Allows simultaneous use of four boards, up to 64 I/O ports
Supports 16-ch common anode constant current LED
Adjustable current and 256-step linear dimming
Compatible with Raspberry Pi, micro:bit, Arduino, and STM32
The Waveshare AW9523B IO Expansion Board, I2C Interface, Expands 16 I/O Pins features an I2C interface and expands 16 I/O pins. Controlled via the I2C bus, it allows the simultaneous use of four expansion boards, extending up to 64 I/O ports. The board supports driving 16-ch common anode constant current LED, 256-step linear dimming, and adjustable current.
It also provides an output interrupt (INT) signal upon input port state changes, I2C address reconfigurability via A0/A1 jumpers, and two connector options: PH2.0 header and solder pads. The onboard voltage translator is compatible with 3.3V/5V levels, and development resources and manuals are included for Raspberry Pi, micro:bit, Arduino, and STM32.
If you are not satisfied for whatever reason with a Product you bought on the Site, it is possible to return it for refund within 30 days from the date you received it unless otherwise indicated in the Product listing. You must first advise the Vendor associated with your order in your account to obtain a return authorization (‘’RA’’) number before returning a Product. (‘’RA’’) numbers are valid for 30 days, within which time the returned Products should be received by the Vendor. No returns will be accepted without having previously obtained an (‘’RA’’) number. The Product must then be returned in its original packaging (in perfect condition for resale) with its receipt and your (‘’RA’’) number. Reimbursement will be denied for any Products which do not conform to the above mentioned conditions.
Build-it-yourself Robot Parts are not refundable once assembled. Robots & Kits requiring assembly or soldering are also not refundable once assembled, soldered or modified in any way. All sales of robotic software and apps are final and cannot be refunded or exchanged. Returns are not accepted on special orders and clearance items except when they are found defective, in which case the Product may be repaired or replaced at the Vendor’s discretion. 20% Restocking fees may apply if you are returning a large quantity of the same Product that was ordered specifically for you from the manufacturer.
Please note that all items will be reimbursed within 7 to 14 days of receiving the Product (shipping fees excluded). You must also cover the cost of returning the Product. Shipping fees will only be refunded if the return is a result of a shipping error on our part. Cleaning fees of USD 100 may also be charged if a domestic robot is returned and has not been properly cleaned.
