10Pcs PCF8575 IO Expander Board Module I2C to 16 IO Extension Module I2C Communication Control 16 bit SMBus I/O Ports
Details
- BrandAITIAO
- Connectivity TechnologyI2C
- Included Componentsothers
- Operating SystemLinux
- CPU ManufacturerARM
Description
🚀 Expand Your Control, Elevate Your Projects!
- SMART INTERRUPT PIN - Open-drain interrupt output for instant input change alerts.
- COMPACT LIGHTWEIGHT - Sleek 1.57x0.83 inch design fits perfectly in any setup.
- PLUG PLAY I 2 C INTERFACE - Effortless integration with I2C protocol for streamlined communication.
- SEAMLESS 16 BIT EXPANSION - Unlock 16 additional I/O ports for ultimate MCU control.
- FLEXIBLE VOLTAGE COMPATIBILITY - Operates smoothly between 2.5V and 5.5V to fit diverse projects.
The 10Pcs PCF8575 IO Expander Board Module offers 16 quasi-bidirectional I/O pins controlled via I2C, supporting a wide voltage range (2.5-5.5V) and featuring an open-drain interrupt pin for efficient input change detection. Ideal for enhancing MCU capabilities in compact, professional-grade electronics projects.
Specifications
| Brand | AITIAO |
| Operating System | Linux |
| Item Weight | 1.76 ounces |
| Product Dimensions | 1.57 x 0.83 x 1.57 inches |
| Item Dimensions LxWxH | 1.57 x 0.83 x 1.57 inches |
| Color | 10PCS PCF8575 Expander Board |
| Processor Brand | ARM |
| Number of Processors | 1 |
| Manufacturer | AITIAO |
| ASIN | B0B82R7R17 |
| Country of Origin | China |
| Date First Available | July 29, 2022 |
Reviews
R**N
Works well once you solder the address lines.
I saw the review of the high failure rate and experienced the same failure. I then noticed that the address pins were floating and that if you want to have address 20, jump all the address pins on the back to gnd. After that, I had no failures.So far, they are working well.I am still testing.I am using this to read a Halleffect sensor array.
B**E
(Not) NOW a bad failure rate.... Dropped a few more stars due to failure
UPDATE:I'm now dropping my rating to 2 Stars as these are failing after 3- 5 days of continuous use.From all 10 units, only two are still working correctly. FYI - I'm putting in 5v and using all 16 pins as INPUT for hall sensors. If you're going to get these, you need to do your own QA for a few weeks first.PREVIOUS:I've tried a number of PCF8575 PCBs here on Amazon and these are probably the most consistent with a failure rate of only 20-25%. YES, I know it should be a failure of 0%, but to be honest... 20-25% is the best I have found on Amazon. I needed 6 boards and I was able to find 6 good ones out of the10 that were shipped. For other companies selling the same 'type' of PCF8575 I would have to order more than 10 pieces.Just expect that the 'actually' price for these boards is actually double the cost and you will be fine.PS: The address for an opened (no shorts on A0, A1, or A2) board should be 32 (HEX:0x20 or BIN:100000). If you get 39 (0x27) you know you have a bad board.
I**Y
Unreliable
So far 3 DOA and 1 last for a couple of hours. Avoid
Common Questions
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