I recently bought a MQ7 sensor module like the one in the attached picture. I have read several tutorials, and they're all different. Some of them says that i need to connect the module directly to 5v and wait 24 hours to made it work properly, others says that i need to program different periods (5v and 1.4v) and wait the same time to make correct meditions. I read this Datasheet, but i think that the information it has is not for the module.
If anyone knows how to setup this module i will aprecciate an answer (i want to read analog values).
Thanks in advance and sorry for my bad english.