#and used a Teensy 4.1

[all-hail-the-conn-8d]

It's been forever since I've posted about synth stuff on here, but I'm getting close to finishing a new design for a modern Simmons memory cassette!

Just gotta redesign the component silkscreens to look more Simmons-y, currently everything except the big header and the STM32 are still the EasyEDA default designs.

[taperwolf]

So I've decided to try something using my LittleBits Arduino bit and my LittleBits Adapter Eurorack module: the Dumbest Possible Quantizer.

(To overexplain, a quantizer takes a continuously varying voltage as an input and outputs a voltage that follows it, but in defined steps. The usual use case in Eurorack is mapping a control voltage onto the levels needed to produce, in the volt per octave tuning, a musical scale; you run random voltage levels through and get more musical results.)

Quantizer modules typically support different scales, modes, and keys, and sometimes even temperaments, but for the Dumbest Possible Quantizer, I'm limiting things to the bare 12-tone chromatic scale. And as suits the title, I'm doing this in the simplest possible way: I'm taking the 10-bit ADC value of the input — a number between 0 and 1023, covering from 0 to 5 volts — and mapping that onto the 60 midi notes that cover those five octaves. I'm then immediately turning around and mapping those 60 notes onto the 8-bit (0-255) value that the PWM "analog" output can take. This is nobody's idea of the proper way to do this, but since I actually had decent success using the second half as a USB MIDI to CV converter on this board already, it has a reasonable chance of approaching the desired functionality.

Long term, of course, I intend to build or otherwise acquire a quantizer module with real functionality, probably using a proper DAC; I'm following the in-development Teensy 4.1-based Ornament and Crime upgrade with great interest. But I really want to see how much I can do with very low effort!

[tom2tec]

ML_SynthTools ~ Arduino Synthesizer Library

This library is made to be used for synthesizer projects. It contains modules to create sound, to drive an audio codec and create some audio effects. This library supports different platforms: ESP32, ESP32S2, ESP32S3 ESP8266 Seeedstudio XIAO (samd21 – cortex-m0plus) Teensy 4.1 (imxrt1062) Daisy Seed (cortex-m7) Raspberry Pi Pico (rp2040) STM32F407…

[highpowerrocketryspace]

Here are the capabilities so far of our Inhouse design of the Rocket Flight Computer. This flight computer is designed for rockets 38mm in diameter or greater and will fit inside a 38mm tube coupler. Dimensions are 4.0in x 1.25in x 0.5in, not including the antenna more or less Flight-ready for supersonic flights to over 24K feet and Mach 2.0. For large or high-power projects, a commercially available backup computer is strongly recommended. --------FEATURES---------- Full-featured dual deploy/multi-stage/air start rocket flight computer capable of 100,000ft or more Tilt-sensing lockout for ignition of second stages and/or air starts Live telemetry over fil NRF24L01+PA+LNA compatibles with Arduino – 2 Mbit/s – 1100 metres And Bluetooth BLE 6 high-current pyro outputs with continuity checks Advanced MEMS sensor package: GNSS, accelerometers, gyroscope, magnetometer, barometer, and LoRa radio High Data-Capture rate: approximately 50,000 samples per second recorded to SD card --1000Hz 3-axis digital 24G and 100G accelerometer data logging --1000Hz 3-axis digital 2000dps gyroscope data logging --1000Hz of flight events & continuity data logging --1000Hz of sensor-fuzed speed & altitude --100Hz of pitch, yaw, roll rotation --40Hz of of magnetic data logging and magnetic roll --30Hz-100Hz of digital barometric data logging (Altitude, pressure, temperature) --30Hz of main battery voltage (1400Hz during pyro events) --5Hz-25Hz of GNSS data logging (chip-dependent data rates & constellations) --Separate data file for each flight up to 100 flights Simple, easy-to-use configuration interface through the SD card --User Selectable Flight Mode: Single-Stage, Two-Stage, Air start, or Booster --Configurable Apogee delay --Optional Audible Battery Voltage report at startup --Optional Magnetic Switch Startup & Shut-down --Pre-flight audible reporting options: Perfect flight or Marsa --User selectable telemetry frequency & power settings --8 configurable servo outputs (8 powered) +4 Multy prepose --User-selectable inflight brownout recovery Mach immune, sensor-fusion-based apogee event Barometric-based main deploy event Audible pre-flight continuity report Audible Post-flight max altitude & speed report Mount in any orientation, automatic orientation detection with built-in self-calibration mode Bench-test mode activated w/ tactile button, user configurable status messages over USB Serial A report in SI or Metric units Compatible with Teensy 4.1 --Connect any sensor to any available I2C or SPI bus --Create your own custom setup with configurable pins for continuity, firing, and servos --Connect UBLOX GPS unit to any available HW Serial port From OpenAI: Incorrect API key provided.

