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Just for logging purposes, in the FB EB status message after the voltage for each phase there seems to be the amperages (multiplied by two).
Starting to charge on a 3-phase 13A circuit:
Starting to charge on a 3-phase 13A circuit:
Code:
[2020-04-11 21:30:43] STATS - 5 kWh 234V 234V 236V 0A 0A 0A == eb95410000000500ea00ea00ec000000000086
[2020-04-11 21:30:45] STATS - 5 kWh 234V 234V 237V 0A 0A 0A == eb95410000000500ea00ea00ed000000000087
[2020-04-11 21:30:47] STATS - 5 kWh 235V 234V 237V 0.5A 0A 0A == eb95410000000500eb00ea00ed010000000089
[2020-04-11 21:30:49] STATS - 5 kWh 235V 234V 237V 0A 0A 0A == eb95410000000500eb00ea00ed000000000088
[2020-04-11 21:30:51] STATS - 5 kWh 234V 233V 237V 1A 0A 0A == eb95410000000500ea00e900ed020000000088
[2020-04-11 21:30:53] STATS - 5 kWh 232V 234V 237V 3.5A 0A 0A == eb95410000000500e800ea00ed07000000008c
[2020-04-11 21:30:55] STATS - 5 kWh 231V 234V 237V 5A 0.5A 0A == eb95410000000500e700ea00ed0a010000008f
[2020-04-11 21:30:57] STATS - 5 kWh 231V 235V 237V 5A 0A 0A == eb95410000000500e700eb00ed0a000000008f
[2020-04-11 21:30:59] STATS - 5 kWh 230V 231V 238V 6.5A 6A 0A == eb95410000000500e600e700ee0d0c0000009a
[2020-04-11 21:31:01] STATS - 5 kWh 230V 230V 239V 8A 9A 0A == eb95410000000500e600e600ef1012000000a3
[2020-04-11 21:31:03] STATS - 5 kWh 229V 228V 239V 10A 10A 0.5A == eb95410000000500e500e400ef1414010000a7
[2020-04-11 21:31:05] STATS - 5 kWh 229V 228V 239V 10A 10.5A 0A == eb95410000000500e500e400ef1415000000a7
[2020-04-11 21:31:07] STATS - 5 kWh 229V 230V 231V 12A 12A 13A == eb95410000000500e500e600e718181a0000c2
[2020-04-11 21:31:09] STATS - 5 kWh 229V 228V 231V 13A 13A 13.5A == eb95410000000500e500e400e71a1a1b0000c5
[2020-04-11 21:31:11] STATS - 5 kWh 229V 228V 231V 13A 13A 13.5A == eb95410000000500e500e400e71a1a1b0000c5
[2020-04-11 21:31:13] STATS - 5 kWh 229V 230V 231V 13A 13A 13.5A == eb95410000000500e500e600e71a1a1b0000c7
[2020-04-11 21:31:15] STATS - 5 kWh 229V 230V 231V 13A 13A 13.5A == eb95410000000500e500e600e71a1a1b0000c7
Last edited:
If someone is looking for a load balanced version of the TWCManager.
BitterAndReal/TWCManager
I used the following Raspberry pi zero shield to measure the utility mains current.
RPIZ CT3V1 - lechacal
The mains current is used to protect the mains fuse and to charge with left over green energy.
BitterAndReal/TWCManager
I used the following Raspberry pi zero shield to measure the utility mains current.
RPIZ CT3V1 - lechacal
The mains current is used to protect the mains fuse and to charge with left over green energy.
Is it easy to setup two of those and measure?
I Want one of them to track my current from my solar panels and one for the mains to "track green energy" but im not really a software guy more of a hardware guy.
Best regards
Hello all,
I need still some help too setup my Raspberry pi Zero W in combination with the SolardEdge inverters and WattNode meter.
Can someone simplify the installation with an setup setting like the simply installation as Pi-Hole. This is the installation script for the most advanced AdBlocker and trackerBlocker
curl -sSL https://install.pi-hole.net | bash
I need still some help too setup my Raspberry pi Zero W in combination with the SolardEdge inverters and WattNode meter.
Can someone simplify the installation with an setup setting like the simply installation as Pi-Hole. This is the installation script for the most advanced AdBlocker and trackerBlocker
curl -sSL https://install.pi-hole.net | bash
It is quite easy to setup for mains measuring. I documented it a on github.
BitterAndReal/TWCManager
If you want to display your solar panel production that has nothing to do with the TWCManager but could be done with the same hardware if you want to write code for it. Maybe it's easier to use dedicated hardware and software to do the visualisation and logging of your solar production.
I dont want to display my solar, i just want to measure it and take (solar power - mains=charge car) so my take from the grid is about 0W
But i havent found any way to get the data from my SMA inverter so i thought it might be easier to use 2 pi and measure on both mains and inverter cables and then do the calculation to know how much amps to put in my car.
It sounds easy on paper but i know it canbe hard to do.
But i havent found any way to get the data from my SMA inverter so i thought it might be easier to use 2 pi and measure on both mains and inverter cables and then do the calculation to know how much amps to put in my car.
It sounds easy on paper but i know it canbe hard to do.
That is exactly what I'm doing. You don't need measure solar production if you're measuring the mains.
If the mains current is negative your sending electricity to the grid which can be used to charge the car.
I have added a couple of lines to the TWCManager.py which allow me to:
- Read the grid smartmeter value via modbus TCP (Fronius Inverter)
- Read from iobroker the instant power of my home made powerwall
- Send to a remote server influxdb the instant power being delivered to the vehicle
This allows nice graphs using grafana
very proud of the performance of this system! Charged today around 30kWh into the Tesla, could have been more but was not necessary.Interesting development. I see this as the future or smart grids, but Tesla historically wasn't as supportive.
The 3G TWC is just normal evolution in product design - improving Design for Manufacture (DFM) and costing down. I doubt it has the electronics inside it to convert the DC from the car back into AC and synchronise with the grid.
There are products out there already such as the Wall Box Quasar. Potentially, all Tesla need is the software to negotiate bi-directional DC charging (and connect the HV pins on the charge port to battery).
These types of projects use Tesla's Powerwall or Powerpack. As @Craig 128 pointed out, there is no DC->AC inverter in the car or Wall Connector. The necessary hardware simply isn't there.
It doesn't - no mention of such hardware in the manual, and you couldn't do it at the $500 USD price point, anyway.
nick_tassi I followed up and found a bug with the Timeout of the function where it would stick at last set. Rather than rewrite, i just added a bug handling function. I've not seen the bug pop up again, but have only ran it 2 days.
the "6 amp charge" bug i think is in the HTML where the car is "finished charging, unplugged, or waking up" and allows 6 amps, even though the GreenEnergy says 0 is available. Mine pulls every minute, so it turns off within a minute. I'm not to worried, but have confirmed there is a bug. I think those functions were all put together for some reason. May need a deeper dive.
other notes: added actual voltage from the Envoy, not just assume 240. also added a bias of .1 (100 Watts) to try and not export any to the grid.
@Myfirstone, @Blip
Also interested to hear how you are getting on and if you want to collaborate. I've been casually writing code to communicate with the TWC Gen2 in C for the past month with the plan to eventually target an ESP32. Still very much in development and some functions such as escaping the 0xC0 bytes are missing. But the packet structures are documented:
craigpeacock/TWC
Also interested to hear how you are getting on and if you want to collaborate. I've been casually writing code to communicate with the TWC Gen2 in C for the past month with the plan to eventually target an ESP32. Still very much in development and some functions such as escaping the 0xC0 bytes are missing. But the packet structures are documented:
craigpeacock/TWC
here in the Netherlands Tesla has tested grid directional with the grid operator. So it’s possible!
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