Make a Custom Membrane Keypad for Arduino

My son got one of these Leap Frog toys a few years ago as a gift.  He enjoys playing with it very much.  I am not sure how much counting and learning he is doing but it makes funny noises and sings to him so its a lot of fun. Recently the unthinkable happened.  It … Continue reading Make a Custom Membrane Keypad for Arduino

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“Lab” Upgrades

For the longest time my home electronics projects have been done on a 60" x 30" folding table in one of our spare bedrooms.  My growing collection of project boxes, spare parts, and equipment finally started to put stress on my furniture - particularly my table. I spent embarrassingly too long fretting over whether to … Continue reading “Lab” Upgrades

Ancient History: Let’s Build Our Own Console!

Found a link to one of the many "big huge awesome" projects that we started in ACM@UIUC back in the day. I'm pretty sure this page is the only thing that actually came out of this project. 🙂 I think (hope?) that I've gotten a little better at completing things (retro pc project and this blog not … Continue reading Ancient History: Let’s Build Our Own Console!

Using Ultrascope for Rigol DS1052E

I've become more and more annoyed at having to export images from my Rigol scope to a flash drive plugged into the device. I'd much prefer to capture signals and images directly from my Macbook. Unfortunately, the PC software that comes with the Rigol -- Ultrascope -- does not run on Mac OS X. Boo. … Continue reading Using Ultrascope for Rigol DS1052E

Sometimes it is a bad part… sometimes.

I've spent the last few weeks working on my retro pc project. The first step with the 8284 seemed to go well but the trouble began when I tried wiring up the 8088. I wasn't getting anything remotely close to the expected boot sequence. According to the datasheet and The 8088 Project Book a few clocks … Continue reading Sometimes it is a bad part… sometimes.

Starting a Retro PC using The 8088 Project Book

Several months ago, I purchased a copy of Robert Grossblatt's classic The 8088 Project Book in hopes of building a retro 8088 computer. My plan was to scavenge the parts from craigslist, ebay, and a couple Seattle area used computer junk stores. My adventures locally didn't result in many parts though I did have much … Continue reading Starting a Retro PC using The 8088 Project Book