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Full machine-readable index: https://core-electronics.com.au/llms.txt # Adafruit IS31FL3741 13x9 PWM RGB LED Matrix Driver - STEMMA QT / Qwiic **Type:** Product page · **SKU:** ADA5201 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia) **Page:** https://core-electronics.com.au/adafruit-is31fl3741-13x9-pwm-rgb-led-matrix-driver-stemma-qt-qwiic.html ([markdown](https://core-electronics.com.au/adafruit-is31fl3741-13x9-pwm-rgb-led-matrix-driver-stemma-qt-qwiic.html.md)) Add a splash of RGB LEDs to a project you're working on, with this adorable 13x9 RGB LED matrix breakout. It features -- no surprise -- 117 RGB LEDs,... ## Pricing - **Price:** $26.35 (inc GST) — $23.95 AUD, exc GST - **Quantity discounts:** 10+ $23.24 (exc GST) · 50+ $22.75 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Sep 07 and Sep 09. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA5201:1` (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/ADA5201:1.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 ## Description Add a splash of RGB LEDs to a project you're working on, with this adorable 13x9 RGB LED matrix breakout. It features -- no surprise -- 117 RGB LEDs, each one 2x2mm in size, in a 13x9 grid with 3mm pitch spacing. [Unlike Adafruit's 8x8 dotstar grid here](https://core-electronics.com.au/adafruit-dotstar-high-density-8x8-grid-64-rgb-led-pixel-matrix.html), these are not NeoPixel or DotStar or other 'smart' RGB LEDs. Instead of having a lil chip in each LED, there's one large controller chip that handles all the PWM for you. The ISSI IS32FL3741 communicates over I2C and can set each LED element with 8 bit PWM for 24-bit color across the RGB elements, for beautiful color! There's an adjustable current driver so you can brighten or dim the whole display without losing color resolution. Each assembled board comes with the grid, four mounting holes, and the IS31FL3741 chip with all supporting circuitry. The board can run from 3.3 to 5V DC power and logic - powering from 5V is recommended since the green and blue LEDs look better with the extra headroom. Adafruit designed the PCB so you can tile the boards side-to-side if you desire, you'll just have to cut/solder the jumpers on the bottom to change the I2C address: Up to 4 boards can share one I2C bus. [Use Arduino](https://github.com/adafruit/Adafruit_IS31FL3741) or [CircuitPython/Python to quickly set pixels](https://github.com/adafruit/Adafruit_CircuitPython_IS31FL3741) to any color you desire. Note that I2C makes this board very easy to wire up [compared to Adafruit's "HUB75"-style RGB LED Matrices](https://core-electronics.com.au/#) *but* that also makes the display slower because each pixel must be written over I2C. For a small display with simple animations, its fine - but if you want to do video or larger graphics Adafruit recommend upgrading to the HUB75 style. Adafruit made it easy for you to get some color right into your next project. The LED matrix and circuitry is soldered onto a custom-made PCB with two [STEMMA QT connectors](https://learn.adafruit.com/introducing-adafruit-stemma-qt/what-is-stemma-qt) on the top, and are compatible with the [SparkFun Qwiic](https://core-electronics.com.au/catalogsearch/result/?q=qwiic) I2C connectors. This allows you to make solderless connections between your development board and the IS31FL3741 or to chain it with a wide range of other sensors and accessories using a [**compatible cable**](https://core-electronics.com.au/search/?q=stemma%20qt%20cable). ## Technical Details Product Dimensions: 51.3mm x 39.0mm x 4.6mm / 2.0" x 1.5" x 0.2" Product Weight: 5.8g / 0.2oz ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/i/m/image_1122.jpg)