The hardware setup shown below includes the Arduino Uno R4, a DHT11 sensor, and the built-in Wi-Fi for email alerts. The DHT11 is connected with VCC to 5V, GND to ground, and the data pin to Digital ...

A lot of making goes on in this community these days, but sometimes you’ve just gotta do some old fashioned hacking. You might have grabbed an old Speak and Spell that you want to repurpose ...

Vice Admiral Trey Whitworth, USN (Ret.), has been announced as the President of National Security for r4 Federal. Vice Admiral Whitworth brings over 36 years of national security leadership to r4 ...

This project demonstrates the interfacing of an Infrared (IR) sensor with the Arduino UNO R4 WiFi to detect obstacles in real-time. It utilizes digital signal processing to monitor the environment and ...

At first glance, it may look like [Rybitski]’s 7-segment RGB LED clock is something that’s been done before, but look past the beautiful mounting. It’s not just stylishly framed; ...

Minecraft remains one of the best games of all time over a decade on from its release, but spending such a long time in one game could lead to you running out of ideas. We've been there: you've ...

Our museums, education, and research centers work at intersections that spark imagination and encourage discovery—between art and the environment, space exploration and women’s history, cultural ...

The reinvented 4 isn’t quite so extreme in its pursuit of utility; it doesn’t quite match the original’s 22cm or so of fairly unregulated suspension travel (neither, frankly, would we want it to); and ...

Visitors who crossed a certain threshold at Agritechnica 2025 in Hanover, Germany, this past November became awash in a palette of electric blue light. It may have felt like they were suddenly thrust ...

From lens focal lengths and fill-flash to portraits, macro or stunning landscapes there are techniques for everyone. Learn how to use metering, considering composition and shoot everything from ...

Part One: Meet the successor to the R4, the more powerful and advanced BPI-R4 Pro Router Board. Following the successful launch of the R4 and R3 router series, the Banana Pi team recently launched ...