[rytron]

Picking up a Teensy 4.1 today so I can run the DirtyWave M8 Headless on my Steam Deck, so I setup what I hope will be a good control layout (rear paddles handling velocity/octave, left trackpad and stick both as a radial note inputs). Plz don't mind the screen floofs from Astro and Nova. Can imagine finding reason to setup the bumpers/triggers later once I'm using it.

This post/thread was very helpful in getting the M8 Headless browser version up and running, though I had to leave it on beta branch and not the stable one as their update said to use.

[kirch]

DIY Dirtywave M8 headless using a Teensy 4.1 microcomputer https://www.youtube.com/watch?v=gf1Blf8M7XE

[real-circle]

Plan for mini project

larger project

i want to make something to attach to my bike, to track some aspect of a journey.

maybe:

using an accelerometer or gps tracker to track a journey

sound? tracking noise level

speed?

bumpiness?

maybe i could track a couple of these things, and combine with gps data (using my phone?) to present a graph of a map... sort of like google maps traffic plotting.

choosing micro controller:

Arduino Leonardo

Raspberry Pi Pico

Adafruit CLUE

Adafruit Metro M4

Adafruit PyGamer

Teensy 4.1

Adafruit Feather RP2040

Adafruit Circuit Playground Express

BBC Micro:bit

Matrix Portal M4

Qualitative route mapping!

Tracking noise level and bumpiness (elevation?) over a route (gps tracking), afterwards plotting this route visually (similar to google maps traffic level colour coordinated maps)

During a journey i will need to track and store sound level and movement of some kind.. and possibly gps location. or record location on phone or smthn in a way that i could combine it with the other things.

needs:

gps sensor

bumpiness sensor

noise sensor

mapping application? (probably something that i can draw on top of?? idk

[highpowerrocketryspace]

Here are the capabilities so far of our Inhouse design of the Rocket Flight Computer. This flight computer is designed for rockets 38mm in diameter or greater and will fit inside a 38mm tube coupler. Dimensions are 4.0in x 1.25in x 0.5in, not including the antenna more or less Flight-ready for supersonic flights to over 24K feet and Mach 2.0.  For large or high-power projects, a commercially available backup computer is strongly recommended.  --------FEATURES---------- Full-featured dual deploy/multi-stage/air start rocket flight computer capable of 100,000ft or more Tilt-sensing lockout for ignition of second stages and/or air starts Live telemetry over fil NRF24L01+PA+LNA compatibles with Arduino – 2 Mbit/s – 1100 metres And Bluetooth BLE 6 high-current pyro outputs with continuity checks Advanced MEMS sensor package: GNSS, accelerometers, gyroscope, magnetometer, barometer, and LoRa radio High Data-Capture rate: approximately 50,000 samples per second recorded to SD card --1000Hz 3-axis digital 24G and 100G accelerometer data logging --1000Hz 3-axis digital 2000dps gyroscope data logging --1000Hz of flight events & continuity data logging --1000Hz of sensor-fuzed speed & altitude --100Hz of pitch, yaw, roll rotation --40Hz of of magnetic data logging and magnetic roll --30Hz-100Hz of digital barometric data logging (Altitude, pressure, temperature) --30Hz of main battery voltage (1400Hz during pyro events) --5Hz-25Hz of GNSS data logging (chip-dependent data rates & constellations) --Separate data file for each flight up to 100 flights Simple, easy-to-use configuration interface through the SD card --User Selectable Flight Mode: Single-Stage, Two-Stage, Air start, or Booster --Configurable Apogee delay --Optional Audible Battery Voltage report at startup --Optional Magnetic Switch Startup & Shut-down --Pre-flight audible reporting options: Perfect flight or Marsa --User selectable telemetry frequency & power settings --8 configurable servo outputs (8 powered) +4 Multy prepose --User-selectable inflight brownout recovery Mach immune, sensor-fusion-based apogee event Barometric-based main deploy event Audible pre-flight continuity report Audible Post-flight max altitude & speed report Mount in any orientation, automatic orientation detection with built-in self-calibration mode Bench-test mode activated w/ tactile button, user configurable status messages over USB Serial A report in SI or Metric units Compatible with Teensy 4.1 --Connect any sensor to any available I2C or SPI bus --Create your own custom setup with configurable pins for continuity, firing, and servos --Connect UBLOX GPS unit to any available HW Serial port