Light transmitter/receiver by 4_3_2_1_
high temperature = 1, low temperature = 0...... woah, that's unexpected popularity... thanks guys
transmitter
ggmate
realistic
digital
antenna
light
phot
recevier
heat
Comments
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PortalPlayer 7th May 2018
It could certainly be improved, as only 4 pulses are necessary to distinguish between the numbers.