Electronics: 27th May 2025

Stylus Synth Should Have Used a 555– and Did! (hackaday.com, 2025-05-20). An all-analog stylus synth project by EE student DarcyJ utilizes the NE555 timer for its main oscillator, features multiple octaves, and incorporates a trim pot for tunable notes and vibrato depth

Honey, I Blew Up The Line Follower Robot (hackaday.com, 2025-05-21). Austin Blake has transformed a childhood project into a full-size line-following robot using 32 IR sensors, an Arduino Mega Pro Mini for logic, and a modified Crazy Cart chassis for enhanced maneuverability

A low voltage tube amp! (justanotherelectronicsblog.com, 2025-05-21). This project details the design of a low voltage hybrid tube headphone amp using ECC86, diamond buffer configuration, and a constant current source to achieve high fidelity with minimal distortion

That was easy: A keyboard for vibecoding (blog.fsck.com, 2025-05-22). In 2025, a customizable keyboard for coding is developed to simplify interactions with AI coding assistants like Claude and ChatGPT, utilizing a Raspberry Pi Pico to create a 'continue' button for coding tasks

Train Simulator Controller: CAN-Connected Air Gauge, Part 2 (z80.me, 2025-05-25). Christopher Mitchell progresses on his Train Simulator project by modularizing an air gauge with a CAN controller and stepper motor, adapting design challenges for better integration into a physical dashboard

An RPi bridge to the retro lab with NetBSD (rubenerd.com, 2025-05-25). Ruben Schade uses an old Raspberry Pi and NetBSD to create a wireless bridge for retrocomputers, addressing connectivity issues in a newly set up apartment without wiring Ethernet to every room

Frigate: NVR With Object Detection on Raspberry Pi 5 & Coral TPU (helgeklein.com, 2025-05-24). Frigate is an NVR software for Raspberry Pi 5 with Coral TPU that enables local object detection and video stream storage, improving surveillance efficiency by filtering out irrelevant movements

Train and Weather Tracker with Raspberry Pi and E-Ink (jakobmaier.at, 2025-05-22). A Raspberry Pi Zero and Waveshare 7.5' E-Ink display create a real-time train and weather tracker, utilizing public transport APIs for Vienna and external temperature data from Geosphere Austria

Home Automation Without the Megacorps (chameth.com, 2025-05-21). Home automation setup using Raspberry Pi 4, Sonoff USB Zigbee adapter, and zigbee2mqtt for local control, enhancing convenience through automations like temperature monitoring and controlling various devices without megacorp dependencies

Building my own train departure board (because why not?) (markwilson.co.uk, 2025-05-26). Mark Wilson builds a custom train departure board using a Raspberry Pi Zero W and a modified 3.12″ OLED display, leveraging UK National Rail open data for real-time train information

Frigate – Manage IP Camera with a Raspberry Pi (disk91.com, 2025-05-23). Frigate transforms a Raspberry Pi into a Network Video Recorder with Docker, supporting IP camera management and AI-based analysis, while using NVMe storage and facilitating easy configuration of camera streams

ESP32 as a Zigbee console (wejn.org, 2025-05-25). Learn how to set up the ESP32-C6 as a Zigbee console with installation steps, usage tips, and troubleshooting for the Zigbee CLI application from the Espressif SDK

As The World Burns, At least You’ll Have Secure Messaging (hackaday.com, 2025-05-20). Bertrand Selva's LoRa communicator leverages a Pi Pico, utilizing a one-time pad encryption method for secure messaging, with generated keys stored on an SD card for enhanced communication resilience

Adding Configurations to ESP-IDF projects (ncona.com, 2025-05-21). Learn to manage ESP-IDF project configurations using Kconfig, creation of sdkconfig files, and tools for modifying settings like Bluetooth and custom project configurations

ESP32 S3 DevKit Experimenter PCB Build Guide (diyelectromusic.com, 2025-05-25). A guide on building the ESP32 S3 DevKit Experimenter PCB with instructions for MIDI connections, audio PWM output, and configuration options, utilizing components like analog potentiometers and various headers

ESP32 S3 DevKit (diyelectromusic.com, 2025-05-20). The ESP32 S3 DevKitC is explored, with discussions on GPIO usage, serial ports, and comparisons to the original ESP32. The author notes differences in performance, pin configurations, and device compatibility

Is making a Smart light bulb easy ? (disk91.com, 2025-05-23). Creating a smart light bulb involves challenges, including coding for light intensity, color hue, and security aspects using tools like ESP32 microcontroller, bootloaders, flash memory encryption, and dual bank firmware design

