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eriove avatar image

Connecting BMV-712 and BlueSolar MPPT 75/15 via VE.Direct?

We have a BMV-712 and want to buy a MPPT charger. Would it be possible to but a BlueSolar MPPT 75/15 (SCC010015050R) and connect it with a cable (VE.Direct) to the BMV-712 and get data from both of them in the app, or do we have to buy a Bluetooth dongle or a SmartSolar for that to work?

MPPT - Solar Charge ControllerBMV Battery MonitorBluetoothVE.Direct
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5 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

A very similar question we had here a few weeks ago.

No that will not work. The VE.direct port is only to connect the BT-dongle or to connect the device to a venus device.

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hotwaterjoe avatar image
hotwaterjoe answered ·

I'm new so bare with me.

I was thinking that the BMV-712 could send battery voltage and temperature readings to the BlueSolar MPPT controller if the BMV-712 had the optional temp probe.

I thought the data was sent to the BlueSolar via the VE-Network over BlueTooth provided both devices are on the same VE-Network.

Do I misunderstand?


Bill

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@HotWaterJoe, this question is referring to the BlueSolar model MPPT (without Bluetooth), not the SmartSolar model which has Bluetooth. If you have a SmartSolar MPPT on the same VE.Smart network as a BMV-712 with a temperature sensor, then yes the BMV will share the temperature data with the Smart MPPT. It is not possible to hardwire-connect a BlueSolar MPPT to a BMV using a VE.Direct cable and achieve data sharing, which is what the OP was inquiring about.

Epicycler avatar image
Epicycler answered ·

I use an Arduino to read BMV and send to MPPT

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Could you explain how you did it?

More specifically, how were you able to "upload" the BMV data to the MPPT via VE.Direct (does the Arduino "emulate" the Smart Bluetooth dongle for the MTTP)?

Epicycler avatar image
Epicycler answered ·

Hi Greg,

I used the VE-Direct Hex Protocol for both BMV and MPPT

https://www.victronenergy.com/support-and-downloads/whitepapers

Read from BMV, send to MPPT.

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panmanjon avatar image
panmanjon answered ·

I was able to do this using a raspberry pi - I had 2 mppt solar chargers, 1 bmv 712, a gps, 2 3rd party chargers. I used the v.direct leads with usb at the other end into a usb hub and into raspberry pi - I used a node-red flow design and was able to read in data from all devices, do some simple logic and even some commands back to the devices.

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