In the first comment of this article (December 10), I mentioned Home-Made Digital Clock Keeps on Ticking. Well someone just e-mailed me to say that he built two clocks with the MM531x series clock chips and he still has the data book. He wrote:
"I have the 1977 National Semiconductor MOS/LSI databook on the shelf behind me, the MM5316 data runs from page 1-9 thru page 1-13. Paper is somewhat yellowed with age."
I thought about buying one of those turntables to digitize my vinyl recordings, then realized that the unit would outlive its usefulness and besides, I really didn;t want ot listen to the music anyway.
What do you do with the turntable once you've digitized all your vinyl recordings? It kind of has a limitee usefulness after that.
Indeed. It is sitting on a bookshelf. I offered it to other members of my family who also have extensive LP collections, but none were as enthusiastic about the idea. Still it wasn't that expensive (less than $200) and I went into the project with the knowledge that its usefulness was limited.
I use Audacity on my XP dn Win7 computers. The Win7 version stopped recording from the microphone input. No idea why. I switched to plugging my phone into a batter-operated voice recorder, then transfer the mp3 output to my PC. It's great for recording interviews.
The older version of Audacity on my XP laptop works perfectly. I often use it to record streaming audio.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Are the design challenges the same as with embedded systems, but with a little developer- and IT-skills added in? What do engineers need to know? Rick Merritt talks with two experts about the tools and best options for designing IoT devices in 2016. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.