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SLIMEZISTOR
The SlimeZistor is a relaxation oscillator which uses an LM358P op amp to charge and discharge a capacitor through some sample which is connected to the two probe wires. The schematic is as follows, and should be copied and pasted on the bottom of each unit:
These are the kit parts:
Here are links to buy the parts from amazon(enough for about 50 units for about 40 dollars):
- $15 bojack capacitor kit
- $6.32 10k resistors 100 units
- $10 50 pin 0.1 inch pitch right angle header strips
- $7 50 units LM358P op amps
$90 Digikey cart link with part set for 100 units
The circuit board is a 1x2 inch rectangle cut out of thin cardboard like a cereal box:
Remove pins 1,2, and 3 of the 8 pin IC:
Assemble as follows, with 0.1 uF capacitor to the far left, then 1 uF and then the two to the far right which are horizontal are the 10 uF capacitors:
This is a 5x blowup of the board, with parts labeled. Replicate this as a tool for replication to carry with you as you replicate the set:
An array can also be cut out using a laser cutter with the following .svg file(cut out a 4 inch square of this, with the blue layer as raster and black layer as cut):
Here is an .svg of just one board:
This is what the bottom looks like after full assembly:
The enclosure is made from 4 squares each 4x4 inches in size cut from corrugated cardboard using the tools of Geometron:
Stack and glue with Elmer's glue or wheat paste:
Second layer:
Add the circuit board to the box before adding the lid:
Full assembly with lid and rubber bands:
Fully assembled system with speaker connected to audio output and a solar panel connected to the USB power:
