V3.8 flyback question

[cerozg]

Hello,

I am assembling V3.8 board. I found board schematic and it was very helpful. But i am not sure what flyback type to apply to V3.8 board, hiZ injectors? I cant find flyback part on V3.8 schematics. It is only mentioned in textual form in documents which came with recue kit board.

I found two different versions of flyback solutions:
1. Only 1K5E30V diode from flyback pad to ec36/pin23.
2. 1K5E30V diode + capacitor (light red one wima mks 4 4.7 uF 100 - 10% which comes with recue kit) between flyback pad and ground + ground reinforcement

Is ground reinforcement essential or optional?
I saw pictures of booth solutions, but i am not sure which solution is applied on assembled V3.8 board?

And one more about sck pullup on isp header. Is it optional or essential on V3.8 board? It didnt came soldiered on board.


Thanks in advance

[cerozg]

It seems nobody is willing to help here.

[Kamuto]

It seems nobody is willing to help here.

it was written what serial numbers are affected by sck pullup, yes 1.5ke30a for flyback

[cerozg]

OK. So, only boards with listed numbers need pullup, all other boards do not need sck pullup.