Electronics: 13th May 2025

Environmental monitoring (revk.uk, 2025-05-08). RevK discusses environmental monitoring tools including pressure, temperature, humidity, and CO₂ sensors, highlighting their use in data centers and home/office settings to improve air quality

Infra Project 2025 (terokarvinen.com, 2025-05-09). Infra Project 2025 showcases diverse ICT projects including SisuCTF for pentesting, Museum3D for 3D gameplay, JES plant monitoring, RoomTracr for occupancy tracking, and AIMLOps enhancements, utilizing tools like Arduino, MQTT, and Grafana

Rack Attack (codepope.dev, 2025-05-10). A DIY rack build features PoE-enabled devices, including a Minisforum S100 PC and JetKVMs, as well as updates on Lora and Meshtastic for low-power radio networking

Sonar Is Back: A Fresh Take on BLE Device Counting (vpetersson.com, 2025-05-07). Sonar, a BLE device counting tool, has been revamped using FastAPI, incorporating modern Python tooling and Docker for efficient deployment, enhanced monitoring APIs, and improved code quality with comprehensive testing

Booting the RP2350 from UART (pfister.dev, 2025-05-11). The RP2350 microcontroller can be booted via UART, allowing firmware to be loaded easily. A simple Python script facilitates transmission, with additional features like RS-485 conversion for extended distance connections

Espressif’s Automatic Reset (qsantos.fr, 2025-05-09). Exploring how Espressif enables automatic board resets during firmware uploads, using UART connections and DTR/RTS manipulation to facilitate a seamless programming experience

Raspberry Pi pico with Bluetooth (lucstechblog.blogspot.com, 2025-05-09). Connect a Raspberry Pi Pico to your phone using Bluetooth with an HC-05/HC-06 module and learn MicroPython programming with an Android app designed in MIT's App Inventor to control LEDs remotely

Xenolab – Rasp Pi monitor for my pet carnivourus plants (github.com, 2025-05-10). Xenolab is a Raspberry Pi-based monitoring system designed for exotic carnivorous plants, utilizing 3D printing and electronics for an over-engineered yet entertaining endeavor in plant care

This 90s cable TV simulator brings the old nostalgia you needed (neowin.net, 2025-05-08). A DIY 90s cable TV simulator built using Raspberry Pi recreates nostalgic cable TV experiences by simulating old programming, featuring vintage-style channels, and even incorporating commercials typical of the era

My blog now runs on a Raspberry Pi at home (chrisdone.com, 2025-05-09). A blog now operates on a Raspberry Pi using OFNL internet, gigabit connection, static IPv4, and features Caddy server and GitHub webhooks, maximizing SD card longevity through tmpfs for logs and storage

Installing Whoogle on a Raspberry Pi Zero 2 W in 2025 (theprivacydad.com, 2025-05-11). Learn how to install Whoogle, an ad-free search engine, on a Raspberry Pi Zero 2 W using Docker in 2025, requiring manual image building due to ARM CPU compatibility issues

How I Turned My Old Hi-Fi Speakers into Bluetooth Ones with Raspberry Pi (itsfoss.com, 2025-05-10). Reviving old hi-fi speakers with a Raspberry Pi, DAC, and Bluetooth functionality, this DIY project highlights soldering, audio setup, and configuring software like Shairport Sync and Raspotify for seamless streaming

Building the PiSpot Watch—An IoT Adventure (geiser.cloud, 2025-05-10). Built with a Raspberry Pi Zero, the PiSpot Watch is a quirky smartwatch equipped with an e-ink display and automated deployment using Ansible, embodying a journey of hardware challenges and learning

InkyDesk (moscardino.net, 2025-05-07). An e-ink desk calendar project utilizing a Pimoroni InkyWHAT and Raspberry Pi Zero, leveraging Python scripts, ASP.NET Core API, and QuestPDF for rendering, despite challenges like screen resolution and font rendering

Migrating my Kubernetes Control Plane to Raspberry Pi 5 (blog.mei-home.net, 2025-05-12). Migrating a Kubernetes control plane from Raspberry Pi 4 to Pi 5 resolved instability issues, utilizing NVMe SSDs and highlighting performance metrics like etcd request errors and API server aborts

The Screamer – A yell-on yell-off light (rulethepla.net, 2025-05-08). The Screamer uses a Sonoff S31 smart switch and an ESP32 for scream detection, enabling users to control lights by yelling, showcasing innovative DIY tech integration with ESPHome and Microphone-based input

Final stretch for e32wamb: PCB, cables, antenna holder (wejn.org, 2025-05-11). The e32wamb project advances with a custom PCB using Seeed Studio’s XIAO ESP32C6, automation via KiCad, and challenges with crimping connectors while designing an antenna holder for improved Zigbee performance

Boxie – a Gameboy-Esque Audio Player (hackaday.com, 2025-05-11). Boxie is a custom-built audiobook player using an ESP32-S3 microcontroller and microSD storage, designed for toddlers, enhancing durability and usability compared to existing solutions like the Toniebox

Strain gauge made out of PCB (github.com, 2025-05-07). A PCB strain gauge with integrated amplifier effectively measures micrometer-sized deflections, features a customizable sensing element, and allows use with Seeed Studio XIAO RP2040 or external microcontrollers

