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Category Archives: PC Computers

Hardware and Interface with Computer and Hobby Programming.

Aaron Cake Basic Electronics

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Aaron Cake has many basic electronic circuits and other electronics information in his archive that is online since the 90s. Antique electronics and Parallel Port Programming.

Aaron Cake Electronics

Aaron Cake Basic Electronics

The Schematic Symbol Reference, How To Solder and Desolder helped many electronic beginners in building their Projects. This was a valuable resource in those days even though it appears common today. The internet was used to genuinely share useful learning and ideas.

Some highlights are circuits on Power Supplies, a 120VAC Inverter, FM Transmitter, Automatic Headlight Brightness Switch, Car Alarm  and a Wireless Auto Tachometer. see also the Simple Colour Organ and the Solid State Tesla Coil.

Mikes Optical Timer Counter

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“This page is the result of a lot of effort over the past couple years to develop a quality, inexpensive device to test shutters on the classic film cameras that I have been using…” .. Mike

Mikes Optical Timer Counter

Once built, this counter timer/device is easily adapted to a wide variety of applications, simply by construction of a new sensor. Although designed to be used with photo-transistors, this device can also use relays, transistors and many other kinds of electrical switches as a sensor.

Mikes Optical Timer Counter

Other Projects

Model Railroading, 3 Transistor Audio Preamp for a Dynamic Microphone

Configuration and control of this counter/timer is through a RS232 port. Cable configuration for a usual PC compatible would consist of a null modem cable, with a female connector on the timer/counter end of the cable. The correct cable for a PC or usb to serial adapter with a DB-9 interface is listed in the bill of materials.

delabs Page Digital Timers Counters and Clocks 

Zelscope Sound card oscilloscope

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Zelscope is a Windows software that converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer’s sound card as analog-to-digital converter, presenting a real-time waveform or spectrum of the signal – which can be music, speech, or output from an electronic circuit.

Zelscope Sound card oscilloscope

Zelscope features the interface of a traditional oscilloscope, with conventional gain, offset, timebase, and trigger controls. As a real-time spectrum analyzer, Zelscope can display the amplitude and phase components of the spectrum.

Zelscope Sound card oscilloscope

The typical input voltage should be about 1 volt AC at the line-in jack of the sound card, so a voltage divider or a buffer amplifier is highly recommended.

xoscope for Linux –  Similar Ptoject

Zelscope also allows for an easy measurement of short time intervals in mechanics experiments. Zelscope has proven useful in debugging music and sound processing software.

MarS Board – Freescale ARM Cortex-A9

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A super ARM DIY Platform. Measuring only 65.46mm by 102.04mm, the MarS Board is a low-cost highly-integrated controller board based on Freescale’s i.MX 6 Dual ARM Cortex-A9 application processor which encompasses a dual-core platform running up to 1 GHz with 1 MB of L2 cache and 64-bit DDR3 or 2-ch., 32-bit LPDDR2 support.

MarS Board – Freescale ARM Cortex-A9

MarS Board - Freescale ARM Cortex-A9

The MarS Board is a ready-to-run platform with ported Linux 3.0.15 or Android 4.0.4. Additionally, Embest provides the demo for uC/OS-II V2.92.05 for user experience. It is an ideal core processing component for your end devices based on a single hardware design

Features Include These too

  • MarS Board is a Multi-Display platform.
  • MarS Board is a Multi-Expansibility Platform
  • NEON SIMD media accelerator
  • HD class 1080p encode/decode video engine
  • 10M/100M/1Gbps Ethernet Interface