by packetbob @ instructables.com: I decided to put together a toaster oven and wanted something that could handle large boards and possibly do small production runs. Doing a web search, you will find many options for toaster oven reflow controllers. They range from one-off designs...

Rui written an article on how to build your own PCBs using a CNC machine. Rui Cabral writes: The PCB manufacturing method i used before buying my CNC machine was the lithography method and worked as follows: First i printed the board design on an acetate sheet. This sheet was...

by Susan Nordyk @ edn.com: The LTC4015 synchronous step-down battery charger controller from Linear Technology offers charge current of up to 20 A, multiple-chemistry operation, and onboard digital telemetry. The controller transfers power from a variety of input sources, such as...

by John Fattaruso @ edn.com: When working with discrete JFETs, designers may need to accommodate a large variation in device parameters for a given transistor type. A square-law equation is usually used as an approximate model for the drain-current characteristic of the JFET:...

Tiny Board has been designed around LV8772 IC from On-Semi. This driver is capable of micro-step drive and supports 4W 1-2 phase excitation. It has Low on Resistance with motor current selectable in four steps. The board is equipped with unusual condition warning LED and input Pulse...

Simple LCD adapter board offers an easy way to interface a standard 16X2 LCD to your project. Specifications Very Tiny PTH PCB Onboard Preset to set the Contrast Easy interface with 10 PIN Box Header Connector LCD Adapter Board -...

I/O Expander Board offers a convenient way to interface upto 16 I/O pins in your project using SPI/I2C bus.  This kit uses the famous MCP23S17 IO chip from Microhip. Specifications Supply sourced through the interfacing Box Header connector The kit has 2 separate Box Header...

EEPROM Add-On Board offers an easy way to interface a standard 24Cxx type I2C EEPROM to your project. Specifications 5 VDC supply sourced through the interfacing Box Header connector Jumper selectable address option available Four mounting holes 3.2 mm each PCB dimensions...