XXXL Seven Segment Display
by hudson, published
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4 digits * 7 segments * 4 LED/s segment == 112 LEDs. Â I bought a bag of cheap red ones; adafruit sells high intensity ones for $5.60 / 25 LEDs that are probably better.
To drive them I'm using a Teensy++, $27 from adafruit or $20 from the NYCR vending machine.
The acrylic plates were in the junk bin at Resistor, but new they are about $13 from Canal Plastics. Â The foam core was $2/sheet. Â If you do all the layers in acrylic that would add up a bit.
Add some misc hardware from around the shop... Â and that's it!
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The five layer stack assembles with M5x25 bolts and can be hung from the two slots.
Software coming soon.
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