davewill
Active Member
I find it hard to believe that an extra 0.07a (1W @ 14v) is going to be significant. I wouldn't think twice about it.
You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
I received my HPWC last week and I also have my RS485<>USB converters in.
I started work on porting the Perl code to Python: GitHub - wido/smarthpwc: Smart (Tesla) charging with a EU HPWC in combination with a Dutch Smart Meter
I don’t know yet, it is still in the box.... I am really short on time. Traveling at the moment and won’t be home for another week er so.Woot! So, you've got a new TWC with the latest firmware, right? Is it sending any additional messages or data with voltage or battery state that TWCManager doesn't recognize?
@widodh : I think we all appreciate & applaud your effort ... but are you not creating unnecessary confusion by referring to HPWC (the old version/name) instead of TWC as it is commonly called nowadays ?I started work on porting the Perl code to Python: GitHub - wido/smarthpwc: Smart (Tesla) charging with a EU HPWC in combination with a Dutch Smart Meter.
Fair point! Didn't think about that. Renaming it is easy, might do that indeed.@widodh : I think we all appreciate & applaud your effort ... but are you not creating unnecessary confusion by referring to HPWC (the old version/name) instead of TWC as it is commonly called nowadays ?
06 charging, increase charge current with 2 amps?
07 lower charge current temporarily (10 seconds) with 2 amps.?
08 ack of master to charging stopped from slave.
09 limit charge current (next two bytes)
06 and 07 are weird, why would the TWC send these messages?
which RS485 - USB converter did you buy in the end ? and where ?Yes, I think I'll go for a USB version so I can easily run some Python code on my laptop and sniff the traffic.
I haven't worked much with RS485 before so it's new to me. Mainly been doing RS232 but that shouldn't differ that much.
AliExpress they have a lot of them there. Do not know which one exact anymorewhich RS485 - USB converter did you buy in the end ? and where ?
Has anybody figured out what keeps two TWCs from transmitting at the same time on the single bi-directional bus? It looks like the slaves don't respond unless spoken to first. But this method might not work so well when querying for the IDs of the slaves.What MITE46 said implies the protocol IS bidirectional. The fact that each HPWC is connected to another HPWC by only two wires only implies they can't communicate at "full duplex" meaning they can't both send data at the same time. Instead, they communicate at "half duplex" meaning only one HPWC can be sending data at any particular time. They must simply agree on rules that govern which HPWC will send data at any particular time. If they both try to send data at the same time with only two wires, the data is corrupted.
Has anybody figured out what keeps two TWCs from transmitting at the same time on the single bi-directional bus? It looks like the slaves don't respond unless spoken to first. But this method might not work so well when querying for the IDs of the slaves.
http://(Pi Zero address)/index.php?submit=1&sendTWCMsg=FBEB7777032E000000000000000000