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December 23, 2025

The Electronics Maker 23-12-2025

DIY home monitoring projects, retro hardware hacks, creative coding

🌦️ Sensors & Home Monitoring

Solar Radiation (Sun) Shield for Temperature Sensors (nuxx​.net). DIY solar radiation shield for multiple temperature sensors using a two-piece design and chain-link fence mount

A Homebuilt CO2 Meter as a Virus Risk Proxy (shallowsky​.com). DIY ESP32-CircuitPython CO2 meter with SCD-40, display, battery, UI tweaks, and a GitHub airCO2 project

Relearning What Support Means by Building an Orange Pi Weather Station (mbrizic​.com). Building an Orange Pi Zero 3 weather station, GPIO, DHT-11 sensor, Python and Adafruit libraries amid limited official support

Solar power system installed (blog​.bembel​.net). Installing a small solar setup, DIY inverter with Hoymiles-wifi, Python scripts, MQTT, Docker, and Raspberry Pi integration

The chaos begins: Building my Home Assistant smart home from scratch (frenck​.dev). Chaos-filled journey as Frenck builds a Home Assistant smart home from scratch using DIY setups and unknown devices

đź”§ Repair & Troubleshooting

I seem to be fixing a few multimeters recently.... (river​.cat). Fixing erratic readings on Extech EX330 by tightening a loose voltage jack connection and cleaning the rotary switch

Ryobi angle grinder non-repair. (river​.cat). Investigating a failed Ryobi R18AG7 angle grinder; big TVS on PCB between battery and motor suspected to be damaged

My Worst Crash Yet of the DJI Air 3 (Can I Fix It?) (adventuretaco​.com). Owner documents a DJI Air 3 crash, DIY repair attempts, parts replacement, and camera/home instrumentation using soldering tools and online tutorials

🛠️ Maker Fabrication Projects

Custom Knife Storage – YT Makers Secret Santa 2025 (beckystern​.com). DIY illuminated display case and fabric knife roll using NeoPixel LEDs, Arduino Nano ESP32, WLED, 3D printed logos, and a steel-glass cabinet

Laser Cutter: New 24 V Power Supply (softsolder​.com). Brackets and rivnuts DIY install for a 24 V laser power supply using OpenSCAD drill template and hand-drilled mounting hardware

Laser Cutter: Rotary Stepper Driver (softsolder​.com). Rotary stepper driver hacked into an OMTech CO2 laser using a separate driver and switch to protect a NEMA 17 motor from a 3.5 A Y-axis setup

OpenSCAD is kinda neat (nuxx​.net). OpenSCAD used to generate a parametric battery holder, showcasing code-based CAD design and iteration

🕹️ Retro Hardware Hacking

Building a Joystick Tester (lyonsden​.net). Builds a compact joystick tester for Commodore/Atari using through-hole PCB, LEDs, DB9 port, and a 3V battery

SidecarTridge Year One (sidecartridge​.com). SidecarTridge Year One covers building a cohesive retro-hardware ecosystem, RP2040/RP2350 platforms, manufacturing shifts, Amiga vs Atari ST, and future projections

Honey, I Shrunk the Chat64 (pickledlight​.blogspot​.com). ESP32 to C64 data lines, shift register control, and firmware constants for a custom cartridge interface

Revised design and producing a new board for 1130 MRAM project (rescue1130​.blogspot​.com). Discrete transistor sinking replaces open-collector NANDs to drive 1130 MRAM sense pulses, with BSV52 fast transistors and 74LVC08A gates

They don't make them like that any more: Denshi block electronics kits (kevinboone​.me). Nostalgic look at denshi block electronics kits from Japan (Gakken), their use, evolution, and the author’s personal experiences

🎛️ Creative Code & Sound

Vu-Perc 2 (gieskes​.nl). New vu-perc with two sounds, CV-controlled needle for the vu meter and an adjustable knob

Tangible Code: Making Ruby Visible, Touchable, and Understandable (rubystacknews​.com). Tangible Code: Ruby seen and touched via PicoRuby, Ruby processing, and ruby.wasm at RubyWorld 2025

Creative Coding on a Raspberry Pi 5? (timrodenbroeker​.de). Raspberry Pi 5 performance fuels creative coding explorations with Processing, p5.js, and open-source tooling

📡 ESP32 Embedded Deep Dives

Getting ESP32-C3 Super-mini to do ESP-NOW (indiantinker​.bearblog​.dev). Compact ESP32-C3 Super-mini boards struggle with ESP-NOW when mounted on perfboards; avoid soldering, use a USB-C carrier instead

The ESP32 ADC (cceckman​.com). Rust on ESP32, ESP-IDF, ADCs, calibration, and voltage dividers for battery monitoring

How to not end up in a Louis Rossmann video (sschueller​.github​.io). Stefan Schüller discusses regulatory steps, open vs closed systems, OTA updates, and open data for a consumer-friendly Station Display project

A Definitive Guide to Running PicoRuby on ESP32 (ESP-IDF 5.x) (rubystacknews​.com). Definitive guide to running PicoRuby on ESP32 with ESP-IDF 5.x, detailing setup, submodules, partitioning, and debugging

📚 Academic Research

Relevant HAL Interface Requirements for Embedded Systems (arxiv:cs). Defines relevance for HAL requirements and proves which ones prevent hardware-failure bugs using model checking on SPI spidev issue reports. Helps makers write safer drivers

Checking the HAL Interface Specification Continuously, Right from the Start (arxiv:cs). Checks HAL interface specs continuously from early skeleton code, reusing model-checker abstractions across revisions. Keeps embedded projects reliable as features grow, reducing crashes and damage

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