Introduction The aim of this project was to produce a portable ECG monitor that displays the ECG signal of an Einthoven triangle configuration of electrodes (3 leads). The motivation of this project comes from the pervasiveness of cardiac problems in the world, which cause the highest number of death, as well as the relatively uncommon […]
Single-Supply Portable ECG Monitor Read More »
A new research initiative between the University of Washington’s Sensor Laband the Technical University of Delft in the Netherlands has created a microprocessor that can power itself through stray radio waves and receive programmable updates in the same fashion. While the RISC-derived 16-bit microcontroller CPU is very weak compared to modern standards, it’s much more powerful than any other device
WISP – RE-PROGRAMMABLE MICROCONTROLLER THAT RUNS ON ENERGY HARVESTED FROM RADIO WAVES Read More »
A popular power source for portable devices is a single lithium-ion cell with 4.2V at full charge and 2.8V at end of discharge. However, some functions within portable electronics, such as a SIM card and DSP, require 2.8V and 3.3V. These are normally provided by low noise LDOs. The LDOs inputs (VCC) must be at
Choose the right step-up/down voltage regulator for portable applications Read More »
A BIG HELLO! and welcome to Mixed Outputs first instructable. As most of my project involve electronics of some sort, having a good power supply is essential to be able to meet the demand of different power requirements. So I built me a bench-top power supply from an old ATX power supply Unit (PSU) that
Portable Adjustable Mini Powersupply Read More »
I have built a GPS Logger and it works very well to trace the drove route for two years. By the way, the navigation solution computed by GPS receiver itself has an excellent accuracy without DGPS because an intentional offset added by US goverment has been stopped several years ago. The position error seems to
Portable GPS Data Logger Read More »
