About: Ibrar Ayyub

How to drive a lot of LEDs from a few microcontroller pins. Using the fact that many microcontroller pins have three states (+V, GND, or “high impedence”, you can drive N*(N-1) LEDs from N pins. So the little 8 pin microcontroller like a PIC12Fxxx or an ATtiny11 can drive 20 LEDs on its five available […]

Step 1: Parts List General: RC transmitter/receiver set with at least 3 channels. As is this code only works with stacked PWM signals. I can only say for sure that it will work with traxxas receivers. With modification it could work with any PWM timing, and I am working on making it work with synchronous […]

If you love finding solutions that could widen horizons – that is something you will like! I wanted to know what my next ESP projects could connect to – and I decided to look for some open WiFis ….  That is the result after two days programming – and 45 min walking arround. Only for testing this […]

A logic probe is considered as a stethoscope for engineers and technicians for debugging digital logic circuits that consists of logic gates, memories, registers, etc. A digital multimeter (DVM) can also be used for such analytical purposes but it gives you the numeric value of the voltage at a point instead of the logic state. […]

Brief: The Message Pump A.K.A. the USB to LCD Backpack is a device that allows you to connect a LCD display directly to your computer. It uses a PIC micro-controller, to drive the LCD and a FTDI USB to serial chip to connect to your computer. The great thing about the FTDI chip is that […]

Features Enhanced Mid-Range Core with 49 Instruction, 16 Stack Levels Flash Program Memory with self read/write capability 256 Bytes of EEPROM Internal 32MHz oscillator 3 x PSMC (Programmable Switch Mode Controller)- Dedicated 16bit PWM- Digital and/or analog feedback control of PWM frequency- Dead-band control / auto-shutdown & restart 4 x Fast Comparators with selectable Voltage […]

Kemet and Novasentis, developer of haptic and sensory feedback technology for wearable devices, have announced a collaboration to develop next generation Electro-Mechanical Polymer (EMP) film based haptic actuators for wearable devices. Novasentis will provide the core technology and haptic actuator film whereas Kemet will develop the manufacturing process for the final assembly. Production prototype delivery […]

The objective of this project is to illustrate a technique of implementing adaptive brightness control to Smart TrH Display and seven segment LED displays. It consists of a closed loop system that continuously assesses ambient light condition using an inexpensive light-dependent resistor (LDR) and uses that information to adjust the brightness of the display. For […]

LED Infinity Mirror Controller, 32 LEDs, Multiple Patterns UPDATE: This kit is discontinued please see the new version, 8 Channel LED Controller v.3, the development files are still available to build this version. As simple a circuit as can be. A 12F675 controls a high-power shift register, which in turn controls up to 48 LEDs at 20ma […]

This post provides the code for interfacing 24LC64 EEPROM with PIC12F675 microcontroller. This 24LC64 EEPROM has i2c based interface and PIC12F675 doesn’t have any built in i2c modules, so software i2c module is created in the code. This code is written in C language using MPLAB with HI-TECH C compiler. You can download this code from the ‘Downloads‘ section at […]