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“3-channel voltmeter with the ability to measure both negative & positive voltages on the same circuit or 3 different circuits simultaneously Stuck with only one multimeter/voltmeter ? But, sometimes you need to check 2 or 3 voltages as the same time …
“There is an old-fashioned type of Persistence-Of-View display called Nipkow disk display. I made a desk clock using that principle. My clock has an Arduino UNO heart and a olimex mod-RTC clock module to keep the time*. It features …
“I made a Bluetooth trackball in which all the electronics are inside the ball. The ball is the entire trackball. Here it is in action: Inside the ball there’s a microcontroller and a set of sensors that together with …
“BrowZen correlates your emotional states with the web sites you visit to give you actionable insights about your time on the web. A webcam attached to an NVIDIA Jetson Xavier NX captures periodic images of the user of the computer …
“For another project I urgently needed a relatively large number to indicate a duration. From this this small “sub-project” emerged. Because with the 3D printed frame described here and a couple of WS2812 LEDs you can easily build a seven-segment …
“Plasmonic speed enhancements previously constrained to nanoscale phenomena are replicated on macroscopic devices Visible and infrared light can carry more data than radio waves, but has always been confined to a hard-wired, fiber-optic cable. Working with Facebook’s Connectivity Lab …
“China says it has successfully put its Tianwen-1 mission in orbit around Mars. It’s the first time the country has managed to get a spacecraft to the Red Planet and comes a day after the United Arab Emirates accomplished …
News Chiral Lead-free Hybrid Perovskites Developed for Self-powered Circularly Polarized Light Detection
“The metal-halide perovskites feature the distinctive structure flexibility, which enables the employment of chiral organic cations to construct chiral perovskites. Such chiral perovskites are the promising alternative for circular polarized light (CPL) detection owing to their efficient charge transport of …
“Here, we propose an open-source, portable, autonomous, cheap and easy-to-use device to monitor and record the concentration of CO2 in ambiant air in real-time. Using CO2 as a proxy for respiratory aerosols, the device can help define best practices regarding …
“Individually, California blackworms live an unremarkable life eating microorganisms in ponds and serving as tropical fish food for aquarium enthusiasts. But together, tens, hundreds, or thousands of the centimeter-long creatures can collaborate to form a “worm blob,” a shape-shifting living …