[DIY: 3D Printed] Bottom charger part for hotspot electronics

[F1RMB]

Hi,

I've designed and printed the required parts to embed the hotspot in the original charger.
It's running since yesterday night without EMI problem (250mW).

I've uploaded all the STL and FreeCAD files to Thingiverse.

overview.png (124.38 KiB) Viewed 1972 times

cameringo_2020-02-28_210954-scaled.jpg (148.28 KiB) Viewed 1972 times

cameringo_2020-02-28_211615-scaled.jpg (141.07 KiB) Viewed 1972 times

cameringo_2020-02-28_214742-scaled.jpg (137.22 KiB) Viewed 1972 times

cameringo_2020-02-28_221306-scaled.jpg (131.23 KiB) Viewed 1972 times

Enjoy.
---
Daniel

[F1CXG]

Seen this afternoon in action, a superb achievement, with hight precision.... as usual, (I ordered one)

[HB3XPL]

hello can you please tell me if the 2 cond. are the same 104 ? or they have diffrente values. Thanks a lot

[F1RMB]

Hi,

hello can you please tell me if the 2 cond. are the same 104 ? or they have diffrente values. Thanks a lot

It's 10nF + 100nF. Look here, I've commented the picture.

Cheers.
---
Daniel

[F1CXG]

Seen this afternoon in action, a superb achievement, with hight precision.... as usual, (I ordered one)

Kit delivered last week by Daniel, here is the result:

TERMINE.jpg (378.74 KiB) Viewed 1724 times

[F1RMB]

Seen this afternoon in action, a superb achievement, with hight precision.... as usual, (I ordered one)

Kit delivered last week by Daniel, here is the result:


TERMINE.jpg

Cheers.
---
Daniel

[jobdone]

I notice the copper plate is to stop RFI , the pi however is wifi, surely this will have a negative effect?

[F1RMB]

Hi,

I notice the copper plate is to stop RFI , the pi however is wifi, surely this will have a negative effect?

There is also a little piece of copper tape under the RPi. No, there is no huge impact, I wanted to avoid at most is the RF from the transceiver.
Also, you can find a lot of people using some cheap Simplex MMDVM hotspot installed into aluminium case.


Cheers.
---
Daniel