Anyone working on getting esphome on emporia Ev chargers. I saw they have beeen succesful with energy management device but that are not same
The Ev charger has esp32
Well, for anyone curious the basics are this.
The energy managment wasnt a large rewrite of the code but it seems to be a task. I belive there may be a simple (not so simple" way.
The Home device was looking to connect to a default wifi network
SSID: emporia
PASSWORD: emporia123
Not sure why that was but they used this and found it was passing messages to a mqtt server.
They decomplied the firmware and figured out the memory location for the SSID, PASSWORD, MQTT server IP and credentials. They then simply rewrote those memory locations.
I read several writeups about evse and home equipment so I am not sure if this is what is used on the home items but I am certain this method was successful to access MQTT message data from this or home unit and likely works for EVSE.
As a noob approach it may be possible to setup this network and setup a MQTT server with the default credentials. not prefered but could work. I dont have defaulted unit and believe this stops functioning after unit is no longer defaulted. Also realized that these thngs cannot be factory reset so curious if anyone who gets one of these in future can verify if wifi credentials above work on NEW device?
did you get it working with esphome fw?
i asked Claude and got the yml. no idea if it will work though… Emporia EVSE ESPHome Configuration | Claude | Claude
That 100% made up. Use at your own risk.
No. My unit bit it after I put it on an WAN blocked network.
Got a replacement unit and never bothered to take it out of the box. REALLY want to sell it and considering giving it away to family member. Maybe one day I will take some initiative to figure this out but I lost interest and just use the 120V charger that came with car now.
This new move to force connections to remote servers –as mentioned here– for basic unit operations is annoying.
This is hilarious. Claude isn’t a magician. It has no more information on how an Emporia EVSE pinout or schematics work than we do. It just barfed out crap. This is why AI is dangerous at the hands of those who don’t understand what it is producing.
I’ve been interested in an ESPHome Emporia EVSE for a while now - but I’m not an electrical engineer, just a software engineer. My expertise is not in reverse engineering physical devices, which is what we need for an Emporia EVSE on ESPHome.
There are likely microcontrollers besides the ESP32 that does most of the hard work for the EVSE Part. The ESP32 is likely just communicating with that chip to set limits, enable/disable charging, and expose metrics. The other microcontroller likely handles all of the nitty gritty of the ground fault monitoring, current limit monitoring, and J1772 communication wire.
The emporia home ac monitoring kit had someone who dumped firmware and found memory location storing MQTT server / WiFi info and just wrote that area
My guess is it is exact same
My unit is new in box and never installed. Willing to sacrifice maybe.
once i got the emporia evse into HA, i blocked the evse from ever getting online. all of the entities relating to power disappeared. only the switch to enable the evse On or Off. strangely, once my car is being charged, i cannot flip the Emporia to Off.
for example, i want to set an automation to auto charge my Ioniq5 to 80% then Off. but once a month, charge it fully to 100%. at 80% through 100%, the switch of the evse in HA is useless. that’s why i really want to flash the evse…
I lost all web access to mine once I blocked internet.
I could charge but couldn’t change any setting or even get it moved to network with WiFi
They sent me a replacement unit. I returned the defective back to emporia and left replacement in box.