Does the ATtinyx5 series allow for capacitive touch without a resistor?

Hackaday is having a business card contest https://hackaday.com/2024/05/07/the-2024-business-card-challenge-starts-now/and I decided to throw something together to enter. I doubt it will win, as mine is just a simple LED/battery holder. But it's been something that I've been thinking about for a while, so seems like a good excuse. Maybe it'll get one of the runner-up prizes. All that being said, I'm fairly happy with the front, but the back could probably better. Any suggestions to help with its aesthetics and/or usefulness (whether front or back)?

Al Williams

Hackaday

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Solution:

- doesn't look like supporting capacitive touch as a peripheral. So external components will be required. Also take a look at this MCU coming with touch sense peripheral MSP430FR2512 ( design manual https://www.ti.com/lit/an/slaa842b/slaa842b.pdf) - How about this? 1W speaker. 13mm^2 dimension for your card https://www.digikey.com/en/products/detail/cui-devices/CDS-13138-SMT-TR/5355531...

DigiKey Electronics

CDS-13138-SMT-TR | DigiKey Electronics

Order today, ships today. CDS-13138-SMT-TR – 8 Ohms General Purpose Speaker 700 mW 840 Hz ~ 1.26 kHz Top Square from CUI Devices. Pricing and Availability on millions of electronic components from Digi-Key Electronics.

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