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air001 main controller LED/PWM capture

Overview

It can detect the on/off state of LEDs or changes in the voltage level of pins, calculate the event frequency and duty cycle, and display the results on a digital tube.

In projects where refresh rate information is needed, such as during screen refresh in a loop, but relying on UART to transmit frame rate information has a significant impact in scenarios with high speed requirements, the onboard LEDs or pins can have their voltage levels changed slightly during each loop, and the refresh rate can then be observed through this device. (Oscilloscopes or logic analyzers are optional.)

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:2026-03-26 19:25:53

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