Sunday, February 18, 2007
Dedicated to the support, open exchange and dissemination of in-development standards from EDA Industry Working Groups. The Electronic Design Automation (EDA) and Electronic Computer-Aided Design (ECAD) one-stop resource on the WWW!
Saturday, February 17, 2007
How to Use Your PC to Measure Temperature
Thermocouples, resistance temperature devices (RTDs), thermistors and infrared thermometers are all types of temperature sensor. Which you choose depends on factors like your expected maximum and minimum temperatures, the accuracy you need and your environmental conditions.
752-RTD: RTD Resistance Temperature Measurement, Digital I/O, Counting, Analog Output
- Measure temperature using RTDs or Pt100 sensors, and voltage signals
- With extra hardware monitor thermocouples and strain gauge bridges
- Includes the powerful yet easy-to-use Windmill software for Windows: no programming required
- Connect up to 8 USB units to one PC
Temperature Control with a PC
Based on the above the Octagon computes a sensible heating/cooling current value and transmits a corresponding analogue signal to the current control electronics in the TC-box.
The current control electronics control the current provided by a big external power supply flowing through the peltier heating elements according to the signal received from the Octagon.
This is a project that will help students learn both hardware and software aspects of a control system. Here you can test out an automation program on a PC with minimum external hardware.
When you implement in the field, the system has to be a dedicated real time uC based product on custom firmware. Systems with OS + Software combination are not known to be reliable in Process Control. But OS + Software is good for Supervisory Systems which get their data from Real Time Controllers.
So a front end controller must be Rugged, Non-PC based and Non-OS based unit. This means use something like a SBC. With a Robust and Compact (means fast) firmware.
The firmware should be Polling or Interrupt based but with both internal and external watchdog. Most important a Power supply Management that resets system properly over Brown-outs and Black-outs. Even today some Embedded Systems i have to turn off and on after power resumes.
Don't Forget, Multiple Watch Dogs and Multiple Power Management for graceful start of system !! Use one big SuperCap if you want. Else people will go back to Thermostats.
Friday, February 16, 2007
PIC Game system - Hardware description of the system that is running pong and tetris.
AVR Color Clock - A clock using the standard resistor colors (+2) to show time with two RGB LEDs.
PIC Mini Dice is an electronic dice based on a PIC10F200 and built with surface mounted components.
Monday, February 12, 2007
- PIC Applications
- PC Programming Interface (LPT) for PIC microcontrollers
- Related Internet Links
Friday, February 09, 2007
Metrology software for the semiconductor industry. Boin GmbH develops software solutions for the semiconductor industry and provides services such as the development of complex mathematical algorithms.
WAFERMAP is an award winning software package used to collect, edit, analyze and visualize measured physical parameters on semiconductor wafers. WAFERMAP can import data files from various metrology tools such as ellipsometers, thickness gauges and four point probes. The imported data can then be visualized or printed as line scans, contour plots, 2D or 3D plots or as a histogram.
Haldenweg 25, 89160 Tomerdingen, Germany
Holtek Semiconductor IC design
These new 32-bit Flash devices, include features such as a high operating speed of up to 72MHz (90 DMIPS), a single power supply with an operating voltage range of 2.7V~3.6V and an industrial temperature range of -40~85.
With Holtek's ISP (In-System Programming) and IAP (In-Application Programming) integrated functions, users will find the implementation of software upgrades an easy and quick process, thus enhancing the efficiency and flexibility to the products.
The ESK-66F-A01 Development Package includes an ESK-200, ESK-201, e-Link, M1001D, D1003C, mini USB cable and e-Cable 1225A, components which combine to provide the user with a complete development environment kit. Among them, the ESK-200 is a development board, which together with the HT66F50 device, forms a learning platform for new users.
This development board is equipped with peripherals such as a seven segment display, a matrix dot LED, an LCD panel, a buzzer and input keys.
Holtek Semiconductor Inc.
4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan