I am looking at the feasibility of doing a solar charger for a battery unit for a remote sensor suite (primarily weather and some Raspberry pi units). I came up with the attached diagram. So far I have a battery disconnect for safety, along with a switch to disconnect from the power output, and another internal switch to disconnect the Arduino. I have been looking at adding a PV Disconnect as well but cant find any for a 17V, 1.47A panel.
This image is missing a Ethernet shield on the MKR GSM 1400 Arduino, which receives the data from the other sensors in the other unit (listed below). I am planning on having a power cable connecting the two boxes, so if I use the “Sensor box” else where I can just power it off of 12V DC from a wall wart.
MKR GSM 1400
MKR Ethernet Shield
Uno Ethernet Shield
Two RTL SDR’s
12V RG-11 by Hydreon
SHT-30 Temp/Humidity Sensor
Davis Anemometer/ Vane
I was looking at a 25W PV panel, with a 12V 10-15 amp hour battery for reference.
Thank you for any feedback! Just looking to have some feedback on the design/feasibility before investing in some components.