> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Adafruit Itsy Bitsy 32u4 - 3V 8MHz **Type:** Product page · **SKU:** ADA3675 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia) **Page:** https://core-electronics.com.au/adafruit-itsy-bitsy-32u4-3v-8mhz.html ([markdown](https://core-electronics.com.au/adafruit-itsy-bitsy-32u4-3v-8mhz.html.md)) What's smaller than a Feather but larger than a Trinket? It's an Itsy Bitsy! Small, powerful, Arduino-compatible - this microcontroller board is perfect when you... ## Pricing - **Price:** $17.30 (inc GST) — $15.73 AUD, exc GST - **Quantity discounts:** 10+ $15.25 (exc GST) · 50+ $14.95 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 25 and Aug 31. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA3675:1` (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/ADA3675:1.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 What's smaller than a Feather but larger than a Trinket? It's an Itsy Bitsy! Small, powerful, Arduino-compatible - this microcontroller board is perfect when you want something very compact, but still with a bunch of pins. Itsy Bitsy is only 1.4" long by 0.7" wide, but has 6 power pins, 6 analog & digital pins and 17 digital pins. It packs much of the same capability as an Arduino UNO or Feather 32u4. So it's great once you've finished up a prototype on a bigger Arduino, and want to make the project much smaller. The **Itsy Bitsy 32u4 3V 8MHz** uses the Atmega32u4 chip, which is the same core chip in the Arduino Leonardo as well as the same chip are used in Adafruit's Feather 32u4. It even runs at the same voltage and speed as the Feather 32u4, so you'll be happy to hear that not only is Itsy Bitsy programmable using the Arduino IDE as you already set up, but a vast number of projects will work out of the box! Adafruit recommend this as an upgrade from the [Pro Trinket 3V](https://core-electronics.com.au/adafruit-pro-trinket-3v-12mhz.html) because this has native USB so it will work with all computers, USB serial debugging, and a more reliable bootloader. [You can even use the Pro Trinket LiPo backpack with this board to add recharge-able battery.](https://core-electronics.com.au/adafruit-pro-trinket-liion-lipoly-backpack-add-on.html) Adafruit have two special pins on the 3V version of this board. There's a **VHigh** pin, this pin is a power pin whose voltage is the *higher* of VBAT and VUSB. They also made the **digital #5** pin extra special on this board, it connects to a level shifter so it is *only an output* but the output is that 'high logic'. Basically what this means is if you want to drive NeoPixels, a picky servo, or a high-dropout-voltage LED from this board, and you want a 5V-logic-level output, this pin is the one you should use! Here's some handy specifications: - ATmega32u4 onboad chip in QFN package - 3.3V power and logic, 8 MHz clock rate, 2KB RAM and 28K FLASH - USB bootloader with a nice LED indicator, AVR109 compatible (same as Flora, Feather 32u4, Leonardo, etc) - Micro-USB jack for power, USB uploading and debugging, you can put it in a box or tape it up and use any Micro USB cable for when you want to reprogram. - Can act as a USB HID Keyboard, Mouse, MIDI or plain USB 'CDC' serial device (default) - On-board 3.3V power regulator with 500mA output capability and ultra-low dropout. Up to 6V input, reverse-polarity protection, thermal and current-limit protection. - Special **Vhigh** output pin gives you the higher voltage from VBAT or VUSB, for driving NeoPixels, servos, and other high-current devices. **Digital 5** level-shifted output for high-voltage logic level output. - Power with either USB or external output (such as a battery) into VBAT pin - it'll automatically switch over - On-board red pin #13 LED - 23 GPIO total - 6 analog in, 1x SPI port, 1x I2C port, 1x Hardware Serial port and 10 more GPIO, 4 of which have PWM - Can drive NeoPixels, connect to sensors, servos, etc. - Reset button for entering the bootloader or restarting the program. [Once headers are installed they can be fitted into 0.6" wide sockets](https://core-electronics.com.au/catalog/product/view/sku/ADA2206) ## Technical Details Product Dimensions: 35.0mm x 17.0mm x 4.2mm / 1.4" x 0.7" x 0.2" Product Weight: 2.7g / 0.1oz ![](https://core-electronics.com.au/attachments/localcontent/rohs_icon_8216055e11.jpg) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/3/6/3675-00.jpg)