About: Ibrar Ayyub
Posts by Ibrar Ayyub:
PIC32 Multimedia Expansion Board Review Video
Posted on: 16 Jun 2017
Review of the Multimedia Expansion Board for the PIC32 Start Kits from Microchip. In this review I’m going to show the board and it’s periphirals, and then I will show a couple of demostration applications.
Teardown: 12V AC adapters – The Horror
Posted on: 16 Jun 2017
First on the chopping block, the “EH1205”. Wait! What’s this? The original AC connector is mounted to the PCB. Yes, this has been repackaged! I think we can assume the approvals on the label are fiction. The current rating sure is. Note the ~5mm spark-gap in the upper left (~15kV?). Yes! Can you believe […]
Build a PIC controlled DDS VFO, 0 to 6 MHz using pic microcontroller
Posted on: 16 Jun 2017
Files contained in MINIDDS.ZIP: readme.txt Read this first! compplac.pdf Component placement in PDF format schema.pdf Schematic diagram in PDF format top.ps PCB top copper layer in Postscript format bottom.ps PCB bottom copper layer in Postscript format ad9832_4.asm PIC assembly source code p16f84.inc Needed for assembly of ad9832_4.asm (for ‘F84) p16c84.inc As above but for ‘C84 […]
PIC 18F4550 Motor Controller Video Project
Posted on: 15 Jun 2017
In this video, we cover how to breadboard and write the firmware for a motor controller (controlling a servo, 2 DC motors, and a stepper) with the PIC 18F4550. A few notes on this video: -I recorded most of the video during the evening of July 4th here in the U.S., there were fireworks going […]
IV Curve Tracer
Posted on: 15 Jun 2017
*** Do not attempt this project if you are not comfortable working with line voltages! *** This projects shows how to create an IV (Current and Voltage) Tracer that can be used to teach the electrical characteristics of a solar panel. This project was created as part of an Electrical and Computer Engineering capstone project […]
LM386 based stereo audio amplifier with digital volume control
Posted on: 15 Jun 2017
Due to its simplicity (requires minimum external components) and high availability, LM386 is very popular among hobbyists for use in low-voltage audio amplification applications. Most of the time a potentiometer is used at the input side of LM386 to provide a volume control in the output speaker. The potentiometer does not control the gain of the […]
Qi introduces predictive sensing
Posted on: 15 Jun 2017
Quantum Interface (Qi) of Austin, Texas has come up with a predictive navigation interface which is responsive to motion, analysing the speed and direction of any input to determine user intent. It is offering beta versions of an app using technology. When a user moves toward a menu selection with a finger on a touchpad, […]
A video game with software generated video signal !
Posted on: 14 Jun 2017
Introduction I have made the game pong using a pic 16F84 running @ 12MHz. The game Pong was the world’s first video game in the early 70’s, this is a modern version of it, made with a little bit less hardware than the original version. In my version, the video signal is generated in software. […]
USB curve tracer for NPN transistors
Posted on: 14 Jun 2017
Curve tracer is an electronic test instrument to analyze the characteristics of transistors and other discrete semiconductors. In this post we construct USB base curve tracer to analyze properties of NPN transistors. This curve tracer is build around Microchip’s PIC18F4550 MCU and it use simple Windows based GUI application to plot captured data of a […]
Reflow toaster oven using an Arduino
Posted on: 14 Jun 2017
A reflow oven comes in handy when you work regularly with SMT circuits. I’ve had the T-962A reflow oven for about a year now. While it has worked reasonably well, recently it has started showing some signs of aging. First of all, the total reflow time is quite long, about 15-16 minutes. This is really […]
