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PY1AHD ALEX - Alexandre Grimberg - py1ahd edit / delete
A magnetic loop antenna with a highly entertaining tuning capacitor construction.
to antenna capacitor electronics loop radio ... on 21 June 2016
George Coulouris: Bits of History edit / delete
The author of em talks about it.
to ed editor em retrocomputing unix ... on 21 June 2016
Port of em to modern OS edit / delete
em being the Editor for Mortals, which added one-line editing to ed. The story I was told by Bob Eager (?) was that they installed this at Kent, but found fairly quickly that people tended to typo the name as "rm"...
to ed editor em retrocomputing software unix ... on 21 June 2016
"A Json document store on PostgreSQL". Neat.
to database json nosql postgresql ... on 21 June 2016
requesting Sinclair X-20, X-10 information - diyAudio edit / delete
Schematics for Sinclair's PWM amplifiers.
to amplifier audio electronics sinclair ... on 21 June 2016
shmups.system11.org • View topic - GBS 8200/8220 CFW Project edit / delete
Using a Raspberry Pi as a replacement controller for one of the common cheap video scaler boards. This lets you program the scaler chip to do additional Interesting Stuff(tm).
to arcade i2c raspberry-pi retrocomputing scaler video ... on 21 June 2016
Canned Hercules installation for people who want to play with APL. This would make a fun calculator application...
to apl emulation hercules ibm mvt retrocomputing ... on 21 June 2016
Things that use Ed25519 edit / delete
An interesting list. (Of course, the analogous "things that use RSA/AES" would be much longer...)
The Z80 Membership Card Computer edit / delete
Z80 version of the CDP1802 Membership Card. This is not a million miles away from the Pocket80 machine I built -- except they use separate EPROM and RAM, whereas mine just had battery-backed-up RAM.
to electronics retrocomputing z80 ... on 21 June 2016
"pdfsandwich generates "sandwich" OCR pdf files, i.e. pdf files which contain only images (no text) will be processed by optical character recognition (OCR) and the text will be added to each page invisibly "behind" the images." Based on tesseract and unpaper.
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tasty by Adam Sampson.