gerd bartelt
All projects are non-commercial.
Sand mold generator
3D image to sandmold converter
License:
Creative Commons
Video Digitizer
PIC based video digitizer
License:
Creative Commons
Foot Pedal
3D printed foot pedal
for Brother sewing machine
License:
Creative Commons
Video time
Inserts time into a video signal
License:
SIL Open Font License
LCD Font
Dot Matrix TTF font
Feed-o-mat for cats
access by weight control
Cakes and more
Eaten long ago!
License:
GPL 3
PWA for iPhone und Android
A demo PWA. TypeScript with PixiJS. Virtual island based in OpenStreetMap data.
License:
GPL 3
Hydration System Gauge
Contactless, low current and lightweight
License:
GPL 3
Beat Bass Box
A rubber band bass
License:
GPL 3
A servo driver for 168 servos
This servo driver supports up to 168 servos and runs on an STM32 platform.
License:
Creative Commons
Kalimba sheet notes
Nursery rhymes for 8 key kalimbas
License:
Creative Commons
Bike
Steel frame bike. Fillet brazed
License:
Creative Commons
Energy Drink
Rezept Energy Drink
License:
GPL 3
tinnitus
A digital theremin based on the STM32 microcontroller
License:
GPL 3
Frequency counter
Micro frequency counter for the 40m ham radio band
License:
Creative Commons
Foot Pedal
Foot pedal for a TIG welding machine
License:
Creative Commons
Bicycle chainring
Generate your own bicycle chainring
Scooter
A scooter made of 25CrMo4 steel pipes (TIG fillet brazing)
License:
GPL 3
Welding meter/scope with voice output
An oscilloscope/meter for TIG welding. The welding current is read with voice output
License:
Creative Commons
Headbadge
Headbadge made of brass sheet
License:
Creative Commons
Retro bicycle computer
An analog bicycle computer with PIC microcontroller and 3 stepper motors.
License:
GPL 3
Stepper instrument
A stepper motor based analog instrument for large or special purpose.
License:
GPL 3
Go-Kart Control
Radio controlled display for go-kart tracks
License:
GPL 3
2D sensor
Camera based 2D sensor with a resolution of 13000 x 10000
License:
GPL 3
Miniatur Power Supply Unit with 0..24V and 0..3A
Very small power supply unit in the size of a cigarette box
License:
GPL 3
PIC NCO (Numeric Controlled Oscillator)
Receiver with a PIC NCO (Numeric Controlled Oscillator)
License:
GPL 3
PSU kit
Design of a low cost power supply kit without SMD components
License:
GPL 3
Moving Globe
A GPS with a miniature globe as a moving map
Electra Townie eBike E-Bike pink
Pink Electra Townie eBike
License:
GPL 2
phpBB3Auth
phpBB3 authentification plugin for Joomla!
License:
GPL 3
High Speed Actuator
Actuator for RC models with a very fast settling time
of only 1-2ms.
2D Laser Position Sensor
Measures the position on one plane with an accuracy of 0.001°
License:
GPL 3
Excel Formula
Displays the mathematical representation of an Excel formula
License:
Creative Commons
Drawings
Some drawings ...
... made by pencil or pixels.
License:
Creative Commons
Vampire Cam
Concept of an electronic / optical vampire cam.
License:
Creative Commons
Subsonic Receiver
Very fast subsonic receiver with only 1 periode latency.
License:
Creative Commons
Part Libraries for BlackBoard
Library with many parts for the OpenSource
BlackBoard project
License:
Creative Commons
Low Noise High Speed Photo Amplifier with a gain of 1.000.000 µV/µA
Amplifier for short light pulses. Supresses the DC level to detect weak light pulsed. Bandwidth: 1MHz.
Laser Tracker
Follow the light!
License:
Creative Commons
Cinderella-o-Mat
Sorts small stones, peas and lentils by size.
License:
GPL 3
Code generator for NTC calculations
Generates a table based C-code to calculate the temperature.
License:
GPL 3
GPS without satellites.
Calculates the global position only by sunset and sunrise. Uses only one LDR sensor.
License:
GPL 3
Sail Simulator
Java Applet to simulate a sailing boat.
License:
EPL V1.0
Fakturama
Java (Eclipse RCP) small business software for OSX, Windows and Linux.
Sebulli for iPhone and iPad
42 small games.
It's not available any more.
License:
GPL 3
Creative Commons
HP Gauge
Horsepower, impulse, acceleration and speed.
As LCD module or as gauge meter.
License:
Creative Commons
Testpattern Generator
Small modul that generates a video test pattern or a fixed-image.
License:
Creative Commons
Log-o-Mat
Logomat for Ham Radio ATV. Supports also animated logos.
License:
Creative Commons
Globe
40cm diameter. Continents and oceans are made with acrylic paint.
License:
Creative Commons
Gameboy Emulator / Development Board
Develop your own gameboy program.
License:
Creative Commons
Nipkow Disk
Displays an animated dancing stickman on a Nipkow Disk.
License:
Creative Commons
Gameboy programming tutorial
German tutorial - How to write your own Gameboy game.
License:
Creative Commons
30m QRSS Receiver
Very sensitive 30m receiver for QRSS.
License:
Creative Commons
Jukebox for 48 CDs
CDs are stored in a magazine, taken by a small robot arm and placed into a CD player.
License:
GPL 3
Creative Commons
Alphatalker
Communication device for handicapped children. 8x16 different sentences can be recorded and replayed.
License:
GPL 3
Gameboy Game *Boulder Crash*
Game with 20 levels.
License:
GPL 3
Interpreter for graphical State Machines
Resource saving interpreter for microcontroller implementations. State machines are programmed with a graphic tool. The compiled bytecode can be downloaded to the target microcontroller.
License:
Creative Commons
Barcode pen with online interface
Products in a printed catalog can be ordered by scanning a barcode and transmitting the order via telephone.
License:
Creative Commons
Dash Cam
Dash Cam with a SD-Ram ring buffer to store 30sec of video.
Background texture artist: sharandra
