The online store of somebody in England who makes small, specific purpose devices for electronics hobbyists. If you need something odd, chances are he's made such a thing already.
Simple board to test various USB cables! (Note the USB standard helps to identify these USB-C, cables that are compliant with the standard will have selected pins according to cable and connector specification release).
Plug in your cable to both sides and see which signals light up!
FOR CABLE USE ONLY. DO NOT EVER PLUG THIS IN TO A DEVICE, THE PINS ON ONE SIDE ARE ALL SHORTED TOGETHER AND THAT COULD BREAK IT!
You can buy the boards from just about any manufacturer and build them yourself. Hopefully your fine soldering skills are up to the task (mine aren't)...
An open-source, 35mm full-frame (36mm x 24mm) CCD mirror-less interchangable lens camera (MILC). The original goal of this project was to create a digital camera back to convert SLR cameras to DSLR cameras, but has since changed to build a full MILC.
This means that the project includes building a logic board with a system-on-a-chip, optical and ranging sensors, ports, storage media, an LCD screen... this is not a beginner's project. Nor is it a project for casual photographers.
Honestly, this site started as a joke. A weekend script tossed together to consolidate PCB orders from the Dangerous Prototypes team. It sat quietly and unnoticed until Hack a Day told the world. Turns out people like cheap, no-nonsence PCBs at near-China local prices and no-markup shipping. The original script, not even worthy of the word "store", ran for three years and handled tens of thousands of orders.
Over that time we've hacked together new interfaces to cool services in China, and cobbled them together into this store. It is highly experimental and many things are still a bit rough around the edges! Welcome, the PCBs are cheap and the 3D printing is amazing!
They even have Hacker Shops, which is where folks sell their projects (sometimes just boards, sometimes kits, sometimes assembled things).
This board helps test floppy drives of several different types:
- Standard IBM 34-pin drives (3.5" and 5.25")
- IBM PS/2 40-pin drives with embedded power connections
- Shugart 8" floppy drives
- Apple II (original Disk II)
- HP 34-pin drives (as found in many 9122 enclosures)
- HP 26-pin drives (found in older enclosures and machines)
- IBM 31SD and 51TD floppy drives
The board basically breaks out every signal to a control switch, indicator LED, or test point. It's not designed as a flux imaging tool--it's just a simple way to exercise features of a floppy drive.
There is an optional section of the board that is a step controller for the head stepper motor. This controller has an encoder wheel and a small 7-segment display. It will let you select and automatically step to a particular track.
Uses an ATmega328PB microcontroller as its CPU.
Scanned, browsable copies of every catalog Radio Shack ever released, from the very first in 1939 up until their last gasp in 2011.
Best photos and technical documentation of retro computers, TVs and digital watches that are part of my collection. I document them as my time permits.
All In One Cable For Ham Radio transceivers including Baofeng, Quansheng and many other makes of portable HT transceivers. This adapter incorporates thee functions: A USB sound card to convert the receive/transmit audio from the transceiver to USB, a USB to serial adapter to allow programming of your transceiver from radio software such as CHIRP, and PTT control to allow automatic receive & transmit using either serial port settings (DTR & CTS) or the CM108 standard supported by popular software (including Dire Wolf.) You can use this for APRS, Packet Radio, Winlink, Programming or any other sound card data mode.
Compatible with all portable radios that use the Kenwood Style connector.
GitHub: https://github.com/skuep/AIOC
Given an Arduino compatible microcontroller or Raspberry PI (experimental), JTAGenum scans pins[] for basic JTAG functionality and can be used to enumerate the Instruction Register for undocumented instructions. Props to JTAG scanner and Arduinull which came before JTAGenum and forwhich much of the code and logic is based on.
Two major collections of hobbyist and constructor's books from the UK. There are freely downloadable PDFs of all kinds of radio and electronics related stuff here.
Computer Scientist
Electrical Engineer
Innovator
Systems Architect
Research Leader
Engineering Educator
Adventurer & Visioneer
A business card which is also a cell phone that is programmed to call the person on the card. This is really cool.
How to hack a microSD-to-SD card adapter to work with a 3.3 volt microcontroller.
The Hacktic Demon Dialer is a compact inband signalling device, aka a blue box. With many additional features. The DemonDialer was designed by Hacktic in 1991, see hacktic 14-15. The original design notes and schematics have been located, scanned, and cleaned up. The documentation has been assembled into PDFs for printing and binding.
sf-hab.org's RP2040 based PicoBalloon Tracker PCB generation 1 for STEM education, designed by AG6NS.
They sell QRP kits - ham radio kits that are designed for low power transmission and reception. You can go remarkably far on just five watts. They have transceivers, balloon trackers, filters, APRS modules, and more.
The SIDKick pico ("SKpico") is a drop-in replacement for the SID 6581/8580 sound chips in the Commodore 64 and 128 computers. It has been designed as an inexpensive alternative to other replacements while not making compromises regarding quality. It consists of a simple interface board and a Raspberry Pi Pico (or compatible clone). The emulation is based on an extended version of reSID 0.16, and includes a few additional features.
Emulates the 6581 or the 8580 in single or dual SID mode. Has a built-in configuration menu that is accessed with a BASIC command (SYS 54301 for the c64, SYS 54333 for the c128). Supports stereo output if you hook a DAC up.
Uses surface mount components so this is not a project for the inexperienced or the faint of heart.
An open standard for a common interconnect between headsets and radios.