Open Hardware Ethernet Switch project, part 1 (serd.es, 2025-05-09). An open hardware Ethernet switch project leveraging FPGAs, QSGMII PHYs, and innovative designs explores past challenges and future aspirations, highlighting developments in high-speed digital design and network equipment

Open Source 8-Voice Analog Polyphonic Synthesizer (polykit.rocks, 2025-05-08). An open-source 8-voice analog polyphonic synthesizer featuring programmable voice cards with voltage-controlled oscillators, MIDI input, and a multimode filter, designed for DIY enthusiasts and powered by an Atmel2560 microcontroller

DIY Driving Simulator Pedals (hackaday.com, 2025-05-08). DIY enthusiasts can create custom driving simulator pedals using hall effect sensors, load cells, and Arduino, allowing for adjustable design and improved experiences without the high costs of commercial options

I’ve built an IoT device to let my family know when I’m in a meeting (nullonerror.org, 2025-05-11). An IoT device named Tabajara informs family members when someone is in a meeting by lighting up at the office door, utilizing an ESP32, mDNS, HTTP requests, and a Python daemon checking camera usage

MicroPython Robotics (kevsrobots.com, 2025-05-11). Build and program robots using MicroPython on the Raspberry Pi Pico, covering motor control, advanced sensors, and autonomous behavior. Explore practical projects like LidarBot and tic tac toe-playing robots

A Quick Project That’ll Save Me Hours Every Week (thestockpot.net, 2025-05-09). A DIY 3D-printed Bluetooth foot pedal for teleprompters, using an ESP32 microcontroller, enhances workflow by allowing play/pause, rewind, and speed controls without physical interaction, saving time during video shoots

Starlink User Terminal Teardown (darknavy.org, 2025-05-09). DARKNAVY disassembles the Starlink user terminal's antenna, revealing technical components like a custom quad-core SoC, STSAFE-A110 security chip, and the potential for packet logging in satellite communications

Rebooting An 1973 Art Installation Running On A Nova (hackaday.com, 2025-05-12). A son recreates his father's 1973 art installation using modern tech, including WS2811 LEDs, a Teensy 4.0, and Raspberry Pi 4, while successfully emulating the original code with the SIMH Nova emulator

Tearing Down a Forgotten Video Game (hackaday.com, 2025-05-11). A teardown of the forgotten Video Volley console reveals a hand-built design featuring a National Semiconductor chip and simple sliding potentiometer controllers, prompting curiosity about its production and market presence

Hardware Built For Executing Python (Not Pythons) (hackaday.com, 2025-05-06). PyXL is a new project that enables Python to be executed directly in hardware, promising speeds up to 50x faster than MicroPython by utilizing a custom toolchain and dedicated silicon execution

Computeriter Emulator Hardware Design (insanity4004.blogspot.com, 2025-05-10). The Computeriter emulator connects a laptop to CDC 161 electronics, using technical components like PIC18F45K50 microcontroller, opto-isolators, and solid-state relays for signal adaptation and control functions

Computeriter Emulator Software Design (insanity4004.blogspot.com, 2025-05-11). Reece experiments with the Computeriter Emulator, detailing the integration of a PIC microcontroller and challenges with TBS switch state management and input disconnects using CDC 161 logic and LCC110 relays

Fan Service (flak.tedunangst.com, 2025-05-11). OpenBSD driver development for ASUS laptops using ACPI and WMI to manage fan speed, resolve byte order issues, and integrate device states for keyboard backlight and fan profile settings

PoE-powered GPIB Adapter with Ethernet and USB-C Support (hackaday.com, 2025-05-10). This PoE-powered GPIB adapter features an ATmega4809 MCU and Wiznet W5500 for Ethernet, supporting VXI-11.2 and Prologix protocols, with a BOM under $50 and power via PoE or USB-C

An LLM for the Raspberry Pi (hackaday.com, 2025-05-11). Microsoft's Phi4 mini-reasoning LLM can run on a Raspberry Pi, but with limitations. It performs slower than a GPU PC, taking up to 10 minutes to answer simple questions like the 'Alice question'

Supercon 2024: A Hacker’s Guide to Analog Design in a Digital World (hackaday.com, 2025-05-06). Nanik Adnani's talk at Supercon 2024 explores the significance of analog design in today's digital world, covering key concepts like PHY interfaces, circuit challenges, and essential learning resources like LTspice and analog CMOS design

Testing different temperature sensors for a DIY thermostat (pappp.net, 2025-05-06). Oleg Tarasov tested six temperature sensors sourced mainly from China to assess their reliability for a DIY thermostat project, learning about the precision and lag in measuring room temperatures

Hacking with Frida (Part II) (zetier.com, 2025-05-08). Explore how to deploy Frida on Raspberry Pi with OpenWrt for vulnerability research, addressing challenges of end-of-life devices with limited software tools like GDB and Python

How To Build A Smartwatch: Picking A Chip (ericmigi.com, 2025-05-12). Exploring key considerations in selecting components for building a smartwatch, including STM32F2 and Nordic nRF52840 MCUs, with insights on the significance of software compatibility and power management

In search for a better filter (blog.narf.ssji.net, 2025-05-10). Exploring the effectiveness of linear vs. polynomial calibration for water level sensors, the author discusses the challenges of low-pass filtering and introduces Kalman filters for improved readings