Huaxing Intelligent Control UWBLOC positioning system adopts self-developed wireless pulse ranging technology to achieve precise positioning of exhibition hall personnel and exhibits. The positioning accuracy is better than 30 cm. By setting the base...
A80 Teardown The newer A80 with QHD at 30 fps and 4K24p capabiltiy (20MP still frames) has a lens shroud that is tucked under the front cover (left), which needs careful persuasion for its clips to release without breaking. The short sides appeared to...
This article shows the basics of capacitor safety. 1. My Story When I was a teenager we used to Soviet mains powered have film projector. This project had a small AC motor, that was used to roll the film. It had a capacitor or varistor connected in parallel...
No, this isn't like the sound of one hand clapping. Several popular ham antennas depend on multiple sections of coax, which act alternately as radiators and delay lines. The velocity of propagation in the delay lines is well known, being 66% for solid...
Although women represent nearly half of the world's population, the number of technology companies that address their specific health care needs is but a small fraction of the global technology market. In 2019, the Female Technology, “femtech,”...
Fronius Symo 6.0-3-M inverter Table of Contents 1. Interfaces 1.1. DATCOM1.2. The Datamanager card 1.2.1. Ethernet1.2.2. WLAN1.2.3. USB 2. Other3. References The Fronius Symo 6.0-3-M is a 6 kW 3-phase grid-tie inverter that is currently a part of my...
The Expert is a Brazilian manufactured in the 80's and it is compatible with MSX standard. It uses a detachable keyboard but it lacks the Caps Lock LED on the keyboard because the 13 pin connector used ran out of pins (even the shield is used as a 14th...
One of the popular chip formats in the 70's and 80's were the ubiquitous EPROMs (Electrically Programmable Read Only Memories). They had very good memory density at the time and were accessible technology for hackers and OEMs alike. They had the advantage...
Table of ContentsIntroductionAlternate InstructionsLooking for how to use this with Onocoy?Hardware ComponentsRecommended AntennasBasic Antennas for RTK, ROVER, Window SituationsAdvanced Antennas for Base and Reciver StationsStep-by-Step Setup1. Assemble...
Some people say that if LED street lights are not powered by solar energy, they will have no further value for use; Some people also say that solar power supply will only make the production cost of LED street lights more expensive, making it difficult...
I have often been told about engineers who do not read, much less follow, directions when assembling an item. Regrettably, I am no exception to this observation. There have been numerous occasions when I have emptied the contents of a newly acquired...
As an operating element of mechanical equipment, servo motors get widely used in the servo systems. Sometimes the heating of the operating servo motors may make us a wonder whether it is normal if we lack some professional knowledge. Actually, it...
When it comes to homebrew computer designs, nothing beats the classic microprocessors from 1970s and 1980s. SDC is an idea of a computer bringing together old and new technologies. The SDC consists of some real, classic CPU and a modern microcontrollers...
Some Interesting Stuff:Blue Sea Systems has some inexpensive, 80-volt DC fuse products.Read for perspective on American Culture (Too Many Experts Protecting Interests, Not Looking For A Way To Make Solar Energy Affordable)Images of Conformal Building...
Briefly: 80-wire IDE cables are *great* for high-speed stuff... But the pinout is a bit more difficult than a straight-through 40-wire IDE cable, because the 80-wire cables have shielding (yay!) which is connected to specific pins designated as ground,...