FPV Tracker on 2S Lipo – a question from Dave

Question: I just wanted to know the operating voltage for the FPV RC BEACON, when its signal lead is connected to a RC receiver running directly on a 2S Lipo, which can reach 8.4V when freshly charged. Maybe a glider install. Answer: The FPV tracker does monitor the power and […]

Tracker versions

orange pi lite sbc

Orange Pi Lite and Zero boards

I have a couple of applications in mind and thought these boards looked quite interesting.  Small, low cost reasonably powerful.  So I bought two each of the Orange Pi Lite and Orange Pi Zero boards, and a couple of camera modules.  The applications I am considering are a weather station […]


6 Position Rotary Switch – flight modes

They need modification I got a couple of these 6 position rotary switches from Ebay and fitted one to a Turnigy 9XR Pro transmitter replacing one of the analog pots.  The solder pads are labelled VCC, GND and FLAP, I assumed for +5V, GND and SIgnal. The result was a […]

6 position flight mode switch

linux logo

Linux Update – Aug-2016

Background Linux is the stuff going on in the background, the various flavours are what you see on the screen and how it works for you.  The variations are referred to as Distros. I have been using Linux for everyday desktop machines for 10+ years.  From memory, Red Hat briefly, […]


Turnigy Power Unit Repair

According to the Specifications The Power Unit is a dual voltage regulator intended for use in larger scale RC with bigger servos and greater power requirements.  The higher current ( 8-Amp ) servo output can be jumper selected between 6.2V and 6.7V.  The lower current ( 5-Amp) receiver-controller output is […]

turnigy dual power unit rc bec

Turnigy 9XR-Pro switch

Turnigy 9XR-Pro Notes

These are just a few notes and comments created along the way.  I hope they will help others.  If you have any comments or additional information, please let me know and I will update here. NOTE: I don’t use Windows. It is supposed to be possible to update these transmitters […]


Repair of 7″ LCD display for FPV

Power Supply Failure For no apparent reason the main voltage regulator burnt up while operating from a 3-cell Lipo battery (about 12V). It may be that if the supply voltage drops low enough, the switch-mode regulator can’t cope and self destructs. It looks like the failed switch-mode regulator drops the […]

fpv display repair

peltier cooler box

Peltier Mini-Cooler for Fridge Controller tests

With the hot summer days I decided to have a look at improving my fridge temperature controller.  A couple of timing adjustments will probably improve it and reduce icing. Making a mini test fridge Not wanting to experiment on the working fridge, I built a small cold-box from foam PVC […]