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!
RESET pin reusable?
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- dastels
- Posts: 15667
- Joined: Tue Oct 20, 2015 3:22 pm
Re: RESET pin reusable?
No. Reset is the MCU reset pin, and not mapped to a GPIO pin.
Dave
Dave
- dastels
- Posts: 15667
- Joined: Tue Oct 20, 2015 3:22 pm
Re: RESET pin reusable?
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
Dave
- Stolk
- Posts: 19
- Joined: Sat Oct 30, 2021 11:10 am
Re: RESET pin reusable?
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?
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?
- dastels
- Posts: 15667
- Joined: Tue Oct 20, 2015 3:22 pm
Re: RESET pin reusable?
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
Dave
- XRAD
- Posts: 754
- Joined: Sat Nov 19, 2016 3:28 pm
Re: RESET pin reusable?
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
https://learn.adafruit.com/adafruit-tri ... /downloads
Please be positive and constructive with your questions and comments.