Hi!
I have ordered an Adafruit Trinket M0 and I would like to do datalogging at 100 Hz to a micro-SD card. I have noticed that the board does not include a crystal oscillator. Should I be concerned about time accuracy?
Regards,
Daniel
Adafruit Trinket M0 time accuracy
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Please be positive and constructive with your questions and comments.
- mikeysklar
- Posts: 13936
- Joined: Mon Aug 01, 2016 8:10 pm
Re: Adafruit Trinket M0 time accuracy
Daniel,
It depends on how you will be powering your board. I believe the Trinket M0 can measure pulses over USB to keep time sync a bit more accurate if you will be power it via USB. Do you know if that will be your setup?
If you really need precise timing and will not be using USB you might want to consider using a Feather controller board with a RTC / Crystal / SD card FeatherWing stacked on top.
https://learn.adafruit.com/adafruit-ada ... eatherwing
It depends on how you will be powering your board. I believe the Trinket M0 can measure pulses over USB to keep time sync a bit more accurate if you will be power it via USB. Do you know if that will be your setup?
If you really need precise timing and will not be using USB you might want to consider using a Feather controller board with a RTC / Crystal / SD card FeatherWing stacked on top.
https://learn.adafruit.com/adafruit-ada ... eatherwing
- DanInvents
- Posts: 2
- Joined: Wed Jun 09, 2021 3:23 am
Re: Adafruit Trinket M0 time accuracy
Hi!
Thank you for your reply. I have bought an Adafruit Trinket M0 to become familiar with the ATSAMD21 microcontroller. The flavor ATSAMD21E is perfect for my application since I will be designing a very compact board to place inside a rocket. The board will be battery powered and the microcontroller will collect data such as acceleration and altitude and write it to a microSD card.
I have decided to include a crystal for precise timing, just to be on the safe side.
Daniel
Thank you for your reply. I have bought an Adafruit Trinket M0 to become familiar with the ATSAMD21 microcontroller. The flavor ATSAMD21E is perfect for my application since I will be designing a very compact board to place inside a rocket. The board will be battery powered and the microcontroller will collect data such as acceleration and altitude and write it to a microSD card.
I have decided to include a crystal for precise timing, just to be on the safe side.
Daniel
Please be positive and constructive with your questions and comments.