Experimental circuit board modules can be made quickly and fairly easily. They have the advantage of being more than twice as fast to build than a custom circuit board. They are also easy to test in a breadboard. The modules detailed here are ones I have made using various Picaxe microcontrollers. Step 1: Picaxe Project …

Picaxe Projects #1: Making Fast Printed Circuit Modules Read More »

The PicoBuck is a small and inexpensive 3-channel LED driver. It employs constant-current buck driving which approaches an efficiency of 95% (theoretical). It’s based on AL8805 LED Lighting Buck Driver from Diodes Inc. Description The PicoBuck supports a wide range of input voltages (6v to 20v) which may be connected to the VIN header. It …

PicoBuck – RGB LED Driver Read More »

Some notes: 1. The C3 can be omitted, its purpose was to filter noises picked up by connecting cable between board and sensing transistor, but as the transistor is mounted on the board it become unnecessary. 2. R8 is optional and is for reducing the fan speed. Its value must be calculated according the fan …

Simple and small temperature fan controll Read More »

Description This is a simple circuit with two buttons and two LEDs to control the D945GCLF Intel motherboard. Both power and reset buttons are included as well as hard disc activity  LED and power status LED. The special feature included is the sleep effect of Apple laptops on the power LED! Design and Implementation The design …

Intel D945GCLF Small Front Panel using PIC12F629 Read More »

In this instructable I’m going to show you how to make your own PIC18 development board that features both Ethernet and Full Speed USB 2.0 at a low cost. Features: The development board is based on a PIC18LF4553 microcontroller. The microcontroller features a Full Speed USB 2.0 (12Mbit/s) interface without the need for any external …

PIC18 Development Board with Ethernet and USB Read More »

Description The WM7210 is a low-profile silicon digital microphone. It offers high Signal to Noise Ratio (SNR) and low power consumption and is suited to a wide variety of consumer applications. The WM7210 incorporates Wolfson’s proprietary CMOS/MEMS membrane technology, offering high reliability and high performance in a miniature, low-profile package. The WM7210 is designed to …

Scottish chip firm Wolfson improves audio in smartphones Read More »

Ready for sampling in September, Toshiba’s 48-layer BiCS (Bit Cost Scalable) flash memory stores 256 Gbits using a 3-D vertically stacked cell structure and 3-bit-per-cell triple-level cell technology. By employing this 48-layer vertical stacking process, BiCS flash surpasses the capacity of conventional 2-D NAND flash memory, where cells are arrayed in a planar direction on …

Toshiba launches 256-Gbit 48-layer 3-D NAND flash Read More »

This post explains the idea of creating custom characters on any LCD ( e-g on 16×2 LCD ) which has HD44780U controller in it. Almost all 16×2 or 20×2 LCDs have HD44780U controller in them[1]. This controller provides the functionality of CGRAM ( Character Generator RAM ). We can write character patterns on this RAM …

How to display custom characters on LCD using PIC16F877 Read More »

Microcontroller is a small and self-contained computer on-chip which can be used to build several low-cost and less-complex projects. As the microcontroller based mini projects are of low cost and can be implemented in less span of time, most of the students prefer this controller based mini projects to improve their knowledge with innovative ideas. …

Top Microcontroller based Mini Projects for 3rd and 4th Year Engineering Students Read More »

An IR sensor is an electronic device, that produces in order to detect some parts of the environs. An infrared sensor can measure the heat of an object as well as detects the motion. These sensors are used to measure only IR radiation, rather than producing it that is called as a passive infrared sensor. …

IR-Sensor Circuit and Interfacing with PIC Microcontroller Read More »