QCA7000 Foccci+Clara User thread

[dimonlipko]

Hi! After long delay I am back to my Foccci.

Today I have first successful charging session!))) It is first Foccci in Ukraine!!)

I have project to implement ccs in Fluence ZE with custom battery (bms custom too). Now install Foccci without CAN connection with car, but next step implement it fully like OEM.

I delete one original charging port type 1, and install there type 2 combo. But think about best solution, for control OBC. I can emulate it by CAN, and make for car fake charging session, car close battery contactor. But I need to off OBC, one way is break 12v, or using relay for disconnect OBC from CAN.

I think about add new module CAN relay for realize it.

[uhi22]

Great, congratulations. Surprisingly you found well matching connectors, seems to be a good alternative to the expensive Deutsch connectors. Where to obtain these, which partnumber do they have?

[celeron55]

Those connectors are definitely Molex Mini-Fit (or one of the Chinese clones).

I have some, and an old spare Foccci. Here are some photos

EDIT: Part number is 35318-1220. And the female wire side header is 39-01-2120, and you need contacts also of course (I don't have those listed on my notes).

EDIT: The holes are very tight for these particular Chinese clones, I'm not sure I can push these fully in without damaging the board. It might make sense to enlarge the holes a bit.

[jrbe]

^ that ^ looks more like the row spacing is off connector to footprint from the last 2 images.
If that is a common issue between 2 brands you could make one row or the other slotted holes so it's compatible with either.

[dimonlipko]

I am using molex minifit, but hole in pcb is small and connector not fully insert. I think about make next pcb for china cheap ECU box. What I don't like in this minifit, that 2 connector is the same and possible to confuse. Need use connector that have key.

I portable Johu Web interface to ESP32-C3, and delate native SD card support because this esp is not supported it. And also I make small board only for web ui

Is it possible to make Foccci send fixed CAN message, like example, id 423 data: 10 20 30 40 50 60 70 80, with delay 100 Ms?

I want to add one more digital output for off OBC.

[jrbe]

Molex minifit connectors are something I'd never use based on my history of the female terminals going bad in a short amount of time in a medium vibration product.

These seem to be extremely sensitive to crimping technique and even perfect looking machine made crimps are susceptible. Molex crimped cables seem better but still might be susceptible, i never got to test them fully.

I believe a large part of the issue i saw was less than ideal strain relief on the wires close to the connectors, so it put the load on the crimps and weakened / stretched them over time which led to bad connections.

So at the very least i'd recommend good strain reliefs close to the connector. Might be worth swapping out the connector if you guys start seeing issues or consider a dual footprint soon so it's an easier swap.