Klangstrom (KLST) is a subtractive infrastructure design framework to facilitate generative, networked, embedded sound + music + composition. Klangstrom is comprised of software libraries, an embedded hardware platform, and a programming environment to allow seamless development of generative, networked, embedded sound + music + composition applications.

KLST_PANDA--front.jpg

KLST_PANDA--back.jpg

KLST_PANDA is the complete development board on which other designed might be based. it features a set of educated and optinionated peripherals.

Technical Specifications

KLST_PANDA is a development based on a STM32H723 Arm® Cortex®-M7 microcontroller (MCU), with 550MHz, 564KB RAM, 1024KB Flash, a Floating-Point Unit (FPU), and an additional 16MB of external memory.

KLST_PANDA--schematics--peripherals.png

  • ① :: mechanical key ( Cherry MX ) ( left )
  • ② :: rotary encoder ( push button, 24 pulses, no dents, 6mm D-shaft ) ( left 00 )
  • ③ :: MEMS microphone ( left )
  • ④ :: 4.3” TFT display ( 480×272px, 24Bit colors ) and capacitive touch surface
  • ⑤ :: on/off switch
  • ⑥ :: MEMS microphone ( right )
  • ⑦ :: rotary encoder ( push button, 24 pulses, no dents, 6mm D-shaft ) ( right 01 )
  • ⑧ :: mechanical key ( Cherry MX ) ( right )
  • ⑨ :: power LED ( white )
  • ⑩ :: stand-by LED ( white ) + charge LED ( yellow )
  • ⑪ :: GPIO port ( 34-pin IDC connector )
  • ⑫ :: SDCard reader
  • ⑬ :: mounting hole ( 4mm, M4 )
  • ⑭ :: line out
  • ⑮ :: line in
  • ⑯ :: headphones + mic
  • ⑰ :: microphone in
  • ⑱ :: USB-C device + charge connector
  • ⑲ :: programmer interface ( TC2070 )
  • ⑳ :: USB-C host connector
  • ㉑ :: MIDI out ( analog )
  • ㉒ :: MIDI in ( analog )
  • ㉓ :: DAC (0.0V–3.3V)
  • ㉔ :: ADC (0.0V–3.3V)
  • ㉕ :: IDC port ( 6-pin IDC connector ) ( right 01 )
  • ㉖ :: rechargeable battery
  • ㉗ :: reset button (RST)
  • ㉘ :: boot button (BOOT)
  • ㉙ :: programmer interface ( STD14 )
  • ㉚ :: programmer button (PRG)
  • ㉛ :: IDC port ( 6-pin IDC connector ) ( left 00 )

Open Source ( on Request )

the Klangstrom project was hosted on GitHub and has been archived on 2026-08-17. the project is currently undergoing a complete rewrite and is now hosted on a private git server. the project is still ( kind of ) open source, however, only on request. if you are interested in the most recent firmware or hardware designs please contact Prof. Dennis P Paul.