G-OSD mod – adding programming pins (ISP)
This is my modification of G-OSD from HobbyKing.
– Connect smaller and lighter Mediatek based gps module (GlobalTop Gms-u1LP) instead of stock big and heavy
– Make reprogramming easy.
Why smaller gps module? Because it’s smaller 🙂 , draw less current from battery and offer much more frequent position updates.
Here you can see how small is this module compared to provided with G-OSD:
I saw few mods of G-OSD on Rcgroups but none of them fit my needs, most of them have additional side connector for programming and this makes module much larger.
I decided to extend original connector with few new pins. It occured to be quite easy job 🙂
At start you need to remove heatshrink wrap and plastic part between goldpins:
Prepare new, larger two rows golpin module (in my case 8×2 pins), remove from it pins already present in G-OSD:
Put plastic with additional pins on old pins:
I soldered 3.3V LDO voltage regulator (directly on pins) required to power new gps. I decided to put it into OSD instead of gps module because I had space there for it, one free pin and I’ll have possibility to connect this gps to other devices for other purposes. Connected rest of new golpins with programming pads of G-OSD using Kynar wires:
Put description of pins on the back of pcb and put all into new shrinkwrap:
That’s all. New G-OSD is ready to work with 3.3V gps and ready to get new firmware, for example CL-OSD
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