OpenSprinkler Forums Comments, Suggestions, Requests 1.42u parts list misleading and wrong Re: Re: 1.42u parts list misleading and wrong

#25212

Ray
Keymaster

Peter, you don’t need to desolder the resistor networks: the values indicated in the part list are correct. Yes, they don’t match the schematic, but those values work too. Let me explain:

RN1 contains 4 pullup resistors. 10K is a standard pullup resistor value.
RN2 is for button detection, since it forms a voltage divider network, any resistor value would work
RN3 and RN4 are current limiting resistors for the triac, either 220ohm or 330ohm works.

You shouldn’t think that there is only one correct value for each resistor: the matter of fact is resistors can often vary across a pretty wide range of values.

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