GroClock update 1

Quick update – I have been looking at which processor to use and which Wifi module. I was considering using a Bluetooth module but that would have meant developing an iPhone /Android app which just adds to much to the project. So have decided to use a Wifi...
Schmitt Trigger Oscillator

Schmitt Trigger Oscillator

The Schmitt Trigger Inverter oscillator is a very simple oscillator which can be useful but is also not very accurate or stable. Pros Easy and simple circuit Easy timing calculation Useful for not critical oscillations or clock signal. Cons Subject to frequency...
Microsoft Surface Pro 4 Repair

Microsoft Surface Pro 4 Repair

I was given a Surface Pro 4 to repair and was told that the user stood on it and hence the screen cracked. However…. once I managed to open it (something that was far more difficult than I would have hoped for) I realised that actually, cause of the cracked...
First computer experience

First computer experience

My very first memory of a computer was at a friends house when I was about 7 or 8 years old (in South Africa). In the lounge was a glass cabinet with a homemade computer, screen and keyboard. I clearly remember it. It had a white (or more grey) monochrome monitor...