Im slashing prices to $150 a unit.

I designed a new BMS that I plan on commercially selling that is compatible with the ZEVA system (same CAN bus format) but uses ICs that I have a 10 year commitment on so I no longer have any real use for these.

Tito wrote: ↑Fri Apr 19, 2024 10:28 am Ok. I know about the different protocol but I'm positive the EVMS can be reflashed to V3. If not I'll source a V3 or have one made as they are open source now. But i'll take care of that.
Can you do a good deal for me with shipping 7 of them to the Netherlands?

Private messaged

Hi! Messaged you on eBay. Just curious, will these work with the ZEVA BMS directly or do they need reflashing? It’s for expanding a battery system currently equipped with the V2 system (but I think they allow reflashing to V3) I would need 7 units. I will be doubling the 10 battery modules to 20 bu...

Dropping price to $175 a unit

brianbri6 wrote: ↑Sat Sep 02, 2023 2:32 pm You need to externally power the becm and connect to the HS CANBUS with GDS2 it will read the Voltages.20230809_104729.jpg

How did you get GDS2? I didn't think you could get it without being a service center.

tensa wrote: ↑Sat Sep 02, 2023 3:43 pm Kindly request that you point me to the documentation as I can not seem to find these data sheet registers for the life of me.

https://www.analog.com/media/en/technic ... 0324fa.pdf

Check operation section of this PEC (the CRC) info starts on page 17

tensa wrote: ↑Sat Aug 19, 2023 7:36 pm How do you add the CRC?
I used LTC6803-02 and they can't seem to work, I was wondering what the issue is.

All info to implement crc in code is documented in the 6803 data sheet memory registers.

uberbug wrote: ↑Tue Apr 25, 2023 3:01 am Thanks for the info! I sent a PM to ask if you want to sell some LTC8202-2 or finished boards.

Never received the pm! Sorry for the late response.

Are you sure you are working with gen 2 BMS? I'm pretty sure that BMS isn't distributed. Can you add some pictures of your test setup?

LTC6803 introduced a CRC so you would need to add to the driver code in order to use it. however is pin compatible so no PCB changes. I bought a bunch of ltc6802-2 from an Alibaba IC sourcing company since their min order quantity was 50 units. They have all worked flawlessly so far and I have so ma...

johnspark wrote: ↑Mon Feb 06, 2023 3:41 am Ah do you mean bootlace ferrules? that fixes stray wire strands, there would still be the issue of the screws 1mm apart. Crimpable TE superseal connectors sounds interesting. I would be happy to pay more for it.

Kind regards.

I could help but it depends on how many you want to purchase.

KimchiKimKim, I love the overall design of these boards, (thank you Ian Hooper). But I have never been keen on the terminal connector with the screws only a mm away from each other. A potential short circuit could occur. Do you know of a different connector to the black ones that have say crimped o...

johnspark wrote: ↑Tue Jan 24, 2023 9:38 pm Ok well you have orders for 3 from me when you have the time,

Kind regards,

PMed

Have you or are you going to create the Zeva current sensors? I have bought the Zeva system for my car to install once I get to that stage, so I am very glad you have created these items :) Yes, I will. These require a complete redesign since the current sensor used is extremely old and very diffic...

Awhile back I made a bunch of BMS24 units for a project that has to monitor a ton of parallel groups. I ended up selling the battery pack and dropped it to 96 cells so I have a ton of extra BMS units left over. Since they are based on the hard-to-find LTC6802 IC I hand-calibrated and assembled them ...

Not using salvaged EV cells - I've using Boston Power Swing 5300 cells built up into 4S9P modules... Hi, its taken 6 months of waiting, but I finally have the Zeva pcbs made and now populated with the BMS and ATMega chips. Thanks very much to Ian Hooper for making this design available! I couldn't ...

Any resistors on the input to pull it to a steady state? Do not want any EMC noise or start up weirdness causing unwanted behaviour. Interesting point. When reading the datasheet of my switches they seem to take care of this internally. You're right it couldn't hurt to add this though but since it ...

They are almost identical functionality-wise. One of the key differences is the j1772 integration on ORION 2 and the ORION 2 is also way smaller.

If you can get a good deal I would definitely go with the ORION 1.

Hi, The Orion BMS uses low-side switches as output for the BMS but the max output is 100ma (not enough to drive anything serious). I made a board that solves this problem. Probably could save money and skip caps but I used them since my BMS is super far away from my 12v battery (across the car) to p...

Having an issue right now where my gen 2 Tesla OBC with the latest firmware from Patreon. The parameters do not save on a power cycle. The charger works but I need to manually set parameters every time I turn it on via the web interface. Does anyone know a workaround? I'm thinking about compiling a ...

Called up EV controls. They state that without the logic board I'm straight out of luck as they do not reflash more than one control board per unit sold. Man, I really wish someone would post the CAN firmware update sequence for updating the drive unit. I've been looking into doing this for a while ...

I bought a new display and the touch is restored! Looks like the guy basically gave me a TC-1 for free since the replacement resistive touch panel was less than 20bucks from buydisplay.com Unfortunately, there is nothing in settings or options for firmware updating. I think the fuse they set might b...

I probably could make some.. rather.. I have can connections.. but I'm not sure to which bus's.. but its probably what you need. my connections are via the camera.. and with openpilot/comma if your still interested.. hit me up and I'll see what I can do. the format I'd gather is almost certainly a ...

I have a 2020 model QAC7000 module so something of that year. Whatever you have would be useful though!

I bought a broken TC-1 to teardown and show whats going on inside. The design is super weird - using high-side drivers to drive relays but not just driving 12v outputs with them directly. Also, everything is hand soldered and there were even solder balls running around inside! They are using a Mikro...