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I did noticed that you have some net labels hanging in the air. They are not connected to the wire itself. Otherwise, I don't see any problem. I just wondering about the value of R3? Usually this is an inductor, not a high value resistor. You may not get any signal through that resistor... Regards, Markus Virtanen HW / Electronics Designer[Picture]
4 days ago
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Hello, we have already checked this device and there is no problem.[Picture]
3 days ago
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Go through my published projects. There should be several Li-ion charging projects with complete PCB layouts. Regards, Markus Virtanen HW / Electronics Designer
4 days ago
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From the layout: 1. You don't seem to have enough ground stitching via connecting top copper to bottom copper ground. 2. You shouldn't enter or exit from pad in 45 degree angle. The track should always leave or enter in 90degree angles. 3. Buttons mounting holes can be grounded. 4. You seem to have peculiar method to block ground plane entering to adjacent areas. Lets take a left side LED in example. You have a long trace leaving on the right side pad and ending the trace with via right next to a resistor pad, thus blocking the top ground copper entering straight to the modules ground pad. Same thing in the audio connector. You have the right capacitor which is almost blocking the ground to flow between the caps. 5. One important thing is that you should never flood top and bottom copper underneath the Bluetooth antenna. That area needs to be left without ground copper area.
19 hours ago

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