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Poppy Playtime Chapter 5: Emoji keypad code in conditioning

There's a locked door in Conditioning with a strange emoji keypad in Poppy Playtime: Chapter 5, here's how to get the code to unlock it.
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Keypad Lock Code with Dual Programming

The project shows the design of dual programmable keypad code lock that is based on a PIC16F452 microcontroller. The keypad has a cable length of up to 100m and up to two keypads can be connected to ...