Micro JTAG adapter
I was annoyed with bulky and expensive JTAG adapters for ARM Cortex-M development. So I built one that’s small, cheap and works with all the IDEs I use (LCPExpresso, Crossworks & Keil).
The Micro JTAG has an NXP LPC11U35 microcontroller and implements ARMs CMSIS-DAP protocol - I took huge parts of this code by micromint. It’s also a USB-Serial adapter. The board was made by OSH-Park. Three of them were just under 3$ including shipping, because they’re so small.
A failed attempt to create wearable technology
This is something I made lately. It is an armband that you can wear on your upper arm. It contains a battery, a Nordic Semiconductor bluetooth LE chip (NRF51822), a battery, a 9 degree motion processing unit, a lithium polymer battery and 6 vibration motors. It is supposed to give you a constant sensory input about which direction is north.
I read a paper about this some time ago and according to the research the human brain can adapt to new sensory input very fast. So in theory someone who receives constant input of an absolute reference point for ‘north’ via the vibration motors that are arranged around the arm should get a better sense of orientation without really thinking about it.
The only downside is that it does not work the way I designed it…
I was playing with a laser cutter lately and this is the outcome. A robotic lamp that follows your movements with an optical flow sensor from a computer mouse and an ATMega 328.
I’ll release the files and schematics when I’ve fixed a few mechanical bugs.
Heres a video: https://vine.co/v/bUzYzEmiKLK
A nice little appliance that displays up to 8 different metrics. Powered by a Raspberry Pi.
This is a cheap electronic name badge that can be programmed with the arduino ide. I built it for events like barcamps at the attraktor makerspace.