- #1
NipunaG
- 11
- 0
hi everybody.
a friend of mine needs to make an ammonia sensor from the mq137 sensor, but we couldn't find a circuit anywhere. can any of you guys help us out? we need it to trigger a relay when a preset threshold is reached. thanks in advance!
a friend of mine needs to make an ammonia sensor from the mq137 sensor, but we couldn't find a circuit anywhere. can any of you guys help us out? we need it to trigger a relay when a preset threshold is reached. thanks in advance!