Fatshark voltage converter

thingiverse

Hello FPV Pilots and Drone Racers out there! Ever found yourself short on Fat Shark batteries at the flying field but still had flight batteries left over? Here's another solution for you: Build a converter from flight batteries to an 8.4V output to power your goggles using any 3S or 4S lipo with an XT60 connector. To complete this project, you'll need the following: 1. Voltage Regulator https://www.amazon.com/DZS-Elec-Converter-Adjustable-Communication/dp/B07CZW83TH/ref=sr_1_2?ie=UTF8&qid=1533139873&sr=8-2&keywords=mini+360+3a+dc+voltage+step+down+power+converter+buck+module 2. Voltage Alarm https://www.amazon.com/UAV-Warning-Buzzer-Voltage-Indicator/dp/B07B475JDM/ref=sr_1_2?s=electronics&ie=UTF8&qid=1533139917&sr=1-2&keywords=rc+voltage+alarm 3. XT60 Female connector https://www.amazon.com/AUTOUTLET-10Pairs-Bullet-Connectors-Battery/dp/B07BS5YLKL/ref=sr_1_1_sspa?s=electronics&ie=UTF8&qid=1533139957&sr=1-1-spons&keywords=xt60+connectors&psc=1 3.5mm DC power jack connector https://www.amazon.com/Socket-Threaded-Connector-Adapter-Lsgoodcare/dp/B078RJKLKB/ref=sr_1_21?s=electronics&ie=UTF8&qid=1533140091&sr=1-21&keywords=3.5mm+power+connectors 3S and 4S female balance plug connectors. https://www.ebay.com/itm/10-Sets-DIY-2-54mm-JST-XH-4S-5P-5-Pin-LiPo-Balance-Connectors-Plug-Housing-Pins/162477227014?hash=item25d465bc06%3Ag%3ABAYAAOSw5UZY86pU&_sacat=0&_nkw=lipo+balance+plug+connectors+kit&_from=R40&rt=nc&LH_TitleDesc=0%7C0 Of course, that's a lot of components to purchase, but those are the things you'll need for this project. Any RC hobbyist already has these parts lying around. To complete the build, remove the pins from the voltage alarm and solder two balance plugs to corresponding pins. The 3S will share every connection with the 4S, while the 4S will have an extra pin left over. Secure the plugs with CA glue from inside the enclosure so they don't move. Use double-sided tape or glue to attach the components in place. Set the adjustable voltage regulator to 8.4V and apply a drop of CA on the potentiometer so it won't change due to vibration. Finally, create a cable with a 3.5mm male connector on each end. On the goggles side, make it right-angle and attach a male 2S balance plug coming from the same power wire at the top to power the fan in your goggles. I recommend making the cable length reach from your pants pocket to your goggles or shirt pocket, whichever works best for you. PS: If the LiPo buzzer is too loud, stick two pieces of bubble gum into the holes of the little speakers. This will muffle the sound and still make it loud enough for you to hear it. Enjoy printing and building! Have fun, don't forget to like!