Confusing GPS Formats I have several GPS receivers that provide coordinates like these: 4107.9095 17502.6079 : embedded module 4107.8780 17502.6300 : gps stats phone app 4107.8861 17502.6290 : Navman usb mouse gps Google Maps doesn’t like this format, so you have to change it slightly. It’s a GPS format but […]
I have been using the 5.8GHz 200mW FPV system from Hobby King rather than my original 2.4G system for a while now. So I was looking at the small 10mW 2.4G mini-fpv transmitters I built over a year ago and wondered how they would work with a cloverleaf antenna. For […]
This is a bit of a work in progress and will be updated occasionally. RC – Radio Control Used for all sorts of applications but mostly thought of for model control; planes boats, cars etc. This is about model control and references New Zealand frequencies but the theory can be […]
I’ve posted some notes here. I’m always interested to hear from anyone with Kristil related problems or questions, or with parts to repair. I designed the original system back in the late 1990s and still have a lot of the information and can repair most components. Triac Module notes: Looking […]
I’ve been using the tracker in my FPV plane for a while now and it has been working as expected. A couple of times I’ve forgotten to replace the disarm jumper on landing which just means the unit starts transmitting on the drive home. Although it’s sealed inside a foam […]
Based on the build guide from IB Crazy on RC Groups I built a Helical antenna for 5.8GHz FPV. Assembly All up it took almost 3 hours with a few breaks waiting for glue to dry. The reflector is double sided copper laminate (because I had a couple of scraps), […]
Can a 3 cell LiPo be used safely in a transmitter that was designed for a 8 cell NiCad or NiMh pack? It will operate fine from a 3 cell Lipo. The main advantages of the LiPo are larger capacity and very low self discharge. The biggest danger is leaving […]
This is my opinion…. Both suck but in different ways. Before you say use another browser or don’t block adverts, I will say forget it. If a site doesn’t work correctly with Firefox as well as other browsers then it shouldn’t expect any sympathy if it’s live on the interweb. […]