Broken focci board ?

[PoloLbricolo]

I noticed that the wakeup functionality of my 4.5a board doesn't work, it gives 12V but i can't draw the 160mah that my setup uses.
I belive that the missing Q13 and Q11 could be the culprits. I wasn't able to find the schematics of V4.5a on the github
https://github.com/uhi22/foccci/
Could someone confim my theory ? also how can i replace them ? i don't knw if it was shipping damage or mishandling on my side. anyways the thing needs to work

[uhi22]

It looks like they were present and "fell off". Crazy.
The 4.5a is on johus fork https://github.com/jsphuebner/foccci in the wakeup branch.
Do you see fly them around? Or any chance to get replacement and solder them?

[Bigpie]

Q13 looks like the pad has been completely ripped off. you might need to scrape a bit of the mask off the track and do a repair.

[uhi22]

Could it be that there was a collision with the housing while inserting? We should increase the clearance with the next layout.

[johu]

Yes that is indeed possible. If you force the board in off-center the transistors will be ripped off.

Will move them away in the next revision. The LED is saved by the rail distance to the front of the enclosure

[PoloLbricolo]

Do you see fly them around? Or any chance to get replacement and solder them?

Sadly i don't see them, i openend the box quite a few times. i'll get some replacements on the road asap.

Q13 looks like the pad has been completely ripped off. you might need to scrape a bit of the mask off the track and do a repair.

Yes some pads are ripped off, but i should be able to repair with a good pair o twizzers and some fine wire.

Yes that is indeed possible. If you force the board in off-center the transistors will be ripped off.

Most likely what i did... well at least it improves everything for the next version.

Got it working by faking the 12v wakeup of the BMS, CCS2 works on an Ecofactor station from work. Still in talks with the guys at OrionBMS to make the AC charge work. i'll probably do a FOCCI / Orion BMS2 setup for dummies in the near future.

Thanks you for you help

[uhi22]

Glad to see the progress, and thanks for the feedback. Such little "accidents" help us to improve, I like this way of learning and working. Hoping more to come, still waiting for a "big smoke" picture, but everything smooth at the moment

[P.S.Mangelsdorf]

Just wanted to add to this, and to be clear I'm not upset or anything, just want to add to the data:

I received my board from Johannes today and the Q11 and Q13 were also damaged, one pushed over and one nearly completely broken off. Fortunately, they are both still present so I'll solder them back into place later today.

As a suggestion, if there are more v4.5a in stock, shipping them outside the enclosure might be helpful in preventing this damage. It looked like they had been knocked off due to being in the enclosure without the header attached.

[uhi22]

Oops, thanks for this feedback, and sorry for the additional work. I hope it is not too complicated to fix. I think yours was the very last 4.5, the new version 5 boards have much more clearance, lesson learnt.

[johu]

Sorry, too. We thought it would add protection to ship it inside the enclosure.

[P.S.Mangelsdorf]

Not a big problem, just wanted to share to help flag/fix the issue! I got lucky and they stayed with the board, so I can fix them fairly simply.

[P.S.Mangelsdorf]

So I finally got around to attempting to fix my board this weekend, and it looks like it did pull the pads up on Q11 and Q13 for me as well. Is there a way I could jumper around these components to get the board functional? From my understanding they are just for wakeup, correct? I'm happy to have it wake up via an external switch or something if that would save the board.

[uhi22]

It's really a pity that we managed to place the transistors at this dangerous position. But the good news is: The Q11 and Q13 are only needed for controlling the WAKEUP line by the controller.

Q13 gets the trigger_wakeup signal from the controller, and drives the gate of Q11. Q11 switches the 12V to the WAKEUP pin on the connector. This is only needed if there are other control units (e.g. VCU or BMS) wired to the WAKEUP and the Foccci shall wake them up.
So the easy solution would be: We do not need Q11 and Q13 at all, if the wakeup functionality is done with a switch/relais/diodes/whatever.

[P.S.Mangelsdorf]

So the easy solution would be: We do not need Q11 and Q13 at all, if the wakeup functionality is done with a switch/relais/diodes/whatever.

Ok, so if I'm giving the controller a wakeup signal on the external connector, I don't need to worry about not having Q11 and Q13?

[uhi22]

You need the Q11 and Q13 only, if the Foccci shall wakeup other control units with the wakeup line. For waking the Foccci (with CP or PP or button or wakeup line) they are not necessary at all.

[P.S.Mangelsdorf]

For waking the Foccci (with CP or PP or button or wakeup line) they are not necessary at all.

Great, thanks!