AIO flight controller fails with smoke

Just sitting there it went poof I was about 3 metes from the quad playing with the Multiwii Android app on the phone. The quad on the floor by the door and powered up with a 2200 3-cell Lipo. The app alarmed and said “no data received”. When I looked […]

Bluetooth modules

2.4ghz radio jammer signal

More thoughts on 2.4GHz RC reliability

More trouble with interference – Jan-2017 Over the last couple of weeks known control issues include: one helicopter crash, three planes crashed, one quad-copter loss of control and one quad-copter lost in the hills.  The lost quad was possibly due to interference. This prompted me to have another look at […]


RC Fighting Tank – frequency changes

Can the control frequencies be changed to allow more than 2 tanks to operate at the same time? These are supplied in pairs, one on 27MHz and one on 40MHz. Conclusion Not practical; without finding out about the receiver IC, ABERX69A. Google returns no info. Transmitter The transmitter uses a […]

rc battle tank

fpv transmitter with antenna and osd

Testing a 10mW 5.8GHz FPV transmitter

Buying Antennas – the first mistake I got a couple of these TS350 10mW 5.8GHz FPV transmitters from Hobbyking and a set of these circular polarized antennas with SMA connectors (pin centre). These were the wrong antenna connectors, I should have got the RP-SMA (hole in centre) type; these. Because […]


Cubieboard – first impression

Would I recommend Cubieboard No, probably not. Having one of these reminds me of the early days of the IBM-PC; except these are cheap and the early PCs cost a small fortune. What is the same is that you could spend a lot of time on it and almost but […]

Cubieboard V1

Thermal sensor

RC gliding thermal air current sensor and display

Thermal Hunting Subtle air temperature changes that indicate thermal activity are indicated on a meter or display to be interpreted by the pilot of a RC glider, or to suggest when to launch a free-flight model. Operation Erect the pole and turn it on (or in the other order if […]


New low-cost tablet repaired

Noisy whistle from the back This is a brand new 9.7″ Android tablet purchased via our local New Zealand on-line auction site, Trademe for about NZ$160. 9.7inch Allwinner A20 Dual core \1.5 Ghz, 1GB DDR3, 8GB NANDandroid 4.2 IPS From first power-on it made quite a loud high pitch whistling […]

10" tablet

Wordpress login-admin

Why use a CMS for a website – WordPress

Content Management System – CMS WordPress is a CMS, basically a group of PHP and other files running on web server and using a MySQL database. WordPress is apparently the most popular blogging system, used for small simple private web sites through to large complex corporate sites. PHP is a […]