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Full machine-readable index: https://core-electronics.com.au/llms.txt # Adafruit Trinket - Mini Microcontroller - 3.3V Logic - MicroUSB **Type:** Product page · **SKU:** ADA1500 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia) **Page:** https://core-electronics.com.au/adafruit-trinket-mini-microcontroller-3-3v-logic.html ([markdown](https://core-electronics.com.au/adafruit-trinket-mini-microcontroller-3-3v-logic.html.md)) 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. Adafruit... ## Pricing - **Price:** $13.65 (inc GST) — $12.41 AUD, exc GST - **Quantity discounts:** 10+ $12.04 (exc GST) · 50+ $11.79 (exc GST) ## Availability & dispatch - In stock, ships same business day if ordered before 2PM (Australia/Sydney). - We can dispatch 2 today, and up to 500 more in 8–12 days. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA1500:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/ADA1500:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description **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 Adafruit still carry the Trinket so that people can maintain some older projects, Adafruit no longer recommend it.** [Please check out the Trinket M0](https://core-electronics.com.au/adafruit-trinket-m0-for-use-with-circuitpython-arduino-ide.html). It has built-in USB, more capabilities, and is comparable in price! 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. Adafruit wanted to design a microcontroller board that was small enough to fit into any project, and low cost enough to use without hesitation. 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. It's Adafruit's lowest-cost arduino-IDE programmable board! 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. Adafruit designed a USB bootloader so you can plug it into any computer and reprogram it over a USB port just like an Arduino. In fact Adafruit even made some simple modifications to the Arduino IDE so that it works like a mini-Arduino board. You can't stack a big shield on it but for many small & simple projects the Trinket will be your go-to platform. **This is the 3V Trinket**. There are two versions of the Trinket. One is 3V and one is 5V. Both work the same, but have different operating logic voltages. 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. The 3V version should only run at 8 MHz. Use the 5V one for sensors and components that can use or require 5V logic. The 5V version can run at 8 MHz or at 16MHz by setting the software-set clock frequency. Even though you can program Trinket using the Arduino IDE, it's not a fully 100% Arduino-compatible. There are some things you trade off for such a small and low cost microcontroller! - Trinket does not have a Serial port connection for debugging so the serial port monitor will not be able to send/receive data - Some computers' USB v3 ports don't recognize the Trinket's bootloader. Simply use a USB v2 port or a USB hub in between Here are some useful specifications! - ATtiny85 on-board, 8K of flash, 512 byte of SRAM, 512 bytes of EEPROM - Internal oscillator runs at 8MHz, but can be doubled in software for 16MHz - **USB bootloader with a nice LED indicator looks just like a USBtinyISP so you can program it with AVRdude** (with a simple config modification) **and/or the Arduino IDE** (with a few simple config modifications) - 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. - Adafruit really worked hard on the bootloader process to make it rugged and foolproof, this board wont up and die on you in the middle of a project! - ~5.25K bytes available for use (2.75K taken for the bootloader) - **Available in both 3V and 5V flavors** - On-board 3.3V or 5.0V 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 #1 LED - Reset button for entering the bootloader or restarting the program. No need to unplug/replug the board every time you want to reset or update! - 5 GPIO - 2 shared with the USB interface. The 3 independent IO pins have 1 analog input and 2 PWM output as well. The 2 shared IO pins have 2 more analog inputs and one more PWM output. - Hardware I2C / SPI capability for breakout & sensor interfacing. - Works with many basic Arduino libraries including Adafruit Neopixel! - Mounting holes! Yeah! - Really really small For a lot more details, including a tour of the Trinket, pinout details and Arduino IDE examples, check out the Introducing Trinket tutorial Play video: New Products 5/27/2015 This embedded content is from a site (www.youtube.com, flickr.com, etc) that does not comply with the Do Not Track (DNT) setting now enabled on your browser. Clicking through to the embedded content will allow you to be tracked by the embed provider. ## Technical Details **Revision History:** - **As of Sep 11, 2023** - this version now comes with nicer tactile buttons. You may get the new tactile buttons or the older version both are identical other than that. - **As of May 27th, 2015 the 3.3V Trinket has been revised!** The board is now even smaller - at just 27mm x 15mm - and comes with a micro-B USB connector rather than mini-B **Specifications:** - Dimensions: 1.1" x 0.6" x 0.2" / 27mm x 15 x 4mm - Weight (no headers): 1.85 grams - [Datasheet, EagleCAD PCB files, schematics, and Fritzing Library available in the product tutorial](https://learn.adafruit.com/introducing-trinket/downloads) ![RoHS 2 2011 65 EU Compliant](https://core-electronics.com.au/attachments/localcontent/RoHS2_2011_65_EU_7356c5574c.svg)![RoHS 2 2015 863 EU Compliant](https://core-electronics.com.au/attachments/localcontent/RoHS2_2015_863_EU_86773f57f9.svg) Learn ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/1/5/1500-06.jpg)