# Liquid level sensor **URL:** \ **Category:** General\ **Created:** [May 22, 2017, 5:11pm UTC](https://community.particle.io/t/liquid-level-sensor/33064 "2017-05-22T17:11:53Z")\ **Posts on this page:** 1\ **Showing post:** 8
**Author:** ![nrobinson2000](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/nrobinson2000/32/15624_2.png) [@nrobinson2000](https://community.particle.io/u/nrobinson2000)\ **Post date:** [May 22, 2017, 5:59pm UTC](https://community.particle.io/t/liquid-level-sensor/33064/8 "2017-05-22T17:59:07Z")
> [@jonmlewis](#): > > are you familiar with monitoring voltage from a 12V battery with a photon? Not really, and you should keep that discussion on your other post. > [@Monitoring charge state of a 12V battery](https://community.particle.io/t/monitoring-charge-state-of-a-12v-battery/33062): > > In my project I am using a solar panel to charge a 12V battery to power a small pump and then to a 5V usb converter to power the photon. One of the variables I want to keep track of is the state of the battery, so that it does not get too low. I’m waking the photon twice a day to run the other sensors I have and perform the tasks i need and I want to see the voltage of the battery after each of these wakeups. I have already tried creating a voltage divider to drop it down to a safe 3-3.3V into a… --- _[View the full topic](https://community.particle.io/t/liquid-level-sensor/33064)._