The FNIRSI 2C53T is $90 on Amazon

I waited far too long to buy one of these portable oscilloscopes. The FNIRSI 2C53T is $90 on Amazon: https://amzn.to/49BxVJA (Amazon affiliate link) Here are the other videos I referenced: - Branchus Creations' overview of the 2C53T: https://www.youtube.com/watch?v=RyU4aKOZWcY - Matthias Wandel's review of the DPOS350P: https://www.youtube.com/watch?v=dcexJ4CTvOg - My previous video on the Pico GPS clock: https://www.youtube.com/watch?v=w_EJMtji93g Support me on Patreon: https://www.patreon.com/geerlingguy Sponsor me on GitHub: https://github.com/sponsors/geerlingguy Merch: https://www.redshirtjeff.com 2nd Channel: https://www.youtube.com/@GeerlingEngineering 3rd Channel: https://www.youtube.com/@Level2Jeff Contents: 00:00 - FNIRSI 2C53T 01:45 - Testing timing 03:05 - Probe setup 04:54 - Triggering on nanoseconds 07:22 - Cable length matters 08:45 - Quick summary of the oscope 09:31 - 3D printed clock LCD filter update 10:09 - Testing the signal generator (sine wave) 12:12 - Other waveforms 14:02 - When 1 Hz is actually 2 Hz