Some feedback from my order of a small batch of MYNDberry PCBs (PCBWay):
Item C1 in the BOM file, part number C15849, has “1µF/12V” as description but the part is rated 50V according to LCSC which caused some confusion.
According to BOM and position file “R1” is being placed and not R2, but the position of the part is at “R2” on the silkscreen. So maybe the designator or the position could be changed to avoid questions / delays.
H3, the SMD connector for USB-UART, will block the through-holes for H3 which I needed to confirm before proceeding with the assembly.
Awesome! Thanks for posting!
Interesting, I didn’t have to approve H3 at all but good to know that this might come up and isn’t a problem. The added TH header was mostly in case the 3pin SMD connector was too mechanically instable and ripped off, but it is suprpsingly stable so might even remove it for further revision.
Might have to check the positions for R1 and R2…
Anyway, have fun and would love to hear updates if everything works for you
It works!
It takes a bit to boot up but then radio plays fine, buttons also seem to work. I hope to have some time to do more testing soon.
A few more remarks:
There is one positioning pin for the Bluetooth / MYNDberry PCB which now ends up below the RPi connector. There is a hole in the correct place in the new PCB but the pin is too long and pushes on the RPi connector from below. So I shortened it slightly. Otherwise it would block the MYNDberry from properly getting into position.
There is a ground-connector from the battery-PCB which has a rather short cable and was connected with one screw of the Bluetooth PCB that is not used for the MYNDberry (it is below the RPi connector now). So I replaced that cable with a slightly longer one.
It was kind of tricky to remove the Bluetooth pcb, I first tried to lift only the main pcb (to unplug BT and AMP) but that didn’t really work (the connectors are rather tight) so I unscrewed Main+BT+AMP and lifted them all a bit to carefully unplug the BT PCB (after removing the AMP connector).
The microSD card should be (re-)inserted after assembling the PCBs, it blocks the main board when it is in the slot. (Can be seen in the bottom left of the picture below)
Damn, that’s a really good price… IOSS really comes in clutch here. PCBWay were able to just source all the parts themselves with the provided LCSC numbers or did they ask you to select parts yourself?
They selected all the parts according to the bom file, I just needed to check and confirm the list. I think there was a free shipping discount that was applied automatically.
