Building a Magnetic Tape Recorder from Scratch (1949-1952)

Building a Magnetic Tape Recorder from Scratch (1949-1952)

A retired engineer recounts building a magnetic tape recorder from scratch in Germany, 1949.

Investigation of an OCXO and EFC Sensitivity

Investigation of an OCXO and EFC Sensitivity

0 Piezo Crystal Company Model 2940210 OCXO

For my GPSDO project I’ve opted for a Piezo 2940210 VCOCXO at 10 Mhz.  There is a dearth of information on this particular module available online, so I’ve put up this page to (hopefully) help anyone who has purchased one of the many that are currently available in the surplus market.

(A notation …..

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GPSDO OCXO Investigation

GPSDO OCXO Investigation

0

I’ve done a quick writeup on part of a project I’ve been mulling over for a few years now, a GPS Disciplined Oscillator.  Specifically, the article covers the OCXO – Oven Controlled Crystal Oscillator – made by Piezo Crystal Company (now Vectron), a model 2940210.  I’ve been unable to find much about this unit online, so I …..

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GPSDO OCXO Investigation

GPSDO OCXO Investigation

0

I’ve done a quick writeup on part of a project I’ve been mulling over for a few years now, a GPS Disciplined Oscillator.  Specifically, the article covers the OCXO – Oven Controlled Crystal Oscillator – made by Piezo Crystal Company (now Vectron), a model 2940210.  I’ve been unable to find much about this unit online, so I …..

Read the Rest

GPSDO OCXO Investigation

GPSDO OCXO Investigation

0

I’ve done a quick writeup on part of a project I’ve been mulling over for a few years now, a GPS Disciplined Oscillator.  Specifically, the article covers the OCXO – Oven Controlled Crystal Oscillator – made by Piezo Crystal Company (now Vectron), a model 2940210.  I’ve been unable to find much about this unit online, so I …..

Read the Rest

Time Lapse photography

Time Lapse photography

0

So, I found an old camera I don’t use anymore and was wondering what shall I do with it. The camera has manual mode – good! One microcontroller later I had a working prototype of time-lapse photography set. I soldered a pair of wires to the shutter button and connected it to AVR AtTiny13 through a transoptor. …..

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Portable Ammo Box Power Supply Unit PAB-PSU

Portable Ammo Box Power Supply Unit  PAB-PSU

0

When you’re in need of a power supply,the obvious solution is to use a computer’s PSU.

When you’re short of a proper casing,why not use what’s on hand and yesterday,what was on hand was a 50 cal Ammo Box.

I know it’s not a world’s first but I really needed a PSU for some testing quick and this has …..

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Training your PID

Training your PID

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Control theory must be on the short list for the most important subject that no one talks about. Break open a hobbyist robotics book and you are lucky if control systems are even mentioned. Control systems run our cars, fire our multi-million dollar missiles, and keep our buildings at the right temperature. The phase …..

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Roomba Hacking 101

Roomba Hacking 101

0

So you wanna hack a Roomba eh? Well here’s a collection of info to help you on your way. Myself, Jeremie, and Mark Martens did a little bit of the dirty work so you don’t have to. I hope you find this list of resources helpful:

First off somehow the ultimate resource for taking control …..

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Keypad Ignition Lock for Car : Up for sale!

Keypad Ignition Lock for Car : Up for sale!

0

Good day to all!

As you guys know,I’ve developped a keypad ignition lock for cars quite some time ago and now is the time to put them on sale!

I’ve personally designed,assembled and tested 3 of them so your cars can get that James bond look!

Demo:

*** The store is right here! ***

Info:
Want to add a little theft deterrent to …..

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