Floppy and HDD Activity Led on PC Emulator

[lgpf]

Would be possible to add some kind of activity led for HDD/Floppy on those extra pins? Idea would be create a IBM PC XT and add those details on front panel.

[linus81]

Hi, no extra pins are needed. Just add a LED connected between the CS pin of the card reader and the 3.3V power supply. Connect the anode of the LED to 3.3V with a limiting resistor (for example 220 ohm) and connect the cathode of the LED to the CS pin. The LED turns on when the CS signal is low (I/O activity on the SD card).

[lgpf]

Thanks. You mean CS at pin 13 that is also available on that header (2, 13, 14, 12, 34, 39, gnd, 3v3)? Em seg., 23 de set. de 2024, 04:03, linus81 ***@***.***> escreveu:

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Hi, no extra pins are needed. Just add a LED connected between the CS pin of the card reader and the 3.3V power supply. Connect the anode of the LED to 3.3V with a limiting resistor (for example 220 ohm) and connect the cathode of the LED to the CS pin. The LED turns on when the CS signal is low (I/O activity on the SD card). led_sd.png (view on web) <https://github.com/user-attachments/assets/12de4401-0452-453d-b900-3a9f8df0fb78> — Reply to this email directly, view it on GitHub <#360 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BBTUQEXZIEMOJT4GAINWQ5LZX64MLAVCNFSM6AAAAABOVM6SR2VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTANZSGI2TEMA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[linus81]

Hi, exactly. the CS pin is GPIO13 in the MountSD default settings.

SDCard - HSPI
MOSI => 17 (12 on TTGO/WROVER)
MISO => 16 (2 on TTGO, 35 WROVER)
CLK => 14
CS => 13