Recent content by eva_402

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    JK Flip-Flop Toggles Twice from One Button Press

    Hi everyone, I’m using a JK flip-flop for a simple state control circuit. Pressing the push button should toggle once, but sometimes the output changes twice or returns to the previous state. The button has only a resistor and capacitor debounce network. Questions: Is the issue likely...
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    UART Communication Becomes Unstable Near Motor Driver Section

    Hi all, I’m building a robotic platform where an STM32 communicates with another controller over UART. Communication is clean until the BLDC driver starts switching under load. Then I get framing errors and occasional packet loss. The UART traces pass near the gate driver area on a 2-layer...
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    ESP32 LED control, power issues

    That makes sense, so it’s probably a power issue rather than my code. I’ll try using a separate 5 V supply for the LEDs and make sure to keep the ESP32 logic isolated. Thanks for pcb tips, jst want to confirm 1 thing, in your view, the led traces should be thicker than the logic traces ?
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    ESP32 LED control, power issues

    Hey guys, I’m new here and need some help… I’m building a smart LED controller with ESP32, the firmware is mostly done (like 80% lol), it can control 16 LEDs over WiFi and accept commands from my phone app, but now I have a problem. When I turn on more than 10 LEDs at same time, sometimes ESP32...
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