With the recent surge in Omicron cases, shipping may be slower than stated times. We are working to build, ship and respond to everything as quickly as possible. Please see all COVID-19 updates here. Thank you for your continued support.

Member #898076

Member Since: February 1, 2017

Country: United States

  • I made a set of experiments using this sensor and wrote an instructable with schematics, code and calibration procedure that can be, with some complications, performed at home: https://www.instructables.com/id/Arduino-CO-Monitor-Using-MQ-7-Sensor/ . Code is relatively complicated since we need to drive transistor with PWM in order to create 1.4V on the sensor - we must use 5V / 1.4V cycles for heating and measuring data. But my results are quite similar to manufacturer's datasheet, so I believe I did it mostly right

No public wish lists :(