About: Ibrar Ayyub

WCH, a Chinese integrated circuits manufacturer, has just released a new serial to USB chip called CH340E. Unlike other CH340 chips, it doesn’t require an external crystal and also needs less PCB space and BOM. CH340 is a 3x3mm tiny chip comes in MSOP10 package and has 10 pins. Although it is smaller than other alternatives, it is a […]

n the Moore’s Law race to keep improving computer performance, the IT industry has turned upward, stacking chips like nano-sized 3D skyscrapers. But those stacks have their limits, due to overheating. Researchers from IBM have solved this problem by developing an intra-chip cooling system as a contribution to ICECoolprogram research project by the DARPA (Defense Advanced Research Projects Agency). Today, chips are typically cooled by fans […]

A new and improved PCB spiral Teslacoil. This Teslacoil has etched windings on a print circuit board. It  has a USB interface which also powers the coil. The resonance frequency is about 4MHz. It has a turns ratio of 1:160 with 6mil tracks for the secondary. The total trace length of the secondary is 25m. […]

Jumbo 20 Segment SPI (Serial) bar graph driver using 74HC595 serial to parallel converter IC and BC635 display driver transistor. This project is useful for application like Amusement machines, arcade gaming, voltage display, current display, pressure sensor display, temperature sensor display , process control equipment, battery condition monitor and many more. Each segment of display […]

DESCRIPTION A smart, programable Fidget Spinner with the following features: * JavaScript programmable * 10-Pixel RGB PoV display (using APA102 LEDs) * Spin count / speed detection using a magnetic latch * Using Nordic Semiconductor nRF52832 chip * Bluetooth Low Energy (BLE) communication with smart phone / computer for controlling the display, reading the spin […]

A 4-port upgrade to the original NanoHub; an entire 4-port USB hub that is smaller than a USB connector The NanoHub 4-port is a natural evolution of the original 2-port NanoHub – a truly tiny USB hub to use in the most cramped of spaces. Nanohub 4-port is bigger and better! Even though it boasts twice as […]

I’m a fan of all kind of weather stations. When Daniel Eichhorn twittered about his new version using an E-Paper display module, I immediately preordered one. I decided to build a station with a custom enclosure, so here is my version of a 3D printed version, featuring magnets so it can be attached to the fridge: Using […]

Bosch Sensortec announces a world first in sensor technology: the BME280 Integrated Environmental Unit combines sensors for pressure, humidity and temperature in a single package. This unique sensor has been developed to support a broad range of emerging high performance applications such as indoor navigation, home automation control, personalized weather stations and innovative sport and […]

Imagine you have a window that isolates noises and passes only nature sounds like sea waves in addition to fresh air. Seems like it will happen in dreams only, right? Actually, researchers from South Korea, bring this window from dreams to the real. Soundproofing is difficult and expensive, it usually relies on transferring sound into a medium […]

  Lithium-ion batteries are flammable and the price of the raw material is increasing. Scientists and engineers have been trying to find out a safe yet efficient alternative to the Lithium-ion technology. The researchers of Empa and ETH Zürich have discovered promising approaches as to how we might produce powerful batteries out of waste graphite and scrap […]