Electric Guru: noise 14
Its pretty interesting to measure ones heart beat. A lot of fancy analog circuitry is needed for this. But fortunately there is a Arduino shield for this: the SHIELD-EKG-EMG from Olimex. Hardware: – EKG/EMG shield (price: ~24€), Manual: [Link] -SHIELD-EKG-EMG-PA – passive electrode for SHIELD-EKG-EMG shield (price: ~12€) -Olimexino-328 – […]

ECG: measure your heartbeat

Introduction During the last weeks I upgraded my solar-usb-charger system. Here you can find the original design: (german article). What the old design basically did was converting the 12V DC from the solar powered battery system to USB friendly 5V DC. New Features I added a couple of features: […]

Upgrade: Solar-USB-Charger

I have a couple of new pcbs in development. Firstly there is the lightning-sensor-shield. It uses a AS3935 sensor from AMS to detect lightning. I’m pretty excited to get this one running. Then we have a power LED nano shield. You plug it onto an Arduino Nano. It’s possible to […]

new pcbs: lightning shield, current shunt monitor, …

Today I would like to introduce you to a nice Arduino Duemilanove clone, the OLIMEXINO-328 from Olimex. It has been kindly provided by Some information about the board can be found here: OLIMEXINO-328 manual: OLIMEXINO-328 schematic: Link to product page: The board is fully compatible with […]

OLIMEXINO-328: the better Arduino?