Electronics: 19th August 2025

Name that Ware, August 2025 (bunniestudios​.com). Nostalgic hardware board resembling masking-tape era layouts, hand-soldered components, BGAs and 0201s; commentary on UK101 and Ohio Scientific Superboard II; blog post by bunnie on August 2025

CNC corner joinery comparison (billiam​.org). CNC corner joinery tests compare butt, miter, stepped, rabbet, tongue housing, hammer and finger tenons, mortise variants, and box joints for glue surface, voids, and fabrication time using 1/4" and 1/8" endmills on flat-cut joints

ArmSoM Unveils CM1, a $15 Rockchip Compute Module for Industrial IoT (news​.itsfoss​.com). ArmSoM CM1 uses Rockchip RK3506J quad-core Cortex-A7, adds Cortex-M0, 256/512 MB DDR3L, NAND, microSD; CM1-IO carrier board enables USB, Ethernet, GPIO, wireless, audio for industrial IoT and HMI; modular, long-term production, $15 module, $28.50 with carrier

M8 Headless Cheat Sheet (disquiet​.com). Detailed guide to the M8 Tracker device, its physical layout, button mappings, software porting to Teensy 4.1, and user control methods involving muscle memory and keyboard substitutes

Embedded bare-metal C with Bazel and AVR (popovicu​.com). Cross-compiling embedded C for AVR with Bazel: ATmega328p toolchains, mmcu, DF_CPU, UART setup, AVR-libc, _config/_toolchain definitions, and a UART print demo

Ricardo Cañuelo Navarro: First steps with Zephyr (II) (blogs​.igalia​.com). Zephyr-based Raspberry Pi Pico 2W firmware; native_sim emulation; multi-threading with main and processing threads; GPIO button handling; I2C communication; serial consoles; CMakeLists.txt configuration; Kconfig and prj.conf customization; device tree overlays; emulation for native_sim_64 and Pico2 targets

Embedded Go as a toolchain, Pi Pico 2, Nintendo 64 (embeddedgo​.github​.io). Embedded Go gains toolchain role with two-command install, new egtool, Pi Pico 2 support, N64 MIPS64 GOARCH, and ongoing Bare-metal Go projects and releases

Waveshare Zero Multi Display PCB Design (diyelectromusic​.com). Waveshare Zero module drives up to four displays in parallel on a single PCB; SCL, SDA, RES, DC shared; independent CSn pins up to eight; ESP32/RP2040 compatibility; includes MIDI IN/OUT and optional 5V regulator

Waveshare Zero Multi Display PCB – Expander Board (diyelectromusic​.com). Waveshare Zero Multi Display PCB expander enables up to eight ST7735 color SPI displays with an ESP32-S3, discusses 3.3V regulator load, power concerns, and build steps

NFC reader and alarm/door entry system (revk​.uk). NFC reader using AES on DESFire cards, offline access with per-card keys, door/alarm integration, Abloy locks, mag locks, DIY PCBs, WAGO connectors, 3D-printed enclosures, off-line and internet-managed control, insurance considerations, monitoring and false-alarm handling

Connect your poi to your phone – instead of connecting the phone to the poi (circusscientist​.com). Connect your poi to your phone via hotspot or router mode; SmartPoi D1 mini supports AP, Router Mode, and Hotspot gateway IP for stable IoT control and ongoing internet access

Matter (taoofmac​.com). Matter standard for smart home devices using Ethernet, Wi-Fi, and Thread; interoperability backed by Apple, Google, Amazon; early adoption challenges in compatibility, security, and UX; Matterbridge plugin manager concept introduced

I really like Home Assistant’s triggers and actions model for its flexibility (hamatti​.org). Home Assistant’s flexible triggers and actions enable complex device interactions, like controlling a home entertainment system with custom button presses and combining triggers for personalized automation

A lasting digital clock (vasilis​.nl). Manual clock design vs NTP: Raspberry Pi timekeeping, read-only mode constraints, NTP risks, manual adjustment, real-time clock (RTC) modules, battery dependency, offline reliability, and personal ritual of timekeeping

