happy circuit is producing happy waves
erin is happy, because it finally worked 😅
you might wonder: why is Erin using a CMOS inverter for a saw VCO? the answer is abusing the nonlinear regions of the inverter to build a ramp generator and a Schmitt trigger that resets the ramp each cycle
@er1n eeeeeh...? i mean. an inverter literally is just a high gain op-amp, pretty much?
( like,... actually. especially once you're in weird deep-sub-threshold domains, but also everywhere else. CMOS is kind of a fuck, but that implementation idea also is pretty... motivated? i think? idk.
i'd be more informed about this but uhhhhh those classes where while i was abruptly crashing out of grad school. 🤷 )
@er1n I actually really miss the days (not that I was aware of them when they were here) where most things were 90% built out of 4000 or 7400 chips. I *love* the idea of a common set of parts being used in different devices - that you could raid a VCR to find spare parts for an alarm clock; that all appliances are basically Lego projects full of interchangeable and recombinable parts, and that no bit of silicon is single-use, permanently committed to one device which may break or go obsolete.
@er1n So the thing you made is waving to the camera?