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USE PCF8574 FOR ESP32 INPUT PORTS

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USE PCF8574 FOR ESP32 INPUT PORTS
GVDC Offline
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#1
02-01-2023, 03:41 PM
USE PCF8574 IIC EXTEND GPIO FOR ESP32 INPUT PORTS
Hello, 

I am very new working with Kincony 868 A8

I have downloaded the instructions from lesson 20 for installing input ports and copied them in e new sketch.
 
After uploading I see that all 8 Inports give "pressed key", continiously. Making contact between ground and 1 port (1 to 8) give no change. 
The serial monitor stays announcing all ports "pressed key".
 
Type : Kincony 868 A8 V1.5
Thanks
What is wrong?
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Messages In This Thread
USE PCF8574 FOR ESP32 INPUT PORTS - by GVDC - 02-01-2023, 03:41 PM
RE: USE PCF8574 FOR ESP32 INPUT PORTS - by admin - 02-02-2023, 01:05 AM
RE: USE PCF8574 FOR ESP32 INPUT PORTS - by GVDC - 02-02-2023, 12:31 PM
RE: USE PCF8574 FOR ESP32 INPUT PORTS - by admin - 02-02-2023, 01:41 PM
RE: USE PCF8574 FOR ESP32 INPUT PORTS - by GVDC - 02-02-2023, 05:49 PM
RE: USE PCF8574 FOR ESP32 INPUT PORTS - by admin - 02-05-2023, 12:55 AM
RE: USE PCF8574 FOR ESP32 INPUT PORTS - by GVDC - 02-05-2023, 07:21 AM
RE: USE PCF8574 FOR ESP32 INPUT PORTS - by GVDC - 02-28-2023, 07:43 PM
RE: USE PCF8574 FOR ESP32 INPUT PORTS - by admin - 03-01-2023, 12:30 AM
RE: USE PCF8574 FOR ESP32 INPUT PORTS - by GVDC - 03-08-2023, 09:41 AM
RE: USE PCF8574 FOR ESP32 INPUT PORTS - by admin - 03-08-2023, 10:27 AM

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