Solar Charge Controller Raspberry Pi

Most solar panels in the market today are 9v.

Solar charge controller raspberry pi.

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. My victron solar charge controller and victron battery monitor are bluetooth only. More information below. These boards are designed with a lot of flexibility for you to innovate your design.

I used one of these usb to rs485 adapters. The more popular raspberry pi 4 s supply is recommended to be at 5v 2 2 5a current. 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. They might not reply or they might say no but you should try.

Better to use µw with a small microcontroller. A venus gx costs nearly 300 and a raspberry pi costs about 30. New solar panels on top of the project curacao box weatherrack in background. I think that a microcontroller is as is so often the case here a much better idea than using a pi.

Look up the ucn2906 lead acid charge controller ic. Or more accurately firmware that emulates their color control gx venus gx monitoring devices and it runs on a raspberry pi. The design is now mature and the high efficiency mppt solar charger is. 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.

The charge controller is sold by multiple vendors such as ep solar sainsonic renogy etc. The pi consumes 5w or so and that is a lot of power to be wasting on a solar charge controller. Custom system built for raspberry pi to visualize your solar installation and control it via mqtt. A few years ago lukas fässler needed a solar charge controller and made his own which he has been improving ever since.

In this video i just quickly. I was able to make the raspberry pi communicate with the charge controller using the pymodbus library and a cheap usb to rs485 adapter. However the pi zero needs only 1 1 5a so make sure to adjust accordingly. Buck regulator design isn t too difficult.

They re cheap and you can buy them anywhere. Connecting the solar panel to the pi zero.