Like all IC’s high high Independence inputs, all it requires are a few stray / capacitive electrons to trigger off these pins and have interesting effects anyway…
but the 4046BE is a Phase Lock Loop (PLL) and it has even more interesting behavior because of what’s it trying to do, if you happen to have one of these ICS and you’re bored try it lol
simply connect it up to the breadboard as I have in the photo, connect only + gnd, 5 & 8 pin 3, I thought was a sink, is a source, connect pin 4 + side to the LED Anode (long leg) and short
leg to Gnd.
Right, now bring your finger to the chip, it starts to oscillate, the closer you put your finger to the chip, the faster it oscillates, pull it away and it will gradually decrease but it was detecting
my body a good 3 inches away from the IC 0.0001 herts or something, it seems like this anomaly could be used as a human sensor (maybe an antenna metal plate of some kind).
This is “where i was up to” when i noticed the weird behavior. (view attached image)