Ubuntu problem with ESP8266 and Thonny solved (lucstechblog.blogspot.com, 2025-05-23). Luc Volders resolved an issue with Thonny and the ESP8266 on Kubuntu 24.04 by removing the BRLTTY service and assigning USB access rights, enabling successful recognition of the device

Bringing up a custom RP2040 board (andykong.org, 2025-05-21). Learn to design a compact custom PCB featuring the RP2040 microcontroller, using tools like picotools, while addressing USB programming challenges and essential circuit components for effective deployment

Evolution of my code and PCBs (revk.uk, 2025-05-22). Recent developments in RevK®'s code and PCB designs have transformed a simple E-Paper Display system into a comprehensive signage and environmental monitoring solution using various sensors, including BLE and CO₂ sensors

ITXPlus Project Aims to Recreate the Mac Plus Logicboard (512pixels.net, 2025-05-21). The ITXPlus project aims to recreate the Mac Plus logic board using modern components, featuring a mini-ITX form factor, reverse-engineered custom parts, and upgrades like a replacement for the Sony sound chip

Working On Open-Source High-Speed Ethernet Switch (hackaday.com, 2025-05-20). Andrew Zonenberg is developing an open-source high-speed Ethernet switch using XCKU5P FPGAs and RTL engineering principles, aiming to create affordable Ethernet hardware following years of progress since 2012

Adding SPI & AXI to NEORV32 Design (ejaaskel.dev, 2025-05-20). The NEORV32 FPGA design is enhanced with an SPI interface and external memory, addressing metastability issues and providing detailed VHDL code for a functional SPI receiver

Electronics: KiCad PCB fabrication and the cap-fun project (hunsley.io, 2025-05-20). KiCad PCB design tutorial exploring capacitor behavior through a custom educational demo board, demonstrating circuit design, fabrication techniques, and interactive electronics learning

Trashed Sound System Lives to Rock another Day (hackaday.com, 2025-05-22). Bill salvages a discarded sound system by repairing physical damage and replacing the remote control functionality using ESP8266 and ESP32, enabling the use of a modified I2C protocol for control

Putting the magic smoke back into my Instant Pot (stackallocated.com, 2025-05-21). After my Instant Pot stopped heating, I diagnosed the issue, found a failed solder joint, and repaired it using basic tools like a soldering iron, emphasizing the importance of user-friendly manuals and right to repair

The Xenon Death Flash: How a Camera Nearly Killed the Raspberry Pi 2 (magnus919.com, 2025-05-23). A flash from a xenon-equipped camera triggered a power failure in the Raspberry Pi 2, exposing vulnerabilities in modern chip design and the challenges posed by optical interference in semiconductor technology

Upgrading the SwarmTurret (alexmeub.com, 2025-05-23). Major upgrades to the SwarmTurret include simplified assembly, improved stability, enhanced accuracy with camera repositioning, direct motor control, a performance boost with Raspberry Pi 5, integrated power supply, and intuitive web app enhancements

Building a Virtual Mars Rover with SPARK and Rust (blog.adacore.com, 2025-05-23). A simulation project integrates SPARK and Rust to create a virtual Mars Rover, utilizing C bindings for inter-language communication and implemented with a kinematic model, collision avoidance, and a 3D visualization in Bevy

PentaPico: A Pi Pico Cluster For Image Convolution (hackaday.com, 2025-05-20). A cluster of five Raspberry Pi Pico microcontrollers is used for image convolution, processing tasks in parallel, while highlighting challenges and learning outcomes from the project. Data distribution impacts performance significantly

Embedded Systems Programming with Rust: Safety and Performance for Resource-Constrained Devices (ataiva.com, 2025-05-25). Rust's memory safety, zero-cost abstractions, and strong type system make it ideal for embedded systems. Essential tools include cross-compilation support and debug capabilities via rustup, cargo-binutils, and probe-run for efficient development

Benchmarking Energy and Latency in TinyML: A Novel Method for Resource-Constrained AI (arxiv:cs, 2025-05-21). A benchmarking methodology for TinyML on resource-constrained devices, testing STM32N6 MCU's NPU with energy and latency measurements, reveals efficiency improvements through reduced core voltage and clock frequency for pre- and post-processing phases

Raspberry Pi Modems (niiccoo2.xyz, 2025-05-23). Exploring Raspberry Pi modem setup, including Waveshare SIM7600A-H, SSH debugging, SIM card issues, and interfacing challenges using GPIO and AT commands for an E-Ink phone project