Remote access devices like IP KVMs are usually built around powerful single-board computers such as the Raspberry Pi. But ...

The ESP32 keeps finding new jobs in my house.

Since the launch of the first commercial Raspberry Pi — the then $35 Model B — single-board computers (SBCs) have drastically changed what can be considered a computer. With Raspberry Pi serving as ...

We are providing an unedited version of this manuscript to give early access to its findings. Before final publication, the manuscript will undergo further editing. Please note there may be errors ...

This C library reads rotation data and switch presses from rotary encoders. It supports mechanical encoders like KY-040 (HW-040), or EC11. It uses GPIO_IRQ interrupts for automatic event detection - ...

SSB (Single Sideband), CW and FM transmitter for the 2.4 GHz band, designed for communication via the narrowband transponder of the geostationary satellite QO-100 (Es'hail 2) and general 2.4 GHz ...

Recently, I was working on a vision system for an underwater robot. The requirements seemed straightforward on paper but proved tricky in practice:Hardware: Raspberry Pi 5 connected to 3 USB cameras ...

Abstract: Autonomous navigation in GPS-denied environments, such as tunnels, forests, and urban canyons, requires robust localization and obstacle avoidance without reliance on satellite signals. This ...

In a nutshell: Canadian hardware maker Ploopy is now accepting pre-orders for its latest input device. The Ploopy Knob is a 3D-printed, open-source rotary encoder featuring a high-precision sensor ...

Built a compact curve tracer with the Raspberry Pi Pico, ILI9341 touchscreen, and a custom power board — supports bipolar transistors (npn/pnp), diodes, JFETs, and MOSFETs. Here’s a preview of the ...