What is it?

This is a RS232 to WiFi bridge, which connects to your Renogy charge controller (and even other branded ones) via RJ12 using RS232 and makes the data of it available over WiFi. You can look at the current data through the Web interface (also supported in AccessPoint mode), let RNGBridge upload it automatically to PVOutput or send it to your local MQTT Broker. You can even mix and match as you like, meaning that the Web interface will always be available, updates the data every second and you can individually enable MQTT or PVOutput. But wait there is more! You can not only control the load output of your charge controller through the web interface, but also let RNGBridge automatically control it with user defined set points. If that is still not enough for you, you can get the optional output components (with terminal blocks) and for example let RNGBridge control an inverter with individual user defined set points for each output. You can find a list of all supported and tested devices here.

Features

• Beautiful web interface
  • Control Load, Out1, Out2 and Out3 remotely
  • Get more information about system errors by hovering over them
  • Battery capacity intuitively visualized
• Over the air software updates (OTA)
  • Displays a banner with download link when a new update is available
  • Keeps configuration after update
• Optional data publishing to MQTT
  • Works with protected Brokers (username, password)
  • Configurable topic, client id, port and ip
  • Configurable update interval
• Optional data publishing to PVOutput
  • Configurable time offset
• Automatic Load, Out1, Out2 and Out3 control
  • lower/upper setpoint
  • can be inverted
  • control depending on battery SOC(state of charge), battery voltage, panel voltage or panel current
• Control Load, Out1, Out2 and Out3 through REST api

Why did you make it?

I wanted an easy and simple way to be able to monitor and control my Renogy charge controller remotely as well as having its data sent to my home automation system over MQTT and uploaded to PVOutput. That way I can always check up on my system even on vacation.

What's included?

• 1x RNGBridge PCB (with soldered SMD components)
• 1x MAX232 RS232 IC (SMD)
• 5x Capacitor (SMD)
• 7x Resistors (SMD)
• 4x LEDs (SMD)
• 1x RJ12 connector
• 1x Socket strips (for connecting Buck-Converter)
• 3x Terminal blocks
• 3x Terminal block recepticles
• 3x Transistors

Optional

• 1x ESP8266 D1 Mini (including socket strips & headers)
• 1x Buck-Converter (fixed 3.3V)
• 1x 3D-printed case

What's not included?

• RJ45 cables, those are better sourced locally

Disclaimer

Renogy and all other trademarks are the property of their respective owners. This device is a DIY project and is not officially endorsed by Renogy or others.