HP-41 Bat
An HP-41, USB chargeable battery replacement with old mobile phone- or NiMH-batteries. Contains completely 3D printable mechanics.
QaDchips
Quick and dirty chips. Another prototype solution.
6mmm/s
A kinetic energy meter (sometimes referred to as "chrono") for pea, foam dart or airsoft toys.(Although this is not a toy... (*1*)) *WHAMM!*
Paramike
A printable, parabolic microphone for kids and geeks.((*1*) THIS is a toy =)
chipKIT-Max32-Shield
Just a bare shield for Digilent's chipKIT-Max32.
MetalEars
Headphone 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".
UniTHAmp
It was time for a new, universal lab-fun-amp.Standard design - incredible diversity...
xPIClog
A simple, but quite versatile and highly configurable 8 channel SD-card data logger.Powered by a PIC18 and SourceBoost.
MicroPropUnit
MicroPropUnit, just a tiny, standard component Parallax Propeller 1 board.
LTCsourcerer
LTCsourcerer, the Little Tiny Current source for automated uA measurements.
GrabschKamView
GrabschKamView(Debugger);An analog black and white camera (PAL) capture and variable display helper.
ExcoLight Color
The exceptionally complicated (and colored) light.A four channel, bus capable LED buck regulator. Color version.
ExcoLight Basic
The exceptionally complicated light.A bus capable LED buck regulator. Basic version.
IThreeC
Another updated variant of a galvanic isolation for an I2C bus.Also known as a "Inter-Integrated-Isolated Circuit" (I3C ;-)
Promp3ller
Oh 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)
FX2LPMini
Just 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...
MiniMess
A 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-Bridges
Some H-bridges for DC, stepping and servo motors (and more).
Photo Frame Hacks
DFPs, digital photo frames, provide a cheap LCD/TFT source for your own hardware.Batteries included ;-)
STM32Mini
A 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.pbLua featured!
LiPoPlu
Lithium 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 Servo
A minimal, 6 channel, I2C controlled servo controller.
AUAA2
Akki's Universal Analog Adaptor V2. Connect your PS2 analog controller to your PC. Full featured and even more...
