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Floppy emulator, RAM expansion and network interface for Amigas using an FPGA, and some UKNC reverse-engineering. Includes a picture of how to mount the odd Russian chips with staggered rows of pins.
to 1801 amiga electronics fpga retrocomputing retrotech soviet ... on 22 January 2016
Sean Riddle's Home Page - IC Decapping edit / delete
Die shots of various games/consumer electronics chips. Lots of other interesting stuff about the workings of arcade games here too.
to arcade chip decap electronics games ic reverse-engineering ... on 31 December 2015
WarrantyVoid - the electronic sound toy and keyboard modification site edit / delete
Aimed at circuit-benders, but has a very comprehensive list of home keyboards with descriptions of the technology they use and the sounds you can get out of them. I came here looking for details on the Casio CZ-230S I'd just bought...
to casio circuit-bending electronics instrument keyboard retrotech synth yamaha ... on 31 December 2015
How to get the SR60 earphones apart. Mine have had enough abuse over the last 10+ years that I need to replace the cable...
to electronics grado headphones repair ... on 27 November 2015
Lo-tech 8-bit IDE Adapter rev.2 - lo-tech.co.uk edit / delete
Homebrewable IDE adaptor for early PC hardware. Fortunately the ancient hard disk in my AT still works...
to electronics hard-disk ide isa pc retrocomputing ... on 20 November 2015
Lee Hart's Lead-Acid Battery Charging Basics edit / delete
A nice summary of how to charge a lead-acid battery. It works.
to battery charging electronics lead-acid ... on 17 November 2015
Hobbit's techie-rants edit / delete
Some stuff about theatre lighting, and lots of detail about reverse-engineering and extending the Toyota Prius. I have no intention of buying one but it's interesting reading!
to car electronics ev lighting prius reverse-engineering theatre ... on 15 November 2015
The Life of Kenneth: 555 Constant Current Lead-Acid Battery Charger edit / delete
To implement the state machine of a lead-acid battery charger, you need a couple of comparators and a flip-flop. Which is what's in a 555! Neat design.
to 555 battery charging electronics lead-acid psu ... on 15 November 2015
Grant's MULTICOMP pick and mix computer edit / delete
"Pick-and-mix to create your own custom computer on a low-cost FPGA board (BASIC, Z80, 6502, 6809, internal/external RAM, serial/keyboard+monitor, SD-card for CP/M or other storage)"
to 6502 6809 cpm electronics emulation fpga retrocomputing z80 ... on 23 September 2015
The Sproutie MK II HF Regen Receiver | Dave Richards AA7EE edit / delete
A very impressive shortwave receiver, using an HRO-style tuning control, a regenerative frontend and a load of multistage audio filters.
to electronics ham hf radio receiver regen shortwave ... on 23 September 2015
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tasty by Adam Sampson.