Hi!
I require your help regarding a problem I’m encountering.
Description:
I bought two of these MQ-4 I2C Sensor Boards and I’m looking for schematics. The link on the product page for “I2Q MQ-4 Methane Natural Gas Sensor Mini Module Schematic” (a) is a screenshot of the layout, not the schematic, and (b) is not even the layout for an earlier revision of the board (I got Rev C, pdf is for Rev A).
So please can you provide actual schematics, for Rev C? I can almost certainly reverse engineer schematics and post them back here if you don’t have them. It looks like four capacitors, a potentiometer, two connectors, the ADC121 and the MQ-4 itself. But if you’ve already got the schematics and a willingness to share, you can save me some time?
Hardware concerned:
Software concerned:
N/A
Troubleshooting steps already taken:
Browsed website extensively.
Additional information:
Thank you so much in advance for your help!