Yes it has problems pulling it up, but it has no problems pulling it down, so I added 2.2K resistor from input of ULN to +5V and now it can be controlled with PC8575.
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Re: PCF8575 Does not work with my code....
Yes it has problems pulling it up, but it has no problems pulling it down, so I added 2.2K resistor from input of ULN to +5V and now it can be controlled with PC8575.
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