Below is an (incomplete) overview of what keeps me busy. For some projects I take the trouble to make a project page with more detailed descriptions and a YouTube video.
Some time ago I thought along with a fischertechnik club member about a model in which a figure-eight motion had to be described. The challenge was to have an element, such as a cart or ball, describe a path according to a 'bow shape' or 'lemniscate' curve. This produces a movement that intersects itself at the center.
In researching the mysterious lemniscate, I came across some interesting facts. Then I tried out some methods and built a motor controller for the occasion to be able to regulate the speed of the motor.
An uncle, who works as a volunteer at a home for people with dementia, asked me whether I could convert an old rotary dial phone into an MP3 player with nostalgic songs and radio fragments. Recognizing the old faithful PTT telephone with dial, and listening to old remembered songs, often turns out to be a feast of recognition.
After some research into the different Bluetooth modules and their capabilities, I was able to focus on my next goal: Using Bluetooth for the remote control with the joystick shield that has been expanded with an LCD display.
The communication from the joystick shield is compatible with the ArduinoBlue software library used in the model to be controlled. This makes control with the joystick shield interchangeable with the ArduinoBlue app without having to change the Sketch in the cart.
In previous projects universal HF modules where used with the joystick shield to create a remote control unit. With the nRF module a half-duplex connection is possible, but the simple 433 MHz module only allowed data traffic in one direction.
On this site I came across the ArduinoBlue app as a remote control for the fischertechnik car. A logical next step is to use a Bluetooth module on the joystick for the remote control. It turned out to be a lot of information for one project and video, which is why I've cut the subject in two. First, let's take a look at how to establish a full-duplex connection between two Bluetooth modules.
An experiment with an alternative transmitter (and receiver) for the Joystick Shield and the Buggy from a previous tinkering. In various webshops I came across a very cheap set of prints for 315 or 433 MHz for this. So cheap that it made me curious.
The overall quality was indeed not very good. There even seemed to be parts missing and I figured they wouldn't work. So no high expectations. But when I experimented with it, it turned out not to be a bad buy and I even made a funny discovery!
Recently I picked up a 'Funduino Joystick Shield V1.A' for a few bucks. This is an Arduino Uno compatible shield that allows you to create a game console or robotic controller. This nifty little shield features an 2-axis analogue joystick with switch, four large and two additional small switches (buttons) on the pcb.
Add an Arduino and some means of (wireless) communication to get a fully functional remote control unit and add game control or manual robot control type functionality to a project.
A video about my experiments with a cheap wireless PS2 controller for controlling various functions of a self-built model car equipped with an Arduino.
This article about the PS2 controller was also published (in German language) in issue 4 of 2020 of the ft:pedia; a very interesting online magazine about technology in combination with the construction material fischertechnik.
In this video I'll show you my experiments with controlling the pneumatics of a mini pinball machine constructed with fischertechnik.
Experiments with the TSOP4838 infrared receiver for controlling fischertechnik-built vehicles.
Many different motors can be used with the fischertechnik construction material. In addition to the classic mini, XS, S, M and XM motor, encoder and stepper motors are also available.
But additional motors are of course also easily and cheaply available nowadays. With a little effort and a special 3D-printed holder, they turn out to be excellent to use alongside fischertechnik's 'own' motors.
In this video my experiments to make a music playing phone from an old PTT T65 dial phone.
Video about my attempts to control a Nefit room thermostat with an Arduino.