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| Pablo | Posted: 14 Apr 2021, 07:30 AM |
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 Member Posts: 2 Joined: 9-April 21 |
Thank you very much!! ------------- |
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| y3b0y | Posted: 10 Mar 2025, 12:47 AM |
 Member Posts: 1 Joined: 10-March 25 |
Hi, I know this is an old thread, but first of all I want to thank you for all the information you have uploaded and for sharing your knowledge <3. I have a few questions regarding the construction of the Breath Controller. What other components should I change, besides the op-amp, if instead of using the MPXV4006DP I use the MPXM2010GS, which works between 10 V and 16 V? Should I also change the value of the resistors? Which op-amp would you recommend me to use? Greetings from Chile :-) Last edit by y3b0y at 10 Mar 2025, 12:47 AM ------------- |
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| mit | Posted: 17 Mar 2025, 11:34 AM |
 yeah whatever Admin Posts: 670 Joined: 4-May 16 |
QUOTE (y3b0y)
Looks like that chip has a differential output and no internal gain stage, so you'd need a different circuit to support it. Easiest to look for a part with an internal amplifier.Hi, I know this is an old thread, but first of all I want to thank you for all the information you have uploaded and for sharing your knowledge <3. ------------- |
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| kekostar | Posted: 17 Apr 2026, 09:21 AM |
 Member Posts: 1 Joined: 17-April 26 |
Hi, thanks for your project. I've recently been working on my controller with the same pressure sensor and am having trouble connecting the pins. The datasheet has a strange pin definition. There are two options: with Vout+, Vout-, and Vout only. If I understand correctly, you used style 2, but you mentioned the possibility of controlling via suction. With the same connection? This might be a silly question, but are these styles are sensor connection options or it is a pin configuration specific to the sensor? I would be very grateful for an answer ------------- |
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| mit | Posted: 18 Apr 2026, 10:06 AM |
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yeah whatever Admin Posts: 670 Joined: 4-May 16 |
QUOTE (kekostar)
There are two style of input (air pipe connections). A single pipe is gauge pressure, two pipes is differential pressure.Hi, thanks for your project. There are also two styles of output (voltages), single-ended or differential. Single-ended is easier to work with. You need to look closely at the part numbers in the datasheet, often they'll have one datasheet for several parts with slightly different names. Depending on how you wire it up, any permutation of the options could be used for control via suction if you wanted. The way I wired it up, sucking would send the voltage below zero, so the output would just stay zero, however, since it's a differential sensor, connecting to the other pipe would mean that sucking would send the voltage the other way. Hope that explains it! ------------- |
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