From which vehicle?

Are you aware that there are BMS's on the market?
Not trying to sell but more over maybe saves you time to focus on the conversion it self and maybe if you stick to Hyundai can be used later too.

Machine shop? Pfft. Hacksaw and some spare time. https://mattsawesomestuff.com/Projects/Vehicles/Nighthawk/Nighthawk%20Parts%2031.jpg If the spline isn't very over dimensioned sooner or later it will start to develop play. Atleast thats my experience with DIY splines. So great job but be careful wh...

Maybe the solution lies in a current sensor and a relais and HVIL style circuitry. So we don't open a breaker but we do limb the engine and thus the current flow with out opening a breaker.

crasbe wrote: ↑Tue Feb 14, 2023 12:06 pm Their custom driveshafts from Motomax in Poland: http://www.motomax.pl/en/home-page/

They cut the splines to original fitment.
You just send a tack welded correct axle and they make a new one.

The same company sells the front drive shaft parts too.
The reason for the extension axle is to limit torque steer.
The more equal the drop angles the better.

The IVT-S current shunt w/three HV inputs and CAN output is fairly expensive (though also very reliable and a quite nice piece of hardware), and I find that discussion of alternatives to it are on-topic for this thread, as some kind of current sensing (and translation to CAN) is required by the i3 ...

johu wrote: ↑Wed May 17, 2023 3:12 pm I also start balancing above 3.8V, in that region soc/voltage curve is steep

No so steep you mean?

It's M6 but it are copper bolts if i recall correctly.

I would google the M6 strength for steel and compare steel to copper strength and down factor accordingly. With some safety.

"All the defective cells came from LGES’s plant in Nanjing."

I guess the cells are marked and are traceable?

What was the fix?

I understand you get that feeling especially when Ingeneerix makes the video but i think he shows a general approach in this video not specific the Tesla one. For one reason i think that because he doesn't state it's the plaid implementation etc. he shows an TI Reference design (actually the same as...

The only solution I can come up with is to use a fuel pump inertia switch wired into the positive (after fuse) side of the contactors. Or if your using a relay to trigger your 12v which includes the contactors then the input to the coil would be a good place. The current rating seems to be ok at 10...

Yes sure! That's implementation considerations but i agree we don't need an uC for everything.

I don't get your point. I didn't couple any human action into the Estop except pressing that button. OP writes about Estop sequence disconnecting the pack and freeing the wheels. Call it a non coupled 2 stage Estop. So the disconnects happens anyway but the drive does get the Chance to save it self....

I have read it. It's about a "safe state" not about shutting "off". I'm not saying that a safe state doesn't mean you shut something off what i try to preach is that it could be more sophisticated sequence. That why there exist safety controllers etc. If i was the builder i would...

Well to elaborate a bit on this. In situ one it's not about "off". It's about a "safe state". For example weights should still be kept in the air and movements should be actively decelerated. Also certain parts of the machine should be moveable seperately still in order to be abl...

Well if you are confident that's correct, and i must admit you got good reasons. Then you need to add this speed to the devices you mentioned. Maybe they don't support this speed. How do you configure them anyway?

With the peak (which version?!?) you often choose self sampling timing. It's important that those timing settings are correct. I think that if you assign that "odd" speed in the microcontroller the timing is off. It also might be that the bus isn't 83.3 but 100K or more common 125K. I assu...

Edit: Nevermind! Found it. Good job en progress

DkubusEV wrote: ↑Mon Apr 10, 2023 7:47 am Did lightyear go out of business?

Partly they did.

On of the issues with these auctions is that you can also bid on assemblies of auctions...

If you want to only send start it's byte1= 0x01;
If you want to only activate it's 0x04;
If you want to combo it's 0x05;

Now what and when is up for you to test. I think start needs tobe high and activate sets the new speed.

my question is what is start and what is activate ? Only the writer of the text knows... But i think both need to be one. First start and in the second message you set activate too. what binary goes in the bits ? 0 or 1s Both but often when the assignation needs to be activated it's done with a 1. 0...

A byte = 8 bits always.

Bits not in use = 0 / reset.
Bits in use and active a 1.

So to start do:
byte 1 |= 1; //bit 0

To activate
Byte 1 |= 4; // bit 2

For the checksum I recommend finding a sketch with an example.