> **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 NeoTrellis RGB Driver PCB for 4x4 Keypad **Type:** Product page · **SKU:** ADA3954 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia) **Page:** https://core-electronics.com.au/adafruit-neotrellis-rgb-driver-pcb-for-4x4-keypad.html ([markdown](https://core-electronics.com.au/adafruit-neotrellis-rgb-driver-pcb-for-4x4-keypad.html.md)) By popular request, Adafruit have upgraded Adafruit's popular Trellis elastomer button kits to now have a PCB with full color NeoPixel support! You heard that right, no more single-color... ## Pricing - **Price:** $25.60 (inc GST) — $23.27 AUD, exc GST - **Quantity discounts:** 10+ $22.57 (exc GST) · 50+ $22.11 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Sep 04 and Sep 08. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA3954:1` (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/ADA3954:1.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 By popular request, Adafruit have upgraded Adafruit's popular Trellis elastomer button kits to now have a PCB with *full color NeoPixel* support! You heard that right, no more single-color LEDs, you can now have any color you like under the fantastic rubbery button pads Adafruit sell. These 4x4 button pad boards are fully tile-able and communicate over I2C. With 5 address pins, you've got the ability to connect up to 32 together in any arrangement you like. [With Adafruit's trusty seesaw I2C-to-anything chip](https://learn.adafruit.com/adafruit-seesaw-atsamd09-breakout), you don't even need to manage the NeoPixel driving. That's right! Both the button management and LED driving is completely handled for you all over plain I2C. With both Arduino/C++ and CircuitPython/Python library support, you can use these pads with any and all microcontroller or computer boards. Perfect for your next cool interface, MIDI instrument, control panel...whatever could benefit from beautiful diffused colorful buttons. For fast connection to a single board, Adafruit include a JST-PH 4-pin connector that will give you power+data access. It's Grove compatible (the cable fits, even though its not the exact same connector), [or you can use a JST-PH 4 pin cable](https://core-electronics.com.au/stemma-cable-150mm-6-long-4-pin-jst-ph-cable-female-female.html). **You can tile up to 32 boards together by soldering them edge-to-edge and soldering closed the I2C address jumpers, then use one I2C connection for *all* tiled NeoTrellis boards!** Each order comes with one NeoTrellis board with seesaw chip and 16 NeoPixels already soldered in place. **Elastomer button pad not included, [so be sure to pick one up](https://core-electronics.com.au/silicone-elastomer-4x4-button-keypad-for-3mm-leds.html)!** ## Technical Details - Dimensions: 60mm / 2.4" x 60mm / 2.4" x 4mm / 0.2" - This board/chip uses I2C 7-bit addresses between **0x2E** to **0x4D** selectable by soldering jumpers on the back of the board. Product Dimensions: 60.0mm x 60.0mm x 7.5mm / 2.4" x 2.4" x 0.3" Product Weight: 13.3g / 0.5oz ![](https://core-electronics.com.au/attachments/localcontent/rohs_icon_8216055e11.jpg) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/a/d/adafruit-neotrellis-rgb-driver-pcb-for-4x4-keypad-3.jpg)