This noise generator has an adjustable bandwidth and a consistent amplitude no matter what bandwidth is selected. When working on a recent Design Idea for an adjustable filter, I wanted to use an ...

ESP32-S3 N16R8 · 16 MB Flash · 8 MB PSRAM · Dual USB-C · Runtime-probed modules A hand-built Flipper Zero on the ESP32-S3 N16R8. This repository is a downstream fork of the Bruce firmware, adapted to ...

CiferTech has recently introduced the nRFBOX V2 ESP32-based wireless hacking tool designed for spectrum analysis, jamming, BLE device emulation, and more. The device is built around an ESP32-WROOM-32U ...

I needed to come up with a communications device to transmit a handful of bytes, every hour, from a small off-grid solar system to my shop about 150 feet away. The first thought was Wi-Fi, but I ...

Remote patient monitoring is a critical tool for diagnostics and therapeutics, especially in sparsely populated areas. Wearables with clinical-grade sensing fidelity provide a suitable platform ...

Considering it's been almost impossible to buy a Raspberry Pi for about a year because of supply chain shortages, it's remarkable how many people continue to create interesting and increasingly useful ...

Using a small custom PCB, a Raspberry Pi Pico 2 microcontroller, a scintillator (typically NaI (Tl)) and SiPM you can build your own gamma spectrometer! The needed processing and multi-channel ...

I built a DIY oscilloscope & spectrum analyzer for my modular synthesizer using an Arduino and an SSD1306 OLED, so here is a memo of the project. This is the 25th project in my DIY modular synth ...

I was having a chat recently with someone, and it surprised me that she had an amateur radio license. I suppose it shouldn’t have come as much of a surprise; after all, getting a ham radio license is ...

One challenge of teaching chemical analysis is the proliferation of sophisticated, but often impenetrable, instrumentation in the modern laboratory. Complex instruments, and the software that runs ...