About: Ibrar Ayyub
Posts by Ibrar Ayyub:
Remote Control Server
Posted on: 15 Sep 2017
One of my friends asked me if I could design a circuit for him to be able to remotely power up a server. He has 2 servers and he didn’t want to keep them both on whilst he travelled. He wanted to be able to turn on a server when he needed it. He has […]
Factory programming ESP8266 gadgets
Posted on: 15 Sep 2017
The FTDI connector can be found on just about any ESP8266 design. If you are building a gadget to be deployed somewhere and not a full blown development board, the FTDI connector is somewhat overkill. And it is quite large. A few pins could be shaved off but we still have a through hole connector invading […]
MIDI Chord Button Keyboard Using PIC18F4620 part 3
Posted on: 15 Sep 2017
Connections The following table documents the connecting leads and molex pin-header numbers tying the various interfaces together. Header Pin no. Signal/Function Direction Header Pin no. Signal/Function Chord Controller-SV1 1 RD7 ——> Matrix Decoder-SV4 1 Chord Sel. C Chord Controller-SV1 2 RD6 ——> Matrix Decoder-SV4 2 Chord Sel. B Chord Controller-SV1 3 RD5 ——> Matrix Decoder-SV4 […]
POV Christmas Tree using PIC12F689 microcontroller
Posted on: 14 Sep 2017
POV Christmas Tree Still don’t have a tree for this holidays?, Don’t worry here you have a small, reusable, eye-catching tree for your holiday needs. This project started as a SMD soldering tutorial for a course i’ve made in electronics, so it’s meant to be a one day project to learn a little bit of […]
Heat Activated Cooling Fan Controller
Posted on: 14 Sep 2017
Heat activated cooling fan controller is a simple project which operates a brushless fan when the temperature in a particular area goes above a set point, when temperature return normal, fan automatically turns off. The project is built using LM358 Op-amp and LM35 temperature Sensor. Project requires 12V DC supply and can drive 12V Fan. […]
Serial Addressable RGB PWM LED Driver using PIC16F628A
Posted on: 14 Sep 2017
Overview Ever since I made the serial controlled RGB LED PWM driver I’ve had many requests for an addressable driver. Well I’ve finally got round to producing one. The code is now completed and tested and the prototype boards are fully working. The design process behind this project was to enable anyone with a bit […]
Easy Debugging Terminal using PIC16F84
Posted on: 13 Sep 2017
Introduction This LCD terminal provide two modes of operation by selecting jumper J1. When J1 is open the terminal operate as a normal ascii display terminal, when J1 is closed the terminal displays the input serial data in hexadecimal format. This mode is useful for viewing raw data from the serial port output. Hardware Figure […]
Limiting Inrush Current
Posted on: 13 Sep 2017
Inrush current or input surge current refers to the maximum, instantaneous input current drawn by an electrical device during its initial turn on. Power converters also feature high inrush currents relative to their steady state currents that may be several times their normal full-load current when first energized. The inrush current of a power converter […]
Simple Ham Radio Bluetooth Interface
Posted on: 13 Sep 2017
Ham radio is a popular hobby and service in which a licensed amateur radio operator explores communications equipment. Typical ham radios do not have bluetooth support, which may be hassle for some. None of the transceiver manufacturers are providing a wireless interface. However, with this ham radio bluetooth interface, communicating and listening to other entity […]
World’s Smallest Low-speed USB Analyzer using pic16f877
Posted on: 12 Sep 2017
[Any] idea is dead without a good application for it. So “California Dreamin’” USB virtual peripheral could be a very nice sample of academic research, but hardly anybody is going to build a keyboard or mouse using it. I have been thinking for a while what to do with it as well. First project that […]
