Wireless

DIY Bluetooth accelerometer

DIY Bluetooth accelerometer

College Of Computing @ Georgia Tech have a great DIY Bluetooth accelerometer, source and schematic included — This is a small wireless sensor platform providing a bluetooth SPP link to three axes of accelerometer data. The accelerometers are sampled by a PIC microcontroller (onboard ADC) at roughly 100Hz (rate can be changed via firmware). Data […]

DIY iTrip Amplifier

DIY iTrip Amplifier

Cody writes – I purchased an iTrip off eBay for $30 shipped. I wasnt expecting it to work good due to the many negative reviews I have read about it. I started off by pulling the antenna out of the case for a better signal. It did increase the performance, but not enough. I found […]

Backpacking battery pack

Backpacking battery pack

Doug made a simple battery pack for Ham radio’ing while backpacking, it’s housed in a giant Altoids tin, he writes – “I have a 10 cell ‘AA’ NiMH battery pack (12V @ 1.6AH) that I use for backpacking. It needed a home! I also wanted a voltmeter built-in so I could keep track of it’s […]