i've backspaced over trying to be nice but i don't think you a) could've made th... | Hacker News

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		jaystraw on Sept 7, 2023 \| parent \| context \| favorite \| on: AOL pretends to be the internet i've backspaced over trying to be nice but i don't think you a) could've made the dtmf tones, b) matched the impedance, c) modulated the serial signal even if you made a connection please prove me wrong

Gracana on Sept 7, 2023 [–]

They’re describing pulse dialing, not tone dialing. Totally doable using a toggleable serial port pin and some basic electronics.

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