Freeboard with Dweet.cc (lucstechblog​.blogspot​.com). Dweet.cc replaces Dweet.io in Freeboard via JSON data sources; uses GET calls to lucstechblog and temperature, demonstrates gauge widget setup, testing, and dashboard creation

Thunder & Solar Monitoring (ben​.akrin​.com). Thunder sensor loss during near-strike, solar monitoring with voltage sensing shifts; Phidgets parts sourced from robotshop.com; battery and solar panel voltage sensors, emergency spares, and relayed concerns about EMP effects and geopolitical pathogens

A 1970s DIY modular from Elektor Magazine just got reborn (cdm​.link). Erica Synths rebirth of Elektor Formant DIY modular from 1970s; Elektor Formant System DIY Kit; EDU mki x es.EDU DIY System; Harald Antes collaboration; LEDs, Baltic nights, Kontaktor Festival nostalgia, Elektor Magazine archive

RGB delete on a cheap(ish) keyboard (jg​.sn​.sg). Detailed DIY guide to disabling RGB LEDs on Yinren R108 keyboard via firmware modification using sinowealth-kb-tool, firmware patching, USB capacitance fix, and LED replacement techniques

Monthnotes August 2025 (blog​.duncangeere​.com). Monthnotes: back to work, The Sonification Machine using Raspberry Pi Pico 2 W and Raspberry Pi 5 with RNBO for ambient data sonification (earthquakes, air quality, ISS, solar wind), plus DIY housing, Love Hultén inspiration, Pixlar o Ljud meetup in Malmö, and a Loud Numbers-based EU law fugue installation

Figuring out the GEM Gemini amp circuit (ihatemornings​.com). Explores GEM Gemini organ amplifier circuits from the 1960s, focusing on transistor configurations, schematic discrepancies, pre-amp design, and the role of PNP transistors in audio amplification

Remembering Ted Fletcher (hammyhavoc​.com). Ted Fletcher’s legacy in audio: Alice, tfpro, Airsound; Neve console contrast; Alice 828 mixer; tfpro 503 modules; collaboration with Hammy Havoc; ikigai in high-end hardware

The ESP-Rainbow: Flatter than a Speccy (nicole​.express). ESP-Rainbow uses ESP32S3 with capacitive touch keyboard via 74HC4051 analog multiplexers; ZX Spectrum 48K/128K emulation, USB-C power, web-based file transfer, Manic Miner play, rewind feature, open-source hardware design

First exclusive feature for open ESP32 Wi-Fi stack: standards-compliant meshing (esp32-open-mac​.be). Standards-compliant 802.11s mesh via Ferris-on-Air in Rust, contrasting ESP-MESH/LITE limitations, 802.11s vs proprietary stacks, ESP32 reverse engineering, FoA mesh interface, TCP/IP capabilities

Installing CircuitPython on a Freenove ESP32-S3-WROOM CAM Board (mikecoats​.com). Step-by-step guide to installing CircuitPython on Freenove ESP32-S3-WROOM CAM: environment setup, ESPTool/CircUp/MPRemote usage, flash-id checks, 8MB PSRAM/flash detection, and flashing esptool write-flash with CP firmware

ESP32 – Getting Started with ESP-IDF (shawnhymel​.com). Comprehensive guide on setting up ESP-IDF with Docker for ESP32 development, covering hardware setup, environment installation, project creation, GPIO control, FreeRTOS integration, and flashing procedures

Rust on the LilyGo T-Deck (joshondesign​.com). Rust on ESP32-S3 LilyGo T-Deck with 320x240 display, trackball, keyboard; Embedded Rust setup, esp_hal 1.0 rc, embedded-graphics drawing, input devices, Wi-Fi scanning, HTTP, TLS, SD Card, CNN/NPR sites rendering

Ashet Home Computer (ashet​.computer). The Ashet Home Computer is a DIY, expandable, hackable 80's-inspired computer supporting graphical OS, designed for learning, with completed design and upcoming crowdfunding for manufacturing

