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(Verified) Module-DL1414+PCA9555

Overview

Use PCA9555 to expand the IIC interface of ESP8266 to 16 IO ports, which are used to drive two HPDL1414 display modules and four buttons. An IPHONE6 linear motor is installed on the back for vibration prompts. It can be used as a clock, fan count display, etc., allowing you to give full play to your imagination.

I am a novice in programming. After a simple experiment, there should be no problem with the hardware. The complete code has not been written yet. I am now collecting the code for this module. If you are interested, please contact me. I will send you the full set of modules (including ESP8266 module, burning module, and lithium battery). Power supply module) and send it. There was also a radio module before, which can also be developed together.

Effect:

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-20 19:10:33

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