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arendst / Tasmota

Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
https://tasmota.github.io/docs
GNU General Public License v3.0
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Simple EVSE-WB / EVSE-DIN with Modbus RS485 #5609

Closed roesl closed 5 years ago

roesl commented 5 years ago

Hi, I want to control my EVSE-DIN which has Modbus protocol with Sonoff Tasmota ( MQTT) to set charging current or read the status of the device, so I could also use several Inputs or outputs of the tasmota device too. Because there are also modules for IP-Symcon and other Smarthome applications available it would be easy to charge vehicles with solar power.

Jason2866 commented 5 years ago

What is your question?

roesl commented 5 years ago

I want to control the evse-din with modbus rs485 so I need a device for tasmota to do this

Jason2866 commented 5 years ago

Modbus Protocol isnt supported from Tasmota. You can connect Modbus hardware as described here https://github.com/arendst/Sonoff-Tasmota/issues/3694#issuecomment-424743666 You have to connect it via hardware serial bridge function. So you will get all traffic via mqtt

roesl commented 5 years ago

there is the SDM630 Energy meter ( this has Modbus protocol) as device in tasmota so I think it would be also possible to add the device EVSE-DIN

Jason2866 commented 5 years ago

There is a specific driver made for this device. This would be needed for the device you want too. There is no general solution...

roesl commented 5 years ago

is anybody able to make a driver for the EVSE - I think there are many people interested because they will drive Electric vehicles in the future

ascillato2 commented 5 years ago

@roesl

Thanks for sharing your ideas. It is indeed very interesting. I personally like it a lot, but would be very difficult to develop a driver for it without having the actual hardware and obviously without the car for testing.

I'm adding the label feature request (hold over) for future reference and work.

Also, I'm posting here some links with extra information about this.

EVSE-WB = Electric Vehicle Supply Equipment for Wallbox EVSE-DIN = Electric Vehicle Supply Equipment for DIN

EVSE is for European Standard

Compatibility: • Tesla Model S • Nissan Leaf • Mitsubishi iMiev (Peugeon iOn, Citroen cZero) • Opel Ampera • eGolf • Mitsubishi Outlander PHEV • Citroen Berlingo Electrique • and others

Board explanation: http://openwb.de/manuals/evse-wb-din_20180611.pdf Protocol: https://www.openevse.com/ To Buy: https://www.off-grid-systems.de/Simple-EVSE-WB-Wallbox-Bausatz

ascillato2 commented 5 years ago

For now you can use as a workaround the serial-mqtt bridge feature of Tasmota as @Jason2866 has explained.

Thanks