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Archive of posts filed under the Projects category.

Multi-Instrument Digital Assistant – PIC16F84A

Posted by delabs on 7 May 2009, 5:44 pm

Multi-Instrument Digital Assistant – PIC16F84A
“It contains four instruments in one unit: logic probe, single channel logic state analyzer, frequency counter and serial code receiver.”
The Engineer’s Assistant – Erik Grindheim

Filed under Embedded, Projects.
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Optical Retro-Reflective Proximity Switch

Posted by delabs on 15 December 2008, 5:05 pm

This circuit is used to detect objects by reflected infrared light. It can be built into a cylindrical enclosure just like an inductive proximity switch. This is also useful as a level detector for colored liquids like oil. This has some immunity to ambient sunlight as it detects ac pulses.

InfraRed Detector for Proximity Switch
InfraRed LED [...]

Filed under Process Control, Projects.
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Electronic Projects of Ronald

Posted by delabs on 3 August 2008, 7:24 pm

Electronic Projects of Ronald
Ronald Dekker’s Nixie Tube Projects and Software.
(Image Below Colored and Enhanced by Anantha Narayan delabs)

A poorman’s oscilloscope
Colored LEDs for Jan Verhoeven’s farewell present!
Mixed-Signal LED clock
In System programmer for the P89C51Rx2
Flyback Converters for dummies

Filed under Projects.
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Electronic Shift Monitor

Posted by delabs on 30 July 2008, 12:45 pm

The Security Guard duty monitor below, shown in eight circuits at Digital Circuits – 1 are examples of logic circuits, i have converted them from the DOS Orcad to Orcad 9 and corrected some errors a few years back.

These circuits can be used for looking at the logic blocks or to learn. This product was [...]

Filed under Circuits, Projects.
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ICL8038 Versatile Waveform Generator

Posted by delabs on 17 November 2007, 5:59 pm

ICL8038 Device Information
The ICL8038 waveform generator is a monolithic integrated circuit capable of producing high accuracy sine, square, triangular, sawtooth and pulse waveforms with a minimum of external components. The frequency (or repetition rate) can be selected externally from 0.001Hz to more than 300kHz using either resistors or capacitors, and frequency modulation and sweeping can [...]

Filed under Integrated Circuits, Projects.
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Digital Seven Segment Clock Gadget

Posted by delabs on 21 May 2007, 1:08 pm

Digital Clock Web Gadget for Date and Time
This Web Gadget is for the Google Homepage, Web-page or blog. It has seven segment display, similar to traditional Digital Clocks in the dashboard. It will also indicate the date and week.

Add to Webpage

seven-segment-digital-clock The Project Page
The javascript is as close as possible to a c program that [...]

Filed under Basic Electronics, Projects.
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