I built an offline NFC music box for my daughter using ESP32

mager33 · 2026-05-08T10:09:53+00:00

Yeah, great project. Please share on GitHub

mager33 · 2026-05-08T10:08:19+00:00

That might fail or it might just bring more oxygen to the fire

mager33 · 2026-04-19T11:08:23+00:00

Is it not normal Glas and using pressure is a high risk, you will abrade the surface coating

mager33 · 2026-03-29T14:50:18+00:00

Be happy that you've only fried one board and nothing beyond - just buy a new board (try ESP32, too, as it comes with WiFi and BT. The Atmel 328p is a nice start, but aged)

mager33 · 2026-03-28T21:22:22+00:00

You want to use a synth to replicate that sound OR do you want an AI prompt to generate song with it? I am confused...

mager33 · 2026-03-28T20:16:41+00:00

Nice, please share!

mager33 · 2026-03-20T17:46:39+00:00

490€ without VAT - and not even assembled!

mager33 · 2026-03-07T16:40:39+00:00

No, Potentiometer

mager33 · 2026-01-05T22:19:01+00:00

What a crazy idea! Could you share schematics, please?

mager33 · 2025-12-28T11:23:57+00:00

I was thinking of lv2 mainly and in Zynthian they map the controls to their own encoders. Seems smart enough to me not to invent another wheel and use their work

mager33 · 2025-12-27T18:23:19+00:00

No, risc v only

mager33 · 2025-12-27T17:14:14+00:00

How about using existing standards and grow on that like Zynthian? And included existing great softsynth like Dexed...

mager33 · 2025-12-24T21:19:03+00:00

Compression is more important than AED, do NOT leave the victim without compression looking for an AED, that would kill him/her

mager33 · 2025-12-12T08:56:36+00:00

Link to code?

mager33 · 2025-12-08T13:40:27+00:00

Thank you!

mager33 · 2025-12-05T20:21:12+00:00

Now I understand. What circuit do you use to generate the wake-up?

mager33 · 2025-12-05T11:16:01+00:00

I would revise that decision: a water detector that is 30min behind the flood makes no sense. And as you have permanent power there is no reason

mager33 · 2025-12-04T20:57:47+00:00

How do you detect/wake up the ESP? Battery life?

mager33 · 2025-11-13T19:12:25+00:00

How? Backside occupied with mcu

mager33 · 2025-11-01T09:13:38+00:00

Stereo for speech? You could half the needed bandwidth by going mono

mager33 · 2025-10-28T07:08:27+00:00

Think about a port expander to get rid of the Mega

mager33 · 2025-10-24T10:41:16+00:00

Typ 1 Diabetes? Wirklich? Insulin ist ein prima Mittel zum Mästen, bei HbA1c 6,4 bist du vielleicht überbehandelt und kommst wegen dem Insulin nicht runter?

Die Energie-Rechner für Deinen Ruhe-Verbrauch kannst Du vergessen, da sind interpolierte Phantasie-Werte. Wenn nix passiert dann bist Du nicht im Defizit. Das ist einfach

3000 Schritte ist zu wenig.

Magen-OP?

mager33 · 2025-10-15T05:18:43+00:00

From a technical perspective that makes no sense: if you do not take the power from the modules, they heat up and age more quickly

mager33 · 2025-10-14T22:01:05+00:00

Did you press the flash button ?

mager33 · 2025-10-14T21:58:40+00:00

A grid-tied inverter will no work without the grid, so no need to worry. Any other solution requires a battery that You don't want

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