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Trinket's got a big sister in town - the Pro Trinket 3V! Pro Trinket
combines everything you love about Trinket with the familiarity of the
core Arduino chip, the ATmega328. It's like an Arduino Pro Mini with
more pins and USB tossed in.

Trinket's a year old now, and while its been great to see tons of tiny
projects, sometimes you just need more pins, more FLASH, and more RAM.
That's why we designed Pro Trinket, with 18 GPIO, 2 extra analog
inputs, 28K of flash, and 2K of RAM.

Like the Trinket, it has onboard USB bootloading support - we opted
for a MicroUSB jack this time. We also added Optiboot support, so you
can either program your Pro Trinket over USB or with a FTDI cable just
like the Pro Mini and friends.

The Pro Trinket PCB measures only 1.5" x 0.7" x 0.2" (without headers)
but packs the same capability as an Arduino UNO. So it's great once
you've finished up a prototype on an official Arduino UNO and want to
make the project smaller.

The Pro Trinket 3V uses the Atmega328P chip, which is the same core
chip in the Arduino UNO/Duemilanove/Mini/etc. However, it uses 3V
logic and 12MHz clock which means it's good when you want a
lower-power and lower-voltage setup. Pro Trinket is programmable using
the Arduino IDE as you already set up, and 95% of Arduino projects
will work out of the box!

Here's some things you may have to consider when adapting Arduino

* Pins #2 and #7 are not available (they are exclusively for USB)
* The Pro Trinket 3V runs at 12MHz, this doesn't affect most
projects. Only the most timing-specific libraries may be affected,
check the documentation! The NeoPixel Library works fine at 12MHz.
* The onboard power supply is a 3.3V regulator and it can provide
150mA output
* You cannot plug shields directly into the Pro Trinket
* There is no Serial-to-USB chip onboard. This is to keep the Pro
Trinket small and inexpensive, you can use any FTDI cable to connect
to the FTDI port for a Serial connection. The USB connection is for
uploading new code only.
* The bootloader on the Pro Trinket use 4KB of FLASH so the maximum
sketch size is 28,672 bytes. The bootloader does not affect RAM usage.

Here's some handy specifications:

* ATmega328P onboad chip in QFN package running at 3.3V logic
* 12MHz clock rate, 28K FLASH available
* USB bootloader with a nice LED indicator looks just like a
USBtinyISP so you can program it with AVRdude and/or the Arduino IDE
(with a few simple config modifications).
* Also has headers for an FTDI port for reprogramming
* Micro-USB jack for power and/or USB uploading, you can put it in a
box or tape it up and use any USB cable for when you want to
* On-board 3.3V power regulator with 150mA output capability and
ultra-low dropout. Up to 16V input, reverse-polarity protection,
thermal and current-limit protection.
* Power with either USB or external output (such as a battery) -
it'll automatically switch over
* On-board green power LED and red pin #13 LED
* Reset button for entering the bootloader or restarting the
* Works with 99% of existing Arduino sketches (anything that doesn't
use more than 28K, and doesn't require pins #2 and #7)

* Mounting holes!


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General information

Manufacturer Adafruit Industries
Product type Elektronikmodul
Item number5998545
Manufacturer no.ada-2010

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Warranty & right to return

Warranty 24 month Bring-in

Limited right of return

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Mail delivery

 Expected delivery time: approx. 7–9 days
Currently > 5 piece(s) in stock at the supplier


All locations

 Expected delivery time: approx. 7–9 days
Currently > 5 piece(s) in stock at the supplier

If ordered immediately.
Information subject to change.

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Adafruit Industries Adafruit Pro Trinket 3V 12MHz Adafruit Industries Adafruit Pro Trinket 3V 12MHz