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LucidScience - LAZARUS-64 Electronics Projects, Plans, Schematics and Source Code. edit / delete
Discrete logic graphics card. This is very similar to the one I built for my Z80 machine -- but his does colour!
to electronics graphics logic retrocomputing ... on 02 May 2012
Open 7400 competition winners | Dangerous Prototypes edit / delete
Some fun entries -- including a couple of radios. No 4069UB-based power amplifiers, though!
to 4000 74 digital electronics logic ... on 02 May 2012
Pacific T.V. Online Tube Catalog edit / delete
A valve supplier -- but notable also for their collection of schematics, which includes things like VTVMs.
to electronics radio shopping test-equipment valve ... on 02 May 2012
OLIMEX LTD ARDUINO MAPLE PINGUINO ARM AVR MAXQ MSP430 PIC LOW COST DEVELOPMENT BOARDS edit / delete
Bulgarian company who make development boards for pretty much every microcontroller architecture out there. Pretty cheap, too. I'm particularly interested in their (planned) entry to the Raspberry Pi space, which is based on an LQFP version of the Allwinner A1x...
to arm avr electronics microcontroller pcb pic shopping ... on 30 April 2012
2,4V-StepUp-PowerLed-Treiber - LED Schaltungen, Treiber und µC - LedStyles.de edit / delete
7555-based circuit to run a string of high-power LEDs from a couple of AA cells. Very neat!
to 555 electronics led power psu ... on 18 April 2012
Electronics Projects - Vacuum-State Electronics edit / delete
A variety of neat valve-based projects -- amplifiers, scope-based TVs, etc.
to amplifier audio electronics retrotech tv valve video ... on 10 April 2012
Dieter's Homepage. edit / delete
Homebrew CPUs. Made from transistors. Extremely impressive.
to cpu electronics homebrew ... on 08 April 2012
www.on7yd.strobbe.eu edit / delete
Measurement techniques for 136kHz and 500kHz.
to antenna electronics lf radio ... on 08 April 2012
Built it. It works nicely (and first time too, even given some component subsitutions -- in particular, a BC550 works for the LFO transistor).
to audio effects electronics guitar tremelo ... on 01 April 2012
Relatively simple HF amplifiers based on the 813.
to amp electronics hf radio ... on 30 March 2012
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tasty by Adam Sampson.