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GiovanniMarletta

Mobility charger for radioddity GD77, baofeng 5° series; tytera and hytera

by GiovanniMarletta Feb 25, 2019
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Checkout my thing https://www.thingiverse.com/thing:3740458 You can use it.

TYT MD 380, Retevis RT3, Radioddity GD-77 USB Charger
by olvin

Molte grazie, but I've already built a lot ot that's USB chargers perfectly on duty.
At least, now, simply I'm not intereste to develop this project anymore, early -maybe- I could release entirely my projects for free.
Regards and compliments for your works.

73' de IW9HLV

Dobryi den! Thank you! Did you use the same scheme (DC-DC + controller)? My DC-DC converter heats up very much, i could not avoid fan. And i did not understand from photo gow you made contacts to radio. If you publish it would be great!

About the circuits: I tested a simple step up and a combination of step up plus a real LiPo charger but without heatsink or fan.

I've noticed some noise affecting the reception coming from the circuits, they are made for other kinds of implementations, shurely not radio operations.

That issues isn't a undefectable problem but in a small plastic case like ours can be a complications .

resuming: on tipical duty, the heat is a lot, for that reason I use only PETG, but the major issue isn't that it blow a lot of heat.

On gharging time the radio's drain some around 2 amps or more and I'm sure that the plus common PSU's -coming from the phones boxes- are not capable to flow the right current needed, a couple of thats are exploded or burned during my tests :-D

Finally, I use one of them with a only "step up", it work well but is ever under my precise clinical observation :-D

Ciao .

Certo !
I will, at the right time I .
I wil be happy knowin that my experiences shall an cultural enrichment for somebody .
regards & 73'

You're ridiculous, you didn't even understand the spirit of this site. You intentionally entered the STL file of an object that has nothing to do with what in description.