CH224K evaluation and solution application optimization

cat3902982

CH224K evaluation and solution application optimization [Copy link]

According to the small DIY solution I made last time, there are some problems as follows:

1.DP and DM lines need to be corrected;

2. The PCB board and the vacuum pump are loose when welded. It is best to leave a hole in the middle so that the protruding part of the pump shaft can be embedded in the PCB board, so that it can be fixed more securely.

3. Now there is only a working indicator light for the pump, and a charging indicator light needs to be added. The PG pin of CH224K should be able to meet this function.

According to the above problems, the schematic diagram and PCB were revised.

The PCB modifications are as follows:

The PCB has been submitted, and I hope to make this DIY as perfect as possible. And in the process of using it later, I hope to collide with some new ideas.

Jacktang

Good idea

lugl4313820

Having ideas, taking actions and being creative is a role model for everyone to learn from!

bigbat

Brother, have you made sure that the position of your TF card does not touch the case and does not affect the card insertion?

cat3902982

bigbat posted on 2022-8-31 09:15 Brother, are you sure that the position of your TF card will not touch the case and will not affect the card insertion?

That is USB type-c, and there is no case yet. I am not worried about mechanical interference.

gaon

Having ideas, taking actions and being creative is a role model for everyone to learn from!

soso

Looking forward to it, come on :)

soso

How's the progress of the host?