Sorting with UV light
I ordered some 1 Watt and 3 Watt LED’s from AliExpress. They were cheap, like 10 cents each. Free shipping. All good till they showed up mixed in an envelope. In regular light they are identical in appearance. Fortunately I had a small UV flashlight I had ordered. I thought it was interesting and had […]
no upgrade for Eagle
I licensed Eagle 6.5 in 2013. When I resumed designing boards this year it started bugging me to upgrade. Figuring it would be disruptive I put it off. Well, I went to finally upgrade this week and discovered that the ‘light’ license has no upgrade option. It’s another $69 if they want me to upgrade. […]
Orange PS revision
I had some time this evening to assemble a prototype for the power supply. It immediately drew 1amp and started to blow up a capacitor. Not good. I’m not completely sure what was wrong. The only deviation had been using a 1N5818 diode instead of a 1N5822 on the feedback circuit. I don’t think this […]
Hokey Pokey with parts
My boards from OSHPark arrived yesterday. They look fantastic. I was very tempted to put a bay-light together before bed. It’s my first round board. That’s when I realized I had not ordered the LM7512 12v voltage regulators. I made a quick check of the schemtatic and LED resistor calculator to confirm that I had […]
Parts are here
My parts arrived from Tayda this weekend. It’s always fun to receive components and check them in. Boards are shipping today and I should be ready to build prototypes for the power supply and LED projects. I also received my OrangePi One single board computer. It’s a $10+ embedded Linux PC. 1/2GB of ram, network, […]
The thaw – resuming shipping of kits
I am very happy to announce a return to doing business. For the last 1.5 years I had stopped selling and shipping kits. I originally anticipated it being a shorter pause. I sold one house and bought another. While I’m not done with my new house I am to a point where I can resume […]
Orange PS
I found a neat SBC called an Orange Pi. It’s basically a Chinese knockoff of a Raspberry Pi. Similar, but not the same. The problem is that it uses a stupid 4mmx1.7mm plug which is reasonably uncommon. A few folks mentioned removing the power connector and soldering in some wires. My eventual application is mobile, […]
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