My Commentary and Technical help

I have been working on a book of LED Cube Projects.  It might end up being two books one for the Arduino and one for the Raspberry Pi.  So f...

I recently purchased another pile of used projectors to repair and then send to Africa.  However three of them need more than just cleaning....

Once again this year I attended the mini Hamfest.  It is just for a couple hours in the evening but you get to talk to a lot of interesting ...

I spent a weekend fixing seven Dell 2300MP Projectors.  In every projector the power supply was not working.  I replaced the same capacitor ...

I have built a DIY 4x4x4 LED cube that I am testing with the Raspberry Pi.  It is up and working, I just need some code to make it do someth...

I have been trying to run one of the 8x40 LED signs from a Raspberry Pi.  For some reason I am getting a lot of glitches.  I know the Raspbe...

I have been working on a book of Raspberry Pi projects.  One of the projects is an 8x8 three color LED array.  I picked up some more of them...

My church had a fairly new Dell 2300 MP DLP Projector that had died.  I came across a video on YouTube that said this one capacitor in the p...

The other day I had a NEC LT-265 projector that would not focus and had a rattling sound.  To open it up remove the screws on the bottom, on...

Yesterday I dissembled a Hitachi CP-X809 Projector to see why "dust" was stuck in between the lenses or LCD's. There are a l...

Here is a picture of a printed 3D hand.  When I first tried to print it I had fingers flying all over the place.  I even tried gluing them d...

I have purchased some junk EcoQuest Fresh Air air purifiers to repair.  I fixed one by replacing the capacitors in the power supply.  I like...

Here are a couple of tricks I have learned.  When I first started printing everything worked fine.  Then after making about 5 things they s...

Over the weekend I dissembled and repaired a Crown XTi-1000 amplifier.  The problem was caused by bad connections on a bridge rectifier loca...

One of the first things I do when I buy something used is to make a list of things to repair.  On the car it is something like this: 1. Pri...

After 20 years of driving vans, I have made a drastic change.  I drive 45 miles to work every day and the cost of gas for the van was runni...

My 3D printer had its first test run last night.  So far I need to replace the X axis stepper motor it has a bad connection inside of it so...