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COREi64 / 1581-Enhanced

This is an Enhanced version of the 1581 Drive PCB.
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Please confirm if R13 should be 150Ω instead of 1KΩ. #1

Open SteveGuidi opened 2 years ago

SteveGuidi commented 2 years ago

I was looking at the LED circuit on the PCB and realized that your BOM lists the value of R13 as 1KΩ. However, the C= schematics and BOM show R13 as 150Ω.

http://www.zimmers.net/anonftp/pub/cbm/schematics/drives/new/1581/1581-12.gif http://www.zimmers.net/anonftp/pub/cbm/schematics/drives/new/1581/1581-17.gif

Could you double-check and correct the BOM XLS file if needed? Of course, this isn't critical as the 1K resistor will just make the green LED dimmer.

I can submit a PR with this change if desired; I have some other links I used to source parts that may be useful for others too 🙂.

Jaystonian commented 2 years ago

It really depends on the voltage drop of the LED, which is a current-operated device. Also green is very sensitive to the human eye, in terms of Frequency Response, so it will always appear brighter given a matching LED of a different colour and same current. But you are correct, the original schematic shows 150 ohms.