Hi, I'm making an environment logger (temperature and humidity) that I hope to use to log data every 5 minutes to an SD card. Once every few hours it will also send an SMS with a summary of the previous hours data. I've worked with SD cards, temperature modules and SMS modules before so I'm pretty…

Environment logger and power saving

Grumpy_Mike October 9, 2016, 9:50pm 2

i.e. removing the power-hungry components.

What components are these?