Building my own Arduino: shrimp and ArduinoISP

A few days ago I wrote about a “learning timer” that I had built using an Arduino Uno. Arduino boards are pretty easy to come by, and also easy to work with, but can be a bit expensive to build in to things (a genuine Arduino Uno from the manufacturer will set you back 20 …

Continue reading ‘Building my own Arduino: shrimp and ArduinoISP’ »

Back to soldering

Yesterday morning my car was at the garage for a service, so I took the morning off work rather than struggle in using public transport only to come straight back again to pick it up. I took the opportunity to break out the soldering iron and construct some Raspberry Pi boards, one of which has …

Continue reading ‘Back to soldering’ »

Raspberry Pi and RFID

A few years ago I did some work on a project which used RFID (Radio Frequency IDentification) to do all sorts of cool things. There were several problems with this, though. The first was that even high-quality UHF RFID readers and antennas would sometimes struggle to see and recognize the “tags” we had attached to …

Continue reading ‘Raspberry Pi and RFID’ »