Firmware, Power On Status, report source of hardware fault
@TheBakedPotato is already working on this.
Since Mar 9, 2026.
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Description
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When powering on the device, if a hardware fault is encounter, like a non-functioning DFPlayer, it would be beneficial to indicate to the user the possible source of the hardware fault.
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Akin to the motherboard/computer POST process, the motherboard may indicate the error code in a seven segment display or a combination of LED blinks and speaker beeps.
CC: @nk25719
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