About: Ibrar Ayyub

A microcontroller is a self-contained, but very limited computer — halfway between a computer and a component. The top reasons to integrate a microcontroller into your projects are connectivity and interactivity, and one easy way to get your microcontroller talking with the outside world is standard asynchronous serial I/O. Many devices can communicate this way, […]

his is a preliminary instructable that will take you through the steps I took to get the SR04 ULTRASONIC SENSOR  connected  and working to the Arduino. It will then be incorporated to my mini environment monitor.  Eventually, if it all fits, it will end up in a Startrek  toy tricorder casing I found in my […]

OK, this is not a fully autonomous “get you a beer, open it for you and then tweet about it” robodog (yet 😉 but if you’re itching to get past the blinky lights on a breadboard stage with your Arduino and you’re ten or know somebody that’s ten this might appeal to you. This is […]

With very few exceptions, every electronic circuit needs an oscillator, also referred to as a clock, clock generator, or timing circuit. Its role is to provide the “heartbeat   For more detail: MEMS Oscillators Challenge Quartz Crystals in RF Applications

For an upcoming project I needed a pneumatic ram with a closed loop control system so I could position it accurately. Didn’t have the budget for an off the shelf solution, so I bodged one together with an ardunio, a couple air solenoid valves, and a pair of potentiometers. How it works is one potentiometer […]

Change list 26 Jul 2015 – added rework instructions for those who want to do it themselves 21 Jun 2015 – new software version to add optional (but default) whitening support between the OneRNG and rngd 20 Apr 2015 – new software version to support another issue with firmware verification – if your board was […]

An h-bridge is a chip that allows DC motors to be run versatile, with bidirectional capability. With an H-bridge, motors can go forward or backward, left or right, up or down, etc, depending on the use of the motor(s) in the circuit. Without a microcontroller, the only way to be able to control an H-bridge […]

This device was built at Recursive Software Development Labs in order to be mounted on a rally car competing in the Estonian National Rally championship. The racing team needed help realizing a reliable measurement device which would output the currently inserted gear on a large, bright led display. The biggest challenge to overcome was that […]

The other day I wanted to experiment with external triggers for my Canon EOS 550D camera. I stumpled upon a nice open source project called Arduino Camera Control from Oleg Mazurov, the creator of the USB Host Shield library for Arduino. The Arduino Camera Control project depends on the USB Host Shield library and the […]

Main features CPU Atmel AT91SAM9G25 SoC (ARM9 @ 400Mhz) DDR2 Ram 128 or 256 MByte Power supply: 5VDC via microUSB or 3.3VDC using the PCB pads Line levels: TTL 3.3V (NOT 5V tolerant) Operative temperature range: ARIETTA-G25 (128MByte RAM): -20 +70 °C ARIETTA-G25-256 (256MByte RAM): -0 +70 °C Size: 53x25mm PCB layers: 8 RoHS and […]