Barometer Pressure Module HOPE HP03

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  1. - 20th June 2009, 04:47 #1
    Bill Legge's Avatar
    Bill Legge
    Bill Legge is offline Member
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    Default HOPE Circuit 3/5 Volts

    The circuit on the attached JPEG has been running well. At $25 a go for the HOPE HP03 I'm reluctant to risk the direct connection between the 3.3 and 5 Volt chips.

    Regards Bill legge
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  2. - 20th June 2009, 07:50 #2
    wjsmarine's Avatar
    wjsmarine
    wjsmarine is offline Member
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    Default Zener protection

    Hi Bill,

    I use the same setup as BrianT however also add a 3v zener to ground on the data pin (cathode) and a series 220R resistor going to the 5v PIC, just in case...

    Regards,
    Bill
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