Archive for the ‘Datacomm’ Category:

2025-03-30 How To Hack Into IoT Using USB To Serial Adapter

This 3 minute video shows how to connect a $2.00 USB to UART adapter to a serial port on some things like cameras, modems, etc.  You need three short Dupont connector cables, green for ground and transmit and receive (crossover).  Connect the adapter to the USB port on your PC. Then in Linux open a

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2025-01-01 QR Codes Explained, Plus Bar Codes

Derek Veritasium shows us how QR codes work.  He pronounces the a in Veritasium like the a in tassel. https://www.facebook.com/reel/2506467346230147?mibextid=9drbnH&s=yWDuG2&fs=e

2024-12-18 Starlink Satellites Raising The Noise Level Of Astronomers Searching For Near Earth Asteroids

There are 9000 satellites, more than half are Starlink satellites.  Dr. Tyson explains. https://www.facebook.com/reel/348869794985264/?mibextid=9drbnH&s=yWDuG2&fs=e

2024-12-05 Voyager’s Computers Run On 70 Kilobytes Of Plated Wire Memory

An interesting video about NASA’s Voyager spacecraft computers. https://www.facebook.com/ThePrimalSpace/videos/1223112522301454/?mibextid=9drbnH&s=yWDuG2&fs=e

2024-11-04 Very Large Server Room / Data Center

https://www.facebook.com/reel/956494383084980/?mibextid=9drbnH

2024-11-02 AI Data Centers To Use Up To 40% More Electricity; Cleaning Snow Off Solar Panels

The demand for electricity will be up to 40% more just for AI data centers.  Steve Hanley’s sarcasm about watching Tik Tok videos are included, no extra charge. https://cleantechnica.com/2024/10/30/update-ai-data-centers-the-demand-for-electricity/amp/ Video of track vehicle cleaning snow off solar panels. https://www.facebook.com/memezarrr/videos/2897041153788366/?mibextid=9drbnH

2024-10-24 Starlink Mini Approved By Joe Rogan

It’s the size of a notebook.  For remote use. https://www.facebook.com/61552509624292/videos/1075991334061084/?mibextid=9drbnH

2024-05-26 Researchers Invent Mini Tuneable YIG Filter 3.4 to 11 GHz for 6G Datacomm

This is an interesting article: mainly about a miniature Tuneable YIG – yttrium-iron-garnet – filter that could replace many fixed filters. Quote “”Wireless devices use different filters for different frequencies, with the effect that covering all frequencies or bands requires large numbers of filters that take up substantial space. (The typical smartphone includes upwards of

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2024-05-22 Immersion Cooling Servers, Datacomm Equipment

That’s hard to believe!  I would just put the equipment in a sealed rack with a lot of well filtered airflow.  Someone suggested Fluorinert. https://www.facebook.com/reel/464912799258554?mibextid=9drbnH&s=yWDuG2&fs=e

2024-05-16 Delta-Sigma Modulator Using 555 IC And Current Source

This circuit is used for converting an analog signal into a digital pulse stream.  Such things as class D audio amplifiers, servo amplifiers, A to D converters, or sending an analog signal across a fiber optic link. The Schematic and explanation here in this webpage. https://lrak.net/wiki/555_Delta-Sigma_Modulator.html The output signal is shown as audio modulated onto

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