Here is a tear-down of a mains powered (230V 50 Hz) timer switch. Let’s look how this is built. Many mains power timers use mechanism that has mains powered syncronous motor, but this is different. This one has a electronic clock timer in it. There seems to be one clock IC with a crystal (around →
I visited yesterday Critical Communications World 2023 seminar. My report article is published in Finnish at https://www.uusiteknologia.fi/2023/05/24/nokia-hyvin-esilla-drone-ratkaisullaan/ →
50 years ago, Robert Metcalfe (who was working at Xerox PARC in 1973), wrote the first memo (titled “Alto Ethernet”) outlining what would become the ubiquitous Ethernet protocol! The idea was first documented in a memo that Metcalfe wrote on May 22, 1973. In 1979 he started a little company called 3com. Ethernet was commercially →
Tired of the usual piggy bank? Tired of having to count every coin cent by cent? Here is a quick test of electronics gadget that solves the counting problem. Digital Moneybox Savny InnovaGood is a Gadget Tech Digital Electronic Money Box! It is advertised as a perfect gift for kids and adults to start learning →
I accidentially killed my favorite multimeter that had served me well for a long time. I was verifying another multimeter by comparing it’s reading to measurement made by this meter (that was checked to be accurate with a calibrator in 2020). My meter just went dead. New battery did not help. Any repair tips or →
I visited Embedded Conference Finland 2023 today. Here are some picks from the conference. Analog Devices single pair Ethernet demo with 400 meters of cable Avnet Embedded gave me some Belgian chocolate Smarc vs new smaller OSM module →
The legend of the Klon Centaur guitar distortion effect pedal, which debuted in the mid-’90s, has taken on a life of its own as one of the most collectable effects pedals of all time. It got fame because it was used and liked by such players as John Mayer, Nels Cline and Joe Perry (to →
Bang on design and use! ‘Forbidden reach around’ Tell people – just because it fits you should not plug it in. Did you know that figure 8 power cable plug (IEC 60320 type C plug also known as IEC C7) fits into XLR make connector? If it’s round outside, don’t plug an AC cord in, →
May 4 is the Star Wars Day. The words, “May the 4th” seem to beg for the rest of the catchphrase to be uttered. Star Wars Day is an informal commemorative day observed annually on May 4 to celebrate the Star Wars media franchise created by founder, former chairman and CEO of Lucasfilm, George Lucas. →
What happens when your RS-232 serial ports do not have enough surge protection in them and surge hits? Here are some examples what can happen: The failed chip on those examples is ZT3243LFEY from ASIX Electronics Corporation. ASIX Electronics’s ZT3243LFEY is triple transmitter quint receiver rs-232 28-pin tssop in the interface, bus line transceivers category. →