Sei had two things: a bare wall in their apartment, and a tendency to (their words!) “waste money on useless electronics” — and thus Plotbot was born.
Powered by a Teensy 3.1 and a pair of Nema 17 stepper motors with SilentStepStick TMC2209 drivers, the system uses an extruded aluminum frame and arms in conjunction with a system of pulleys to drag a pen over a large sheet of paper, creating the desired drawing.
More information can be found on the project’s Hackaday page and GitHub repo, with a quick demonstration in the video below.
EverestX on SOLDIERX yearned for the simpler times of the beeper, and decided to bring them back at a personal scale with a custom Teensy-powered POCSAG pager transmitter.
In the days before everyone carried boring black slabs of always-on hyperconnectivity around in their pockets all day, being reachable away from your desk or home was actually fairly unusual — the domain of doctors, network admins, and … certain other high-income individuals. But with a growing desire among many to disconnect and simplify, the former status symbol of wearing a pager might today appeal as a minimalist messaging solution.
Perhaps best known for first-person shooters like Wolfenstein, Doom, and Quake, id Software’s Commander Keen, the side-scrolling adventure based on their Super Mario Brothers 3 clone for PC, was also an incredible shareware success.
Ryzee119 used the Omnispeak C clone for Windows and Linux as the basis for his Teensy emulator. Requiring just a 64Mbit of PSRAM and an ILI9341 TFT LCD Display, OmnispeakT4 supports save games via SD, Xbox 360 controller input via USB, and with an optional YM3812 OPL2 FM-synthesizer board, genuine OPL AdLin audio synthesis too!
Florian Loretan bought an old Bontempi keyboard, but it stopped working. Instead of consigning it to the scrap heap, he ended up on a journey to create a custom polyphonic Teensy-based synth, with the only remaining part of the original keyboard being the keys and matrix.
In addition to the Teensy 3.1, an Audio Adaptor Board is used, though not in the typical stacked orientation. Multiplexers handle the keyboard matrix and the custom potentiometer-based interface. More detail on the electronics can be found in a separate video, as can specifics on building the case, and a demo of everything together can be seen below. The source code, which is still a work in progress, can be found on GitHub.
Sometimes a project comes across our desks that just makes us laugh, in the best possible way.
This was the case with the Hamlet Organ, the creation of luni64’s daughter. If you just want to hear the most adorable sound ever to come from a Teensy, skip to 2:00 in the video below, but try to stick with us as we share a little more about this Teensy 3.6-powered MIDI-controlled barrel organ.
This amazing 3d-printed instrument uses MajicDesigns’ MIDI parser to read MIDI files from the Teensy’s SD card, combined with Adafruit’s PCA9685-based 16-channel PWM driver to control the 16 servos that control the organ’s 16 valves.
OK, now you can listen to the charming little tooting sounds in the video below:
Not content to relegate this 44-input beast to prior decades, SantiagoSaldana decided to give Steel Battalion mecha controller an Xbox 360-compatible USB XInput interface, with a little help from the USB capabilities of the Teensy 3.6.
By acting as a USB proxy of sorts, the interface even improves on the unidirectional capabilities of the original, allowing visual representation of haptic feedback, rather than just one-way input. Since it presents as a normal HID device, it can even be used with the Oculus Quest (and 2) for a truly immersive mecha piloting experience.
Frustration with newer Linux distros, especially the transition from X11 to Wayland, was the main motivation. While it’s open source, allowing you to theoretically tweak it to work however you like, the reality of technology marches on with large rapidly changing code is sometimes leaving that one special feature that you loved in its wake. Button mapping and drag lock – completely gone. By intercepting communication, the many features of a special complex mouse can be reassigned in any way.
The Mouse Tailor, as the resulting box is called, simply takes the mouse or other input device’s output via the USB host port, transforms it as required, and then passes the result to the connected computer as a Human Interface Devices (HID) device, appearing as if it were just a normal mouse. Source code and a detailed recounting of the journey to get there can be found on the project’s web page.
The MRSC Signature features a custom PCB and aluminum enclosure, with various available RA8875 and HX8357D-based touchscreens. A USB keyboard can be connected as an input device, in addition to the typical paddle preferred by CW enthusiasts. A wealth of options and settings are available, which you can find in extensive detail on the project’s web page, along with more pictures and videos of the device in use.
Darkwave artists Boy Harsher have developed a cult-like following over the past decade. To create a drone synth to tie in with their directorial debut film, The Runner, they reached out to Moffenzeef Modular’s Ross Fish, creator of the Teensy-powered STARGAZER.