An experimental sound device for listening to light
Lite2Sound BC lets you explore the light in an environment through sound. It does this by converting the small current from a photo diode sensor into a voltage suitable for driving an amplifier. Any light that moves at an audible rate can be picked up by the circuit.
It comes packaged in a little 'minty' tin that has a front window and hole so it can be used as the project's enclosure.
The kit contains
- x3 10µF Electrolytic Cap, Nichicon UWX1C100MCL2GB
- x2 220µF Electrolytic Cap, Multicomp MCVVT016M221EA6L
- x2 220pF C0G Ceramic Cap, Multicomp MC1206N221J500CT
- x3 100nF Ceramic Cap, Kemet C1206S104K5RACTU
- x3 10Ω resistor, Walsin WR12X10R0FTL
- x3 220Ω resistor, Walsin WR12X2200FTL
- x3 20KΩ resistor, Walsin WR12X2002FTL
- x3 2MΩ resistor, Walsin WR12W2004FTL
- x1 Schottky Diode, Diodes Inc 1N5819HW-7-F
- x1 Photodiode, On Semi QSD2030F
- x1 Low noise operational amplifier, Diodes Inc TL072SG-13
- x1 Power amplifier, Texas Instruments LM386MX-1/NOPB
- x1 3.5mm Stereo Jack Socket, TruConnect PJ-301DM
- x1 50kΩ Finger Adjust Pot, Suntan TSR3386F-EY5-503-TR
- x2 Switch, C&K JS202011SCQN
- x1 Battery contact positive, MPD BSPCF
- x1 Battery contact negative, MPD BSPCM
- x3 12.7mm self-adhesive foot, RVFM PD.2125
- x1 PCB
- x1 Metal enclosure pre-drilled
- x1 Light blocking sticker for tin
Cordwood Puzzle Three is an open source design, as is most of our work. You can find the design files for the hardware and packaging at our GitHub repository. You can edit the design files using our own PCB design open source software, PCBmodE.
The PCBs were lovingly made by Eurocircuits.
Community contributions for this project are on our community site.
Challenge yourself by assembling the kit without further instruction. Before you do that, however, note the following:
- when connecting to a board, make sure that the I/Os can tolerate the voltage levels that are applied to the Cordwood;
- make sure that you do not short power and ground; and
- don't exceed 20mA per LED.
Even though the original comprehensive are forever lost, we've created an alternative guide of varying difficulty levels. Use any information from the infographic, or don't. Up to you! Finally, the assembly instructions for the first Cordwood Puzzle could be helpful ;)