HP-41 BatAn HP-41, USB chargeable battery replacement with old mobile phone- or NiMH-batteries. Contains completely 3D printable mechanics.
QaDchipsQuick and dirty chips. Another prototype solution.
6mmm/sA kinetic energy meter (sometimes referred to as "chrono") for pea, foam dart or airsoft toys.
(Although this is not a toy... (*1*)) *WHAMM!*
ParamikeA printable, parabolic microphone for kids and geeks.
((*1*) THIS is a toy =)
chipKIT-Max32-ShieldJust a bare shield for Digilent's chipKIT-Max32.
MetalEarsHeadphone amplifier #19, with the right, brutal punch towards the low end.
A real metal edition \m/
nMEAS(1/f)A modular kit of hard- and software for noise measurements.
We'll start off with the "1/f noise edition".
UniTHAmpIt was time for a new, universal lab-fun-amp.
Standard design - incredible diversity...
xPIClogA simple, but quite versatile and highly configurable 8 channel SD-card data logger.
Powered by a PIC18 and SourceBoost.
MicroPropUnitMicroPropUnit, just a tiny, standard component Parallax Propeller 1 board.
LTCsourcererLTCsourcerer, the Little Tiny Current source for automated uA measurements.
An analog black and white camera (PAL) capture and variable display helper.
ExcoLight ColorThe exceptionally complicated (and colored) light.
A four channel, bus capable LED buck regulator. Color version.
ExcoLight BasicThe exceptionally complicated light.
A bus capable LED buck regulator. Basic version.
IThreeCAnother updated variant of a galvanic isolation for an I2C bus.
Also known as a "Inter-Integrated-Isolated Circuit" (I3C ;-)
Promp3llerOh no! Yet another VS1011e based MP3 and WAV player... Yes, maybe. But this one has a Propeller ;) (and soon an Ethernet, a Zigbee, a remote control with display and, and, and...) Guess why these pages are called "never finished" 8)
FX2LPMiniJust a Cypress USB CY7C68013A MCU (aka "FX2LP") mini breakout board.
Reconstruction of the 2005 V1.0 design.
MiniFTDI(A bad week.)
Just a quickie. FTDI USB<->CMOS-RS232 converter with Propeller reset.
Nothing special, except for all the other stuff that happened...
MiniMessA tiny, serial, bus-compatible and cascadable measurement interface featuring a 10-bit A/D (autoranging) and an additional D/A converter. Created for operation with pocket calculators (HP-48/50) or old Sharp pocket computers.
H-BridgesSome H-bridges for DC, stepping and servo motors (and more).
Photo Frame HacksDFPs, digital photo frames, provide a cheap LCD/TFT source for your own hardware.
Batteries included ;-)
STM32MiniA minimal, ready to run ARM Cortex-M3 STM32 board.
JTAG Scanner (aka. UniPort)An update of an older circuit:
An universal port interface. Can be used as an universal, bidirectional (bus) interface. Modularized version, up to 48 pins.
Also useful for digging deeper into others people hardware ;-)
LPC0k9PROG (NXT2NXP)A Lego NXT based programming tool for LPC900 ICP.
LiPoPluLithium Polymere Plus. A step up regulator to power DLG/SAL-type model-planes from a single lipo cell. Futaba 2.4GHz don't like voltages below 3.6V...
I2C ServoA minimal, 6 channel, I2C controlled servo controller.
AUAA2Akki's Universal Analog Adaptor V2. Connect your PS2 analog controller to your PC. Full featured and even more...