It has been a while since i posted my Tinker Rule which i made during college days. I received a few requests for the ready to etch pdf which helped me gauge if this seemed to be useful to people. The response was somewhat positive and so, i decided to put in some extra effort […]
Maker’s rule, the feature packed PCB multi-tool Continue Reading
DC Output Solid State Relay 10Amps 60V DC (Optically Isolated Input) This project has been designed around TLP250/352 which is Opto-Coupler IGBT/MOSFET Gate Driver from Toshiba and Mosfet IRFP260 from IR, This relay consists of optically isolated gate driver and low impedance Mosfet. The combination of low resistance and high load current handling capabilities make
This Instructable documents how to create a simple heart rate monitor using Photoplethysmography with an IR phototransistor via transmissive absorption using the Arduino to process the pulsatile data and display live results via a TFT screen. To use the source code and create the necessary circuitry you will need a reasonable grasp of electronics, knowledge
Photoplethysmography – IR Heart Rate Monitor Continue Reading
Update! Here is a post with the BOM for the project. Sometime ago I came across the Arducam Mini which is quite a nice camera module from UCTronics. It is a small PCB with a two megapixel OmniVision OV2640 sensor, an interchangeable lens and an FPGA to do the heavy lifting of image processing and JPEG
Hi everybody, my name is Michiel and I am going to show you how to make an awesome looking laser engraver! A couple of months ago, there was a CNC challenge here at instructables, while checking out the entries of that contest, I saw some pretty cool engraving machines and I thought: “Why shouldn’t I
What if you could cure blindness as easily as turning on the lights? That’s what one doctor and his team are hoping to achieve with a clinical trial that uses a new form of retina implant to return sight to patients who have lost the ability to see. And for one of the six patients,
A new form of retina implant returns sight to the blind Continue Reading
A new “all-climate” lithium-ion battery can rapidly heat itself to overcome freezing temperatures with little sacrifice in energy storage capacity and power, researchers say. This advance might enable applications for which high-performance batteries are needed in extremely cold temperatures, such as electric cars in cold climates, high-altitude drones, and space exploration. EC Power is now
Lithium-Ion Battery Warms Up, Operates In Subzero Temperatures Continue Reading
Among my recent electronics purchase spree was the amazing Teensy LC from PJRC. It has a nice ARM Cortex-M0+ processor, real hardware USB, and what’s the nicest part, an Arduino add-on called Teensyduino which enables easy programming with Arduino, but with support for many of the hardware features. Now I started playing piano a while
This week I have been working on another of my standard footprint 50mm x 50mm boards – it is a general purpose wireless module carrier board:- Fobble. That’s a BLE Fob – for anyone who misses the pun. In the last few weeks there have been a number of applications arise – that could easily
Fobble – A general purpose Wireless Breakout Board! Continue Reading
This a door lock built as fun project. It is quite easy to build and a fun way to learn and improve your knowledge of Arduino. I tried to add a 16*2 display but there weren’t enough GPIO pins on Arduino Uno. If You are interested in adding a display you would need an Arduino
