|
Link Neatly Measures Temperature
10/26/00 EDN-Design Ideas Figure 1 shows a convenient and neat way to measure temperature using the USB of a PC. An ADM1023 IC senses the temperature, and an Anchor Chips EZ-USB AN2131SCµC provIdeas control. The ADM1023 is a low-cost device with an accuracy of 1°C and a resolution of 0.125°C. The IC is a two-channel device that can measure its own local temperature and the temperature of a remote location__ Circuit Design by Mary Burke, Analog Devices, Limerick, Ireland
Method Tests Cables
10/17/02 EDN-Design Ideas MOSFET serves as ultrafast plate driverEngineers have long known how to test a cable for continuity by simply connecting all conductors in series and checking with an ohmmeter. This method is sometimes impractical, however, because it cannot check for short circuits. The method shown in Figure 1 solves the short-circuit problem. Connecting__ Circuit Design by Jim Keith, Bell-Mark Technologies, Dover, PA
MP-3 Stereo Transmitter with USB control from a PC
This low cost MP-3 player was designed to be run from a PC via a USB interface. The MP-3 audio from a PC sound card is transmitted to a home stereo via a synthesized FM Transmitter. Also included is a 433 MHz wireless remote control to provide basic VCR type functionality to the whole design. __ Designed by Steve Hageman
Multi wire cable tester
A multi wire cable tester with a separate LED for each wire. Will show open circuits, short circuits, reversals, earth faults, continuity and all with four IC's. Designed initially for my intercom, but can be used with alarm wiring, CAT 5 cables and more __ Designed by Andy Collison
Multiple Output DC/DC Converter Runs Off 2-Cell AA Batteries USB or AC Wall Adapter
DN1006 Design Notes___ Linear Technology/Analog Devices
New ICs Simplify Battery Charging from the USB
DN320 Design Notes __ Linear Technology/Analog Devices
Null Modem cable 9-pin
Circuit only, no circuit description included. __ Designed by Tony van Roon VA3AVR
Null Printer Adapter
This circuit is a simple adapter for PC parallel port to think that there is a printer connected to computer. This adapter is useful for testing printing speed with different software and as a part of your own designs.
You can use this circuit to connect your simple circuits to the parallel port __ Designed by Tomi Engdahl
Parallel port logic analyzer
As I don't have an oscilloscope yet so I needed a cheap way to analyze some signals, I decided to build a simple logic analyzer to use with PC's parallel port. I used the schematic from here as a base and made my own improvements to it so it would __
Parallel Port Microchip PIC Micro Controller Programmer
PIC Programmer is an essential tool if you wish to learn or build projects with Microchip PIC Micro Processors. This programmer is built using Free Windows Software called WinPicProg and other similar software from PICALLW or Oshosoft __
PIC USB Interface with FT245
This is a simple design that interfaces a PIC 16F877 microcontroller to the USB bus using the FTDI FT245 USB FIFO device.
It has been designed using a simple single sided PCB with only. (__ Designed by Ian Stedman
Powered AA NiMH
& NiCd Battery Charger
The charger in this project is designed to charge two AA NiMH
or NiCd cells of any capacity (as long as they are the same) at about 470mA. It will charge 700mAh NiCds in about 1.5 hours, 1500mAh NiMH
s. __ Designed by Stefan Vorketter
Printer Sharing Switch
I had two computers, a Mac Mini and a generic Windows computer. Both were on different networks, but in the same room, and I wanted to share a Lexmark USB laser printer between the two of them. I ended up making this switch to share the printer between the two computers __ Designed by Dick Cappels
Programmer for Atmel AVR Controllers
USBasp is a USB in-circuit programmer for Atmel AVR controllers. It simply consists of an ATMega48 or an ATMega8 and a couple of passive components. The programmer uses a firmware-only USB driver, no special USB controller is needed. __ |
