About: Ibrar Ayyub
Posts by Ibrar Ayyub:
Open-source ELM327 OBD adapter
Posted on: 16 Apr 2017
The adapter allows you to interface with your car’s OBD-II bus. It provides you a serial interface using the ELM327 command set and supports all OBD-II standards: SAE J1850 PWM SAE J1850 VPW ISO 9141-2 ISO 14230-4 ISO 15765-4 CAN Hardware The adapter kit schematic is shown here. It is built around NXP LPC1517 Cortex-M3 […]
16F628A Microcontroller development board
Posted on: 16 Apr 2017
Description This project is a versatile, configurable, and cost effective development board available for the 16F628A or other 18 PIN Microcontroller from Microchip. The board has simplest form with all the Port pins terminating in a Relimate connector (Header Connector) for easy connection to the outside world. Some of the key benefits of this Development […]
Wireless PICAXE-based water tank level sensor
Posted on: 15 Apr 2017
Over the last few months I have prototyped and built a water tank level sensor for my 9000L rain water tank. The design is based entirely on Silicon Chip’s PIC-Based Water-Tank Level Meter, but instead of programming PICs, I prototyped using an arduino, and built the final version using PICAXE microcontrollers. The sensor consists of […]
Circuit lets you test capacitors
Posted on: 15 Apr 2017
Electrolytic capacitors tend to leak with time. The circuit in Figure 1 lets you test capacitors and decide whether they’re worth using. You can set the constraint on the leakiness through the values of CREF/RREF. The values in the figure are typical for general testing of all capacitors, from 1-nF ceramic versions to 1000-μF electrolytic […]
Electrical Subsystem
Posted on: 15 Apr 2017
The goal of the electrical design was to streamline an automatic shift control while keeping manual user input in a fast, user-friendly way, incorporating Advanced Electrical Subsystem Control. The electrical design was driven by the complexity required by the mechanical system. The system takes in rider input in the form of a throttle position sensor, […]
pic18f2550 Microcontroller Project Board
Posted on: 15 Apr 2017
The new PIC18F2550 Project Board was designed as the development platform for student projects. The board features MCU: PIC18F2550 with external xtal, ADC: one channel 0-2.5V sigma-delta converter, Linear Technology LTC2400/LTC2420, 6-channal 10-bit ADC 0-5V, Display: Two connectors for text LCD or GLCD, USB: onchip USB port with type B connector, Power supply: onboard low […]
Worlds Most Useless Machine Rebuild
Posted on: 14 Apr 2017
The Original Build Back in 2009 I build my first copy of a “worlds most useless machine” from a video I found on wimp.com, it is no longer posted, which was a copy of the real original by Claude Shannon called the ultimate machine. The original box was built quickly over the course of one […]
Another DIY function generator using PIC16F628
Posted on: 14 Apr 2017
An extremely simple and low-cost Sine/Square wave generator, known as the “Custom Function Generator,” is developed based on the Analog Devices AD9835 Direct Digital Synthesis (DDS) Generator chip.. The frequency can be set for any frequency from 1Hz to 10MHz in 1Hz resolution steps! All this with three push buttons and a novel “sliding window” […]
DIY automation of your existing window blinds. Works with a Z-Wave controller.
Posted on: 14 Apr 2017
You wake up in a dark room and have to use an artificial light before letting the sun in by opening the blinds in the bedroom. You come home from work to a hot house because the sun was warming it all day. Now, you have to adjust the thermostat to cool it down. You […]
How to use a 74HC595 Shift Register with a AVR ATtiny13
Posted on: 14 Apr 2017
Intro: How to use a 74HC595 Shift Register with a AVR ATtiny13 If you have been playing with microcontrollers and electronics then you have likely seen LED dot matrix displays and other projects that use shift registers like 7-segment displays and more. This instructable goes over a quick intro to the 74HC595 8-Bit Serail to […]
