yardeen utrasontic pest repeller with flashlight

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duikkie
Posts: 2650
Joined: Fri Feb 07, 2014 3:28 pm

yardeen utrasontic pest repeller with flashlight

Postby duikkie » Fri Jul 28, 2017 12:19 pm

i have opened a pest/animal repeller like a yardeen to look at the schematics :shock:

the trouble is 1 ic with 16 pins , pin 12 is vdd and i think 5 is vss, pin 1 is output to led
pin3 is input,pin6 input pin7 input ? pin 8 input
pin 9 output ? pin 10 output to flash leds, pin 15 output to piezo spreaker
also in circuit a

lm358 to dectect motion and a ht7530 for 3 volt stable input.

so what can the 16 pin ic be ?? it must be something of a ne 556 to make the block sound, but i can't find

a 16 pin ic with pin 12 vdd and pin 5 vss

#-o #-o #-o #-o

duikkie
Posts: 2650
Joined: Fri Feb 07, 2014 3:28 pm

Re: yardeen utrasontic pest repeller with flashlight

Postby duikkie » Fri Jul 28, 2017 7:00 pm

maybe picture ?
Attachments
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