Record and Play DUA

Version 0.1 PCB of Record and Play DUA

Background

"A workshop where participants will build small electro-mechanical solo drum machines from single DC motors and small circuit boards. The workshop will experiment with different kinds of sounding materials (metal pieces, stones, springs, paper, etc), where the machines will oscillate freely and develop their own individual sound quality. Once built the machines will be used to explore fundamental musical structures." - from Ralf Schreiber

As always, Ralf's workshops are fantastic examples combining technological simplicity, DIY electronics & soldering with a broad artistic and aesthetic creative potential for collaborative sound / kinetic art-making to explore together with workshop participants of all age groups and backgrounds.

During the TUAK residensi, we have picked up on of Ralf's workshop, the Record & Play, and experimented with different models for using it as a local workshop module in Indonesia. During the conversations with Ralf, we also found the new code, developed my ChrisMicro which allows to control 2 motors with a single ATTINY85 chip, using classes and object oriented code.

Paper PCB version, Thailand Jan 2024

new version using Wolfgang Spahn's paper PCB method

Paper PCBs is the fastest and the most flexible rapid prototyping system developed by Wolfgang Spahn since the early 2K. Paper PCBs are Printed Circuit Boards (PCB) based on paper print outs combined with copper strip boards, also called Veroboards. With these boards one can easily build and modifier real electronic circuits that could be used in any devices and applications.

New Dual Motor version

With the new code, we have now the option to add 2 motors, which can make especially the individuals sound sculpture more complex to take home. Also we removed the pull-up resistors to save some parts. Now only the reset pin is still available... it could be an option to flash the chip and disable reset and add another function. mbe a potentiometer for speed or something?

Dual version

BOM

• 1 x Attiny85 (DIP)
• 4 x 1kOhm Resistor (throughhole)
• 1 x 100µF (or more) Capacitor
• 3 x push button (6mm)
• 2 x LED
• 2 x BC817 Transistor (smd) - can be replaced also by weaker transistors, depending on mnotors used
• 2 x small motor (RF300 or clone)
• 2 x protection diode for motor (ex: 1N4841)
• 1 x Battery holder with on/off switch (2xAAA or 3x)

Code

See here: Multitasking by ChrisMicro

Hand-out

Version 0.1: File:TUAK_RecordPlayDua_handout.pdf

Various PCB designs

Ready for Shenzhen soon!!!

Making the pisibi

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Experiments with Arnont and Workshop in Chiang Mai

How to make sound?

Ralf's Spring Mod

Wenn du ohne Gravitation schlagen willst, kannst du die Motoren ja noch mit ner Bronzefeder (30x2x0,1mm) modden. 0,1mm dicke Bronzebleche solltest du finden können. Lüsterklemme auf Motorachse schrauben, Enden der Feder an Klemme & direkt ans Motorgehäuse löten...fertig.

Interessant wird es auch mit beidseitig elastischen Anschlägen (Bronzebleche)....oder den Schlegel mit Silikonschlauchstückchen/kleinen Federn bestücken. Da bekommst du Doppelschläge / mechanisches Delays...

Testing to build the circuit on proto-board, and doing the mechanical spring with cable ties. seems to work ok... the circuit is a bit complicated to build like this for beginners...

Workshop "Simple Kinetic Sound Sculpture" at Pazar Kaget, GOR, Bandung

Dusjagr was invited to visit GOR (Gelanggang Olah Rasa), in Bandung, and participate with a DIY electronics & art workshop during their weekend Bazaar. We took the opportunity to try out the new workshop concept adapted during the TUAK residensi, where we redesigned new PCBs for the workshop "record & play" by Ralf Schreiber.

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• https://www.instagram.com/gelanggangolahrasa/

Workshop "Simple Kinetic Sound Sculpture" at FKSM - Festival Komunitas Seni Media, Lombok, Indonesia

june 2023

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"ultra-mega terlambat posting, tampak suasana lokakarya @fksm.indonesia merangkai pengontrol motor dc untuk kebutuhan ini dan itu. lokakarya ini diadakan oleh kemendikbudristek dan @arcolabs.id di taman budaya mataram ntb, kala itu sekitar awal juni 2023. konversi desain menggunakan inkscape extension svg2shenzhen bikinan badgeek @manticore_ , sayangnya nggak sempat order ke shenzhen, akhirnya balik ke manual lagi XeroX dan aut666n tak lupa pcb bolong. kami dari @waftlab mengucapkan yaey"

• https://www.instagram.com/p/CyIzVB5SWBb/?igsh=dmh2ZHF0dDRoN3Qx