[sdiy] bizarre pic-midi issues

[Csaba Zvekan]

I use a 6n135 with a 1K pull-up and a 0.1µF capacitor to ground. It works like a charm . Ingo you have a valid point there . I still think his problem is clocking and settings.


On Apr 17, 2010, at 10:02 PM, Ingo Debus wrote:

> 
> Am 16.04.2010 um 20:19 schrieb Karl Ekdahl:
> 
>> The hardware i'm using is a PIC18F4550 connected with it's RX pin tied to pin 6 of a 6N136 via a 2.7K pull-up resistor,
> 
> In the Fairchild datasheet of the 6N136 propagation delay times are specified for a pull-up of 1.9k. Admitted, 2k7 isn't that much more, but maybe its worth a try using a smaller pull-up to speed up the optocoupler?
> 
> Ingo
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