{"title":"Adafruit Pro Trinket - 5V","handle":"adafruit-pro-trinket-5v","url":"/products/adafruit-pro-trinket-5v","description":"\nNote: The Pro Trinket's bit-bang USB technique is a legacy approach that may not work reliably with modern operating systems. For new projects, consider an ItsyBitsy or Metro Mini board with native USB support at a comparable price.\n\n\nThe Adafruit Pro Trinket 5V is a compact ATmega328P-based microcontroller board that packs Arduino UNO-level capability into a 1.5\" × 0.7\" form factor. Running at the same 5V and 16 MHz as the UNO, it's compatible with 99% of Arduino sketches right out of the box. It's programmable via the Arduino IDE using the on-board USB bootloader or an FTDI serial connection.\n\nKey Features\n\n\nATmega328P Processor – Same chip as the Arduino UNO, running at 5V and 16 MHz\n\n18 GPIO Pins – Including 2 extra analogue inputs beyond standard Trinket (pins 2 and 7 reserved for USB)\n\n28 KB Flash / 2 KB RAM – 4 KB used by bootloader, 28,672 bytes available for sketches\n\nMicro-USB Connector – For power and code uploads via USBtinyISP-compatible bootloader\n\nFTDI Header – Alternative serial programming and debugging via FTDI cable\n\n5V Regulator – 150 mA output, up to 16V input, with reverse-polarity and thermal protection\n\nAuto Power Switching – Automatically switches between USB and external battery power\n\nPower and Status LEDs – Green power LED and red LED on pin 13\n\nReset Button – Enter bootloader or restart your program\n\nMounting Holes – For secure physical installation\n\n\nLimitations\n\nPins 2 and 7 are reserved for USB and unavailable for general use\nNo Serial-to-USB chip — use an FTDI cable for serial monitor access\nCannot plug Arduino shields directly onto the board\n5V regulator provides 150 mA (not the 800 mA of a full UNO)\n\n\nAlso Consider\n\n\nPro Trinket 3V – Same board running at 3.3V / 12 MHz for lower-voltage projects\n\n\nIdeal For\n\nCompact versions of Arduino UNO projects\nWearable electronics and small-form-factor builds\nPortable and battery-powered projects\nPrototyping before moving to a final embedded design\n\n\nPackage Contents\n\n1× Adafruit Pro Trinket 5V (assembled, without headers)\n\n\nResources\n\nIntroducing Pro Trinket Tutorial\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":13944,"title":"Default Title","sku":"AF-2000","price":20.18,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":29,"option1":"Default Title"}]}