Reset button for entering the bootloader or restarting the program.On-board green power LED and red pin #13 LED.Power with either USB or external output (such as a battery) - it'll automatically switch over.Up to 16V input, reverse-polarity protection, thermal and current-limit protection. On-board 5V power regulator with 150mA output capability and ultra-low dropout.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 reprogram.Has headers for an FTDI port for reprogramming.USB bootloader so you can program it with AVRdude and/or the Arduino IDE (with a few simple config modifications).

The bootloader does not affect RAM usage.Īdafruit Pro Trinket - 5V 16MHz - General Specifications

The bootloader on the Pro Trinket use 4KB of FLASH so the maximum sketch size is 28,672 bytes.

The USB connection is for uploading new code only. 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.

There is no Serial-to-USB chip onboard.

You cannot plug shields directly into the Pro Trinket.

The example sketches all print to Serial and appear frozen, but the logic does otherwise continue to run. Adafruit Feather) WITH CAVEAT: USB Serial connection is clobbered on sleep if sketch does not require Serial comms, this is not a concern.

The onboard 5V regulator can provide 150mA output, not 800mA out Arduino Leonardo or other 32u4-based boards (e.g.

Pins #2 and #7 are not available (they are exclusively for USB).

Here are some things you may have to consider when adapting Arduino sketches: Adafruit Pro Trinket - 5V 16MHz is programmable using the Arduino IDE as you already set up, and 95% of Arduino projects will work out of the box! However, it uses 3V logic and 16MHz clock which means it's good when you want a lower-power and lower-voltage setup. It also has Optiboot support, so you can either program your Adafruit Pro Trinket - 5V 16MHz over USB or with a FTDI cable just like the Pro Mini and friends.Īdafruit Pro Trinket - 5V 16MHz uses the Atmega328P chip, which is the same core chip in the Arduino UNO/Duemilanove/Mini/etc. Like the Trinket, Adafruit Pro Trinket - 5V 16MHz has onboard USB bootloading support and a MicroUSB jack. It has 18 GPIO, 2 extra analog inputs, 28K flash and 2K of RAM. Demonstration sketch for Adafruit LCD backpack using MCP23008 I2C expander and DHT Temperature/Humidity Sensor Uses the 5 volt Trinket mini microcontroller with the Trinket set. I finally ordered and decided to go with the Pro Trinket. Adafruit Pro Trinket - 5V 16MHz designed for projects in which users need more pins, more flash and more RAM. Heres some things you may have to consider when adapting Arduino sketches: Pins 2 and 7 are not available (they are exclusively for USB) The onboard 5V. I wrote and compiled a sketch a long time ago in anticipation of buying a Trinket. It's like an Arduino Pro Mini with more pins and USB tossed in.

Adafruit Pro Trinket - 5V 16MHz combines everything you love about Trinket with the familiarity of the core Arduino chip, the ATmega328. 16MHz clock rate, 28K FLASH USB bootloader with a nice LED indicator looks just like a USBtinyISP so you can program it with AVRdude and/or the Arduino IDE (.

Adafruit trinket pro timer sketch