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Set of noob questions !


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No, your calculation does not account for the load of the MSP430.

It is best to use two diodes in series, each casuing a drop of 0.7 V, 5V - 0.7V - 0.7V = 3.6V

Alternatively use a resistor divider: connect a resistor (say 1k) between the PIC and the MSP430, then connect a 2k resistor from the MSP430 (same pin) to ground. (google voltage divider).

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No, your calculation does not account for the load of the MSP430.

It is best to use two diodes in series, each casuing a drop of 0.7 V, 5V - 0.7V - 0.7V = 3.6V

Alternatively use a resistor divider: connect a resistor (say 1k) between the PIC and the MSP430, then connect a 2k resistor from the MSP430 (same pin) to ground. (google voltage divider).

Thanks Runner, what kind of diode ? 1n4148 ? 1n4007 ?

 

I will google the tips.

 

Have a nice day.

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