There are some things you trade off for such a small and low cost microcontroller! The 5V version can run at 8 MHz or at 16MHz by setting the software-set clock frequency.Įven though you can program Trinket using the Arduino IDE, it's not a fully 100% Arduino-compatible. Use the 5V one for sensors and components that can use or require 5V logic. Use the 3V one to interface with sensors and devices that need 3V logic, or when you want to power it off of a LiPo battery. Both work the same, but have different operating logic voltages. You can't stack a big shield on it but for many small & simple projects the Trinket will be your go-to platform. In fact we even made some simple modifications to the Arduino IDE so that it works like a mini-Arduino board. We designed a USB bootloader so you can plug it into any computer and reprogram it over a USB port just like an Arduino. The Attiny85 is a fun processor because despite being so small, it has 8K of flash, and 5 I/O pins, including analog inputs and PWM 'analog' outputs. It's our lowest-cost arduino-IDE programmable board! Perfect for when you don't want to give up your expensive dev-board and you aren't willing to take apart the project you worked so hard to design. We wanted to design a microcontroller board that was small enough to fit into any project, and low cost enough to use without hesitation. ATmega32u4 16MHz : Arduino Leonardo, Arduino Micro, Arduino Yun, Teensy 2.Trinket may be small, but do not be fooled by its size! It's a tiny microcontroller board, built around the Atmel ATtiny85, a little chip with a lot of power.ATmega328 12MHz : Adafruit Pro Trinket 3V.ATmega328 16MHz : Arduino UNO, Adafruit Pro Trinket 5V, Adafruit Metro 328, Adafruit Metro Mini.SDA/SCL default to pins 4 & 5 but any two pins can be assigned as SDA/SCL using Wire.begin(SDA,SCL) Written by Kevin (KTOWN) Townsend for Adafruit Industries. Please support Adafruit and open-source hardware by purchasing products from Adafruit! Because pressure changes with altitude you can also use it as an altimeter! About this DriverĪdafruit invests time and resources providing this open source code. This precision sensor from Bosch is the best low-cost sensing solution for measuring barometric pressure and temperature. This driver is for the Adafruit BMP280 Breakout Adafruit BMP280 Driver (Barometric Pressure Sensor)
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