Solar Charge Controller Raspberry Pi

Buck regulator design isn t too difficult.

Solar charge controller raspberry pi.

The pi consumes 5w or so and that is a lot of power to be wasting on a solar charge controller. A few years ago lukas fässler needed a solar charge controller and made his own which he has been improving ever since. I chose an old raspberry pi model a because it doesn t consume very much electricity and although it s under powered it can easily handle the 2 tasks of serial communication and web serving. The more popular raspberry pi 4 s supply is recommended to be at 5v 2 2 5a current.

The charge controller is sold by multiple vendors such as ep solar sainsonic renogy etc. They might not reply or they might say no but you should try. Another thing you can do when you get another pi is to try a usb ttl serial adapter. The epsolar tracer2210a charge controller including their bn range has an rj45 port which can be used to connect an optional monitor or to windows monitoring software.

Most solar panels in the market today are 9v. A venus gx costs nearly 300 and a raspberry pi costs about 30. Custom system built for raspberry pi to visualize your solar installation and control it via mqtt. I still think you should email the manufacturer of the solar charge controller to be sure you have the correct pinout of the 8 pin rj45 socket and the specification for the output voltage.

I was able to make the raspberry pi communicate with the charge controller using the pymodbus library and a cheap usb to rs485 adapter. Look up the ucn2906 lead acid charge controller ic. New solar panels on top of the project curacao box weatherrack in background. This tutorial demonstrates how to use serial communication on a raspberry pi to connect to a solar charge controller and transmit the data using a python web.

This is the ultimate solar panel controller for raspberry pi and arduino projects. In this video i just quickly. More information below. They re cheap and you can buy them anywhere.

The design is now mature and the high efficiency mppt solar charger is. Connecting the solar panel to the pi zero. I used one of these usb to rs485 adapters. Better to use µw with a small microcontroller.

My victron solar charge controller and victron battery monitor are bluetooth only. I think that a microcontroller is as is so often the case here a much better idea than using a pi.