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Figaro TGS5042 Carbon Monoxide Sensor & Op Amp

sharathb last edited by sharathb

In data sheet they have mentioned IC name as AD708 to be used but they have different IC's under its name AD708AQ and AD708BH etc.
which one should i use and many have reported struggles with configuring TGS 5042 CO sensor to get correct measurement, so any suggestions about it,

This'll be the alternate measuring circuit i found on internet which says it prevents polarization as mentioned in data sheet, what is polarization of sensor??
which circuit should i be using?
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@NotYetRated Hope you'll find good uses and a fun time while building your sensors.
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We are of like minds, Don't like the cloud based controls (that's another discussion). In my case I have a Bryant/Connex system, heat pump, variable speed fan and 4 zones. There's a lot going on: the 4 zones creates 16 profiles. The fan speed for a profile will depend on the indoor and outdoor temperature. The thermal fluid pump also has to be controlled. A profile will have an optimal air pressure, so there's a sensor there. The controller works just fine not being connected to the cloud. But I want to set the parameters remotely, Bryant/Connex can do this. I also wnat the status of the various actuators and sensors to show up in Home Assistant. The signals sent over the RS422 are proprietary. My plan was to reverse-engineer the signals. After doing this I'll have to experiment to get the right mix of air pressue, fan speed and thermal fluid flow for each profile. I'd like to do the same for my AO Smith heat pump water heater. I'd like to follow your progress. OSD
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@DeepCore That is a need looking design. Did you consider using an alternative power supply other than usb? My Pi can't handle a lot of usb devices power wise, so I'm using a powered usb hub. But the wife doesn't like it, it's messy xd
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@Kokosnoot good solution. I remember the discussion in the early days of MySensors. I've powered the radio's for most of my sensors from the 3.3v regulator on the arduino board and for me that works perfect. But for my latest designs I decided to add a separate ams regulator for my radio's like the guys suggested in the beginning. Because you basically want the on board regulator to power the mcu only.
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Figaro TGS5042 Carbon Monoxide Sensor & Op Amp

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Announcements • • hek

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MySensors Serial Gateway with USB 2.0
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Figaro TGS5042 Carbon Monoxide Sensor & Op Amp

Suggested Topics

Welcome Announcements • • hek

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My Project • • Michael Link

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My Project • • DeepCore

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