Archive for the ‘Tutorials’ Category

How to use Geiger Bot with the MightyOhm Geiger Counter

Friday, March 9th, 2012

Geiger Bot is an iOS application that allows you use your iPhone or iPad as a sophisticated display for an ordinary Geiger counter. It works with most Geiger counters that make an audible “click” for each event or count that is detected.

Here’s how to get your MightyOhm Geiger Counter working with Geiger Bot. These instructions were tested with an iPhone 4, but should work with other iOS devices (iPads and other versions of the iPhone).


Adventures with EPROMs

Thursday, February 16th, 2012

Reading Fluke 8842A EPROMs

In December I received a strange request from Franci, S57FK. He had a sick Fluke 8842A digital multimeter with a bad processor and was in desperate need of some EPROM images. He noticed that I had an identical Fluke sitting on my bench and was hoping that I could read the contents of the EPROMs inside my unit and send them to him so that he could get his meter running again.


PCB / Electronics Workbench Flickr Pool Screensaver

Monday, February 13th, 2012

PCB/ELWB Collage Screensaver

Interested in setting up a cool screensaver that will display a continuously changing collage of photos from the Electronics Workbench and Printed Circuit Boards flickr pools?

Here’s how to do it in Windows:

First, install Picasa.  This should install the Google Photos Screensaver.

Next, open the Windows Screen Saver Settings control panel. (Type “screen saver” into the Windows 7 search bar, open the Windows Control Panel and navigate to Appearance and Personalization->Change screen saver, etc.)

Select the Google Photos Screensaver and click Settings…

Set the Visual Effect type to Collage, and adjust the Change picture every… slider to taste – I suggest starting at 3.0 seconds.

Uncheck all options except Photos from public sites, then click Configure…

Copy and paste each of the following RSS feeds into the Additional photo feed sources dialog, and click Add after pasting each one.

After adding both feeds, make sure the entries for each them are checked and click OK. Then click OK again to return to the Windows Screen Saver Settings window.

Click Preview and photos from the Electronics Workbench and Printed Circuit Boards flickr pools should start appearing on your screen. If so, the screen saver is working.

Click OK to close the control panel and you’re done!

If you’re interested in setting this up in OS X, the process is very similar – just add the RSS Feeds to your screen saver settings as documented here.

Have fun!

Tutorial: Geiger Counter Data Logging

Friday, February 10th, 2012

Logging data from the Geiger Counter Kit

So, you want to log data with your Geiger Counter kit?

Here’s how to do it!


Pimp your Geiger: Add a superbright LED

Thursday, February 9th, 2012

Pimped Geiger Counter

Want to give your MightyOhm Geiger Counter Kit a little more sparkle?

Replace the ordinary indicator that comes with the kit with something special – a superbright LED!

Here’s how:

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