Ebay cheap: $0.75 electronic doorbell kit ne555
A very cheap electronics kit bought on eBay for just 50p. It makes a nice two-tone sound. But there were…
Diy supercapacitor: business card version – success :
My version 2 electric double-layer capacitor is a success. It measures 64uF on my DMM. Yay!
Diy supercapacitor: tart tins version – fail :
It started well, but this homemade capacitor only worked once, then failed.
Electronics to go: smokin’ bicycle lights
Smoke and fire (well not fire) when I overvolt these cheap bicycle lights which have overstayed their welcome.
Ebay cheap and cheerful: #4 – led fashion watch
Cheap LED watch. Interesting enough to get a cheap and cheerful title. New Men Womens Fashion Silicone Red LED Sport…
Teardown: dettol ‘no-touch’ hand wash system
Not an easy teardown. I made numerous assumptions which turned out to be wrong. Reminded me of my field servicing…
Julian’s postbag: #66 – a load of electronics stuff from alice
Lovely electronics stuff from eBay seller Alice1101983. Become a Patreon patron and support Julian's Postbag videos on YouTube - https://www.patreon.com/julian256?ty=h…
First look at the bbc micro:bit
First look at the BBCs single board computer which is being given to all 11-year olds in the UK. http://www.microbit.co.uk
Solar charge controller leak detection
Using printer ink to find out how moisture is getting into my solar charge controllers.