Adafruit Trinket - Mini Microcontroller - 5V Logic

Adafruit, MIT

Deprecation Warning: The Trinket bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So while we still carry the Trinket so that people can maintain some older projects, we no longer recommend it.

BAT+
Battery or external positive input. Adafruit states BAT+ is the Battery + Input pin for a battery, power adapter, solar panel, or other source, reverse-polarity protected.
Type · powerVoltage · Up to 16V DC; for 3V Trinket use at least 3.5V input, for 5V Trinket 5.5V or higher suggested.
USB+
USB 5V output, present only when Trinket is plugged into the Mini-B USB connector; can be used for USB power sensing or higher-current USB-powered loads.
Type · powerVoltage · 5V from USB, Adafruit notes 500mA+ available from USB ports.
GND
Common ground for logic and power, connected to USB ground and the regulator.
Type · groundVoltage · 0V
GPIO #0 / PB0
Digital input/output; PWM output; I2C data; SPI data input.
Type · gpioVoltage · 5V GPIO output level; Adafruit says it can be used with 3V inputs but may damage 3V-input-only devices.
GPIO #1 / PB1
Digital input/output; PWM output; SPI data output; connected to the onboard LED.

Start wiring

Up to 16V DC; for 3V Trinket use at least 3.5V input, for 5V Trinket 5.5V or higher suggested. · 5V from USB, Adafruit notes 500mA+ available from USB ports.

Confirm the data interface matches your host board.

Module pins: BAT+, USB+, 5V, GND, GPIO #0 / PB0, GPIO #1 / PB1, GPIO #2 / PB2 / A1, GPIO #3 / PB3 / A3. Schematik maps them to your board in the app.

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