Category – Electronics – Page 2

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Helping out with the design of a giant LED wall at my local hackerspace inspired me to put together something with RGB LED strips myself. After browsing the internet for some inspiration, I decided to build an Ambilight clone.
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A friend of mine got wedded recently and wanted his wedding party to have a setup with a big pushbutton that people could bash in order to take a picture of themselves. He asked me if I could design something bombproof that would survive the usual wedding party shenanigans.
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A few months back Texas Instruments unveiled their latest temperature sensor, the TMP006. The cool thing about it is that it’s a contactless IR sensor, meaning it can be used to measure the temperature of a location without physically touching it. Of course I wanted to find out how well this worked.
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I recently had to program quite a few microcontrollers and got annoyed at one hand having to both hold the PCB and use the keyboard to program a chip. Therefore, I decided to upgrade my programming pen, so that I could trigger programming with its build-in pushbutton. The solution I came up with was to add a tiny USB keyboard circuit to the pen’s interface.
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One minor annoyance when programming microcontrollers in-circuit, is that often quite a bit of PCB space is lost due to the programming connector. Furthermore, when you have to program many chips, repeatedly reconnecting the programming cable quickly becomes a chore. So when I found an article about constructing a programming pen that would help solve both of these problems, I decided to build one for myself.