29 May 2015

MacBook Pro battery - not a happy end

›
Once charged, the 3S(eries)2P(arallel) Li-po pack from a MacBook Pro, was not too keen to keep the top voltage. Each cell parallel slowly...
26 May 2015

MacBook laptop battery teardown and recycle

›
A MacBook laptop battery pack came into my hands. Pretty old stuff from 2006, but Li-po, rated at 60 Wh. Maybe I am about to get a new bat...
18 May 2015

It's IoT time! Wireless online thermometer with ESP8266 and DS18B20

›
IoT, Internet of Things, is not rocket science anymore. Grab an ESP8266 WiFi module, a USB-to-serial adapter and few wires later you are pro...
10 May 2015

PowerBook G4 ambient light

›
The Apple PowerBook G4 was a powerful laptop ... in year ~2002. I was given a non-working 12" unit in case I could salvage some parts ...
29 April 2015

Pixie kit - I give up

›
I have checked everything 10 times. I have removed key components. Nothing. The 40m Pixie kit oscillator does not start, unless the var...
28 April 2015

Pixie kit - does not oscillate

›
The 40m Chinese Pixie replica does not work. The oscillator does not start. Can't get simpler than this. Besides some capacitor valu...
24 April 2015

Battery upgrade for electronic keyboard

›
As most families with children, we happen to inherit toys and alike. We got an electronic keyboard (musical instrument) called "Miles E...

Pixie kit - so cheap because ...

›
While buiding the cheap Pixie kit I came to a dead spot when placing few capacitors. So I did few investigations. First of all, the 10uF f...
2 comments: