4V? and the sensitivity of the CO2 sensor is 0-2000PPM? Pls help!
8  Using Arduino / Interfacing w/ Software on the Computer / How do I configure Ethernet shield to be used in Cosm? on: November 26, 2012, 08:24:14 pm
I have seen the code from COsm. But dont know how to configure the IP and mac, what should I do? What part in the code should I edit?
Im using the Wiznet W5100 ethernet shield and arduino uno. I can seem to establish connection.

Pls help.

A step by step tutorial will do. Esp in editing the code provided. Im new with arduino ethernet and stuff. pls
9  Using Arduino / Networking, Protocols, and Devices / COSM ANALOG SENSOR DATA LOGGER/MONITORING SYSTEM USING GPRS on: November 20, 2012, 07:07:46 am
Can anyone find a related project? Im planning to make a monitoring system that uses GPRS in sending data to a graphing website like COSM. Pls help. I want to use a GSM module instead of a Ethernet shield.
10  Using Arduino / Networking, Protocols, and Devices / Analog Sensor on PACHUBE or COSM on: November 20, 2012, 07:02:40 am
Who is an expert on COSM? I want to know about how it works. If it only works with an Ethernet shield. I want to use GPRS module. SIM 900.
11  Using Arduino / Networking, Protocols, and Devices / COSM and GSM/GPRS MODULE on: November 20, 2012, 06:59:43 am
Is it possible to use a GSM MODULE, specifically a SIM900D GSM/GPRS, in sending data to Pachube, now named COSM?
12  Using Arduino / Sensors / Re: INTERFACING NDIR CO2 MODULE WITH ARDUINO on: November 06, 2012, 10:16:38 pm
Okay thank u sir.
13  Using Arduino / Sensors / INTERFACING NDIR CO2 MODULE WITH ARDUINO on: October 29, 2012, 07:58:38 pm
Good day everyone!
Has anyone tried interfacing an NDIR CO2 module to arduino?

I'm trying to use a Telaire T6004 CO2 module that I ordered from the net. I want to get analog values so that I could make a monitoring system. WHAT PINS SHOULD I USE? Is the method of getting values from this sensor similar with a simple voltage divider using potentiometer? Im new with arduino but I need to learn it quickly. I would be grateful if someone would help me in understanding the requirements in order to communicate this NDIR CO2 module with arduino. Attached is a product description of the module.

Also, i have seen a youtube video that was using the same sensor module, and it made me realize that it could really be possible, unfortunately, there was no clear description on how he was able to interface and code it with his arduino.

Here's the youtube link that I saw:
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