72Mhz & 2.4Ghz in one
Ok guys, I hope you liked the part 1, in this very part 2 I'm showing a deeper modification made to my JR SX-600 transmitter, I been using AA battery packs to power my radios . But what about those unused cell phone batteries? , this is why I decided to try to use them in this radio, so this is the results. Also in this Tx I kept the 72Mhz module because sometimes in the field may be there someone using FPV Systems in 2.4Ghz.
If this look interesting to you, this is how I made it. (Have you noticed?, there is no battery?)
First let´s take a look inside because in this case we will put inside the transmitter a 2.4 Ghz module, as well cellpohone bateris and keep the transmiter´s 72 Mhz module.
This is what I did, As you can see there is no more free space inside, I know it looks messy but works really great, first take a look on the battery cells, they are three cell phone batteries connected in series with a balancing port like a lipo pack
And those are the Diagrams for both modifications
Cells connection and balancing port
Frequency Selection
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With the 6 pin switch is the same process, in this case you also can switch the ppm signal, the ground (-) is common for the radio and both modules.
I hope this helps you to your proyect. Ask again if you need anything more
Thanks
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I have a question about batteries. Now I use 5x NiMh and want to change it to 2x li-ion cells because they are better than this old and cheaper than li-fe (for 2 batteries from I9100 I pay only 6$). This batteries have built inside electronic Have you checked how it is with discarge these batteries. Was this electronics does not allow too deep-discharge - maybe you tested it?
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tha
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ps: I'm confused, Two batteries are enough to power up your radio?
Sorry for the delay on responding
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