> **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

# 18-Channel 8-bit PWM LED Driver w/ I2C Interface

**Type:** Product page · **SKU:** CE04450 · **Brand:** [Pimoroni](https://core-electronics.com.au/brands/pimoroni-australia) · **GTIN:** 0700161460858
**Page:** https://core-electronics.com.au/18-channel-8-bit-pwm-led-driver-w-i2c-interface.html ([markdown](https://core-electronics.com.au/18-channel-8-bit-pwm-led-driver-w-i2c-interface.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## How to buy

- **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

Pimoroni loved the little SN3218A chip they used to make PiGlow so much that they've decided to turn it into a handy little breakout module.

This is a super low-cost way to drive 18 LEDs at constant current up to 34mA per channel. Simply hook up the cathode of your LEDs to the channel and provide a common 5V supply for the anodes and away you go!

- 2.75 - 5.5V supply and logic voltage
- Up to 34mA per channel constant current sinking (adjustable)
- Bread-board compatible format
- I2C interface (address 0x54)
- Supplied with 0.1" headers to solder yourself
 
The I2C interface is very simple to use and works with Raspberry Pi, Arduino, and most other platforms - the device address is 0x54. With the Raspberry Pi you can use the 3V3 supply to power the chip (via the VCC pin on the breakout board) and the 5V supply to power the LEDs.

Pimoroni have an Arduino library available [here](https://github.com/pimoroni/pimoroni_arduino_sn3218)

Need some LEDs? Check out our range of LED's to suit your project

## Guides for this product

- [PWM Expanders for Particle](https://core-electronics.com.au/guides/particle/pwm-expanders-for-particle/)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/c/e/ce04450-1.jpg)