About: Ibrar Ayyub

Did this DIY Hand Dynamometer as a sensor for PICAXE micro-controller. It also can be use for Arduino or any micro-controller too. List of the materials I used to make Hand Dynamometer : 1) Hand Exerciser from Amazon – 1 pc 2) Flex Sensor 2.2″ from Amazon – 1pc 3) Some cable ties 4) Wires […]

The Goals Sometimes you need to check one circuit and test some of its nodes. Usually a tester in voltage mode is a good solution, but it has a pair of problems. First, it measures about zero both when the node is driven at zero volts and when the node is floating (not driven at […]

This is our 10th tutorial of Learning PIC microcontrollers using MPLAB and XC8. Till now, we have covered many basic tutorials like  LED blinking with PIC, Timers in PIC, interfacing LCD, interfacing 7-segment, ADC using PIC etc. If you are an absolute beginner, then please visit the complete list of PIC tutorials here and start learning. In this tutorial, we will learn How to […]

Introduction This circuit is a repeater for GPS data. It is intended to connect to Garmin-38 (and similar) hand held GPS receivers that don’t have external antennas. The purpose for the repeater is to allow the GPS to be outside, exposed to the satellite view, and allow the user to see the data below decks […]

Lumileds is competing against multiple miniature LED packages with an device that emits 400lm from a 4.8mm diameter circle for spotlights. “We are providing a high flux, high efficacy LED that improves the quality of light and avoids the ‘showerhead effect’ with distributed, multi-die solutions,” said product manager Ahmed Eweida.Called Luxeon 5258, it comes in […]

In this post we introduce simple and flexible, regulated low voltage power supply unit. This power supply has provision for 4 outputs such as 1.5V, 1.8V, 2.5V and 3.3V. We mainly build this low voltage power supply unit to test (and power-up) low voltage MCUs, CPLDs and radio receivers. For this power supply we choose […]

This is our 11th tutorial of Learning PIC microcontrollers using MPLAB and XC8. In this tutorial we will learn How to control Servo Motor with PIC Microcontroller. If you have already worked with Servo motors you can skip the first half of this tutorial but if you are new to servo motor itself then continue […]

@ device pic16f877 define osc 4 define adc_bits 8 Include “MODEDEFS.bas” DEFINE ADC_SAMPLEUS 100 DEFINE SHIFT_PAUSEUS 100 ADCON1 = 7 TRISA =$ff trisb =$00 ‘=======output=======’ dat vAR portb.0 clk vAR portb.1 latch vAR portb.2 relay VAR portb.3 ‘======input=========’ enter vAR porta.0 chg VAR porta.1 hour var byte minute var byte second var byte prsc1 var […]

In this tutorial we learn to Enable UART communication with PIC Microcontroller and how to transfer data to and from your Computer. So far, we have covered all basic modules like ADC, Timers, PWM and also have learnt how to interface LCDs and 7-Segment displays.  Now, we will equip our self with a new communication […]

@ device pic16f877 define osc 4 define adc_bits 8 adcon1 = 7 trisa = $ff trise = $00 trisc = $00 trisd = $00 digit var byte num var word disp var byte num =00 while(1) digit = num dig 0 lookup digit,[$3f,$06,$5b,$4f,$66,$6d,$7d,$07,$7f,$6f],disp portd = disp high portc.0 pause 5 low portc.0 digit = num […]