It's a tutorial, Rue, so I focus on one thing at a time ;-) But Charlieplexing is on the list for a future one, promise!

New video in the works... Any guesses what it's about? :)

I'm trying to make a tutorial for beginners, so either it works out of the box, or it won't go into the tutorial because it's too finicky... I'll test with the new batch.

I have ordered a second batch to see if maybe I got some lemons...

No capacitor, it's a resistive ladder

These switches are just bridging resistors in a binary-weighed resistor ladder. Current is around 3mA. Unfortunately the parasitic resistance makes them unusable, up to 5 ohms would have worked, but this spoils the accuracy.

Yeah it sounded a bit high to me, too, but I compared with other pushbuttons, same setup (alligator clips and my GW Instek GDM-8245), and they read much lower in the regime you mentioned. Bad batch?

This is outside the breadboard I'm afraid...

What's the typical on resistance of a breadboard-compatible pushbutton? Mine are around 30 ohms which I find a bit excessive.

It's been a bit more quiet than I'd like because I am quite busy at work these days. But we're working on 2 new videos :) Thanks for checking in, Rue!

Any tips for photographing LCDs?

What happens when you combine a PIC microcontroller with the idea of retro Christmas lights? Find out in my new tutorial, happy holidays! youtu.be/wiOAHj1wmq8

OK, hint: this has a 30cm diameter :)

Anybody know what this is?

Now what could you build with this... :) Tutorial coming soon!

Sneak peek for the upcoming video... Any guesses?

Yeah it's really more of a general purpose idea :)

Thanks so much for sharing!

This will be a one-off project, so no PCB, just hand-wiring on a perfboard. But I want to make it easy to understand for beginners (on my channel I have covered all components, with the exception of the LCD, which will come in the new year).

A bit more parts on the next project... Any ideas how to make the schematic more readable?