Usb solar panels are difficult things to test unedited
What could possibly go wrong when you're trying to test a USB solar panel? Lots of things. Cloud (of course),…
Julian’s ardutorials: arduino stripped naked
A breadboard Arduino stripped right down to its bare essentials. Actually stripped down a bit too far - I've been…
1-way teardown: maplin 5w solar camping light/fan
Maplin were selling this strange solar charged battery powered fan and light unit a few years ago for less than…
First look: banggood hisky hmx280 cc3d quadcopter
A first look at the HiSky HMX280 Quadcopter supplied from Banggood. Link to this item on Banggood website: http://bit.ly/1FXn62w Note:…
Julian sucks: failed arduino uno repair – rescued!
This video was inches away from being deleted. This happens from time to time - the video starts well and…
Julian builds: a solar panel frame for the winter #2
Construction of a free-standing frame to hold my solar panels at a height and tilt angle suitable for the coming…
Julian’s builds: a solar panel frame for the winter #1
Construction of a free-standing frame to hold my solar panels at a height and tilt angle suitable for the coming…
1-way teardown: casio tv-30 lcd pocket television
Destructive teardown of the frankly awful Casio TV30 black and white liquid crystal pocket television. But not before a final…
Julian’s ardutorials: max7219 7-segment led display arduino
Arduino tutorial on driving the MAX7219 7-segment 8-digit LED module Arduino code: http://hastebin.com/axovofapag.coffee
Julian’s postbag: #48 – mppt solar buck regulator led display
An interesting little buck converter with dual LED display which claims to have an MPPT function. Unfortunately the frustrating British…