Amiga redux (jmtd​.net). Matthew Garrett's Amiga CDTV Doom hack inspires PiStorm and Denise Mini-ITX mainboard explorations: Emu68 bare-metal m68k, RAM expansion, trapdoor RAM, RTC, and modern peripherals

Assembler, Stepper Motors, and a Hotel Pool (happihacking​.com). Assembler, 26kB of 16-bit 286 assembler, Stadshotellet animatronics, stepper motors, cassette soundtrack, 1990s hardware hacking, Haparanda, KGB 1917, Raspberry Pi, YAML choreography, motor drivers, bare-metal code, fintech back-ends, weekly deploys, audits, hospitality nostalgia

Designing relay replacement for IBM 1132 printer carriage control channel PCB (rescue1130​.blogspot​.com). Design of a relay replacement for IBM 1132 printer control involves replacing failed reed relays with modern SPDT reed relays, using a custom PCB, 48V coil considerations, and series dropping resistor

Final tweaks to the 1130 core memory replacement (MRAM) board (rescue1130​.blogspot​.com). MRAM-based 1130 memory replacement: final timing capacitor updates, 3.3V logic, 74HC03 substitution, testing with bench tool, wiring to 1130 power, shielding box considerations, Mu-Metal, conformal coating plan

Those cheap AliExpress 18650 Li-ion cell power bank enclosures suck, actually (ounapuu​.ee). Reusing ThinkPad 18650 cells in TOMO M4 power banks, testing 8/10/20-cell DIY enclosures from AliExpress, USB-C PD issues, battery mismatches, heat up to 50-70°C, fire hazards, and search for modern USB-C PD capable designs

USB-PD Is Pretty Cool (jakob​.space). USB-PD trigger module, 20V buck converter, resistive and PTC heating elements, LED dimmer, USB-C ammeter, silicone insulator, stainless steel dish, 74 Wh power bank, FreeCAD enclosure, 3D printing

Candle Flame Oscillations as a Clock (cpldcpu​.com). Explores candle flame oscillations at ~9.9Hz, using capacitance and photocurrent sensing with microcontrollers like CH32V003, for stable clock signals and electronic candle emulation

Laser Fault Injection on a Budget: DEFCON 33 Showcase (courk​.cc). Budget-friendly Laser Fault Injection Platform for RP2350; DEFCON 33 showcase; DIY rig; 20–30 Ohm VREG_PGND workaround; overvolting DVDD to 1.8V; TLV70311/18 LDO swap; GUI interface; GitHub source; 3D design files

Here be dragons: Preventing static damage, latchup, and metastability in the 386 (righto​.com). Reverse-engineering the Intel 386 I/O: ESD protection with diodes, pull-up polysilicon resistor, guard rings for latchup prevention, and metastability risks in clocked CMOS flip-flops

Reverse Engineering the Raspberry Pi Zero 2W (jeffgeerling​.com). Jeff Geerling describes reverse engineering efforts on the Raspberry Pi Zero 2W, including CT scanning, PCB disassembly, custom PCB replication, and chip pinout analysis for preservation

Hacking Toniebox (20y​.hu). Hacking Toniebox: reverse engineering firmware, replacing SD card, TeddyBench, IFixIt teardown, Linux to Windows workaround, RFID-enabled handcrafted figurines, 10-minute standby safety note, open-source community

PVI-xxx Inverter DSP Reveng (paulbanks​.org). DSP reveng of PVI-xxx inverter: MPPT and inverter DSPs, bootloader autobaud, 16-bit payloads, libasm, custom disassembler, Ghidra extension for TI C24x, f2407.h, UART/SPI programming, flash dump, bootloader quirks, ISP via RJ45, processor extension JSON output

ENC28J60 works! (pdp2011​.sytse​.net). ENC28J60 ethernet chip support added for PDP-11/DEUNA XU core; tackling 10Mbps quirks, timing, MAC/PHY registers, promiscuous mode workarounds, and FTP throughput ~180 KB/s

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