RESET pin reusable?

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Stolk
 
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RESET pin reusable?

Post by Stolk »

I need 6 outputs from my Trinket M0, but it only has 5.

This may be a dumb question, but:
Is it possible to re-use the RESET pin as a digital output?

Thanks!

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dastels
 
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Re: RESET pin reusable?

Post by dastels »

No. Reset is the MCU reset pin, and not mapped to a GPIO pin.

Dave

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dastels
 
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Re: RESET pin reusable?

Post by dastels »

You could move to the SAMD21 based QTPy https://www.adafruit.com/product/4600 which is in many ways a better TrinketM0, with more GPIO pins on a slightly smaller board. Plus USB-C and a STEMMA-QT I2C connector. Plus you can expand the flash by adding a SPI flash chip.

Dave

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Stolk
 
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Re: RESET pin reusable?

Post by Stolk »

Thanks for the suggestion!

This is for mounting inside a PC, using a 4-pin internal usb connector on the motherboard, which is far easier to terminate with a micro-usb plug than a usb-c plug. So I would like to stay at micro-usb. I don't think 4(5) pin header to usbc cables even exist?

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dastels
 
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Re: RESET pin reusable?

Post by dastels »

A bit bigger board size but the ItsyBitsy M0/M4 and Feather M0/M4 all have more than enough I/O (and microUSB connectors).

Dave

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XRAD
 
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Re: RESET pin reusable?

Post by XRAD »

you can carefully remove the resistor for pin 13(the led pin), solder I/O wire to correct side of resistor pad, and voila, you have a digital 6th pin....

https://learn.adafruit.com/adafruit-tri ... /downloads

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