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Description
PCF8574T IO IIC Expansion Module Sensor Module by Dagu Robot
Includes an 8-bit quasi-bidirectional port
Working voltage: 3.3 V ~ 5 V
Output type: IIC
IIC address: 3 hardware address pins can have 8 addresses
Interface mode: pH2.0 ~ 4P
The Dagu Robot PCF8574T IO IIC Expansion Module Sensor Module is a CMOS circuit, which can realize the remote I / O expansion of most MCU through two bidirectional buses. The device includes an 8-bit quasi-bidirectional port ("quasi" means "basically", that is, "quasi bidirectional port") is not a real bidirectional port. Therefore, the real two-way port and a bus interface (the connection circuit between the device connected on the bus and the bus is called the bus interface) are the ones with direction judgment.
The current consumption of PCF8574T is very low, and the output is locked. It has the ability of high current driving and can drive led directly. It also has an interrupt connection which can be connected with the interrupt logic of the MCU. When the interrupt signal is sent through int, the remote I / O port does not need to pass the bus communication to inform MCU whether there is data input from the port. This means that PCF8574T can be used as a single controller.
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.
