About: Ibrar Ayyub

Introduction I assembled my Geiger counter kit from MightyOhm some time ago. It’s a very fun kit and the finished counter looks awesome. Oh, that Geiger-Muller tube sitting on that yellow PCB! I’ve always wanted to modify it somehow and add functionality. Today I realized that an Adafruit Feather sits PERFECTLY where the AAA battery […]

Here’s the minimal code to make timer 1 (a 16 bit timer) work using PICBasic. General descriptions of PIC timer variables used to control the timer: (you should be able to use these no matter what programming language you use): T1CON.0 is the first bit of the timer configuration byte, this bit is used to […]

Description This software functions as a long period astable mutivibrator.  The mark and space period can be set from 1 second up to a maximum 65535 seconds (18h12m15s). Using the internal 4Mhz RC oscillator delays with an accuracy of 99% or better can be achieved  The code also implements an edge triggered reset and an […]

Voltmeter Ammeter is a great kit to measure voltage and current at the same time. It measures 0-70V or 0-500V voltage with 100mV resolution and current from 0 to 10A. It’s a perfect addition to any power supply, battery chargers and other electronic projects where voltage and current must be monitored. Kit uses PIC16F876A microcontroller […]

Features Complete Low Power Wireless NiMH Charger Low Minimum Input Voltage: 2.2V Small Total Solution Volume 1.5V, 25mA Linear Single-Cell NiMH Charger Temperature Compensated Charge Voltage Integrated Rectifier with Overvoltage Limit Zinc-Air Battery Detection Reverse Polarity Protection Thermally Enhanced 6-Lead (2mm × 2mm) DFN package Typical Application Description The LTC®4123 is a low power wireless receiver […]

Adding a Digital Meter and Functions to Analog Geiger Counters The Digital Meter Adapter is a expansion module for adding digital functions to Analog Geiger Counters that have a pulse output. If you’re geiger counter outputs a ttl pulse for every radioactive particle it detects, your Geiger counter will connect to Images SI Inc.’s DMAD […]

If you want to know more… If you want to know more about ATtiny85 microcontroller and how to upload sketches to it, you may have a look to ATtiny85 vs ATmega328. About TinyWireMCP23008 was tested (and works) with a 8 MHz ATtiny85 and I2C standard bus mode and I2C fast bus mode. TinyWireMCP23008 was not […]

 Displaying content on a normal alphanumeric display is very limited ,we have to be limited with the font size and we can’t draw any graphics also. but convention Graphics lcd are really very expensive so here is the solution, you can use Nokia 1100 monochrome  LCD to display your large font text and graphics . […]

The serial port of the PC is a very important resource both in industrial environment and in home-made electronics, due to the wide popularity of the UART interface which is to be found on many microcontrollers or on many test and design instrumentation (programmable power supplies, multi-meters, oscilloscopes etc). Even if modern-day computers tend not […]

Presented is a simple temperature alarm which uses a PIC16C84 microcontroller and a 2-line LCD display. The alarm displays current temperature in both Celsius and Fahrenheit degrees and features a 3-key keypad which allows the user to set independent high and low termperature alarm points. The alarm also records the minimum and maximum temperatures encountered. […]