Servos and Pir''s
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Posts: 46,084
> I have just found a schematic that showed that when a servo is connected to
> the basic stamp2 I/O it should go through a 10K resistor, and also diodes
> should also be put between the v+ and data, and Gnd and data. However, the
> BasicStamp book shows a direct connection without any diodes or resistor. I
> presently am using it without any and it seems to work fine !!
I am also looking to use a Pir (from an alarm system) to detect movement in a
area.
I intend to connect the common connection on the PIR switch to +5V and the NO
side to one of the input pins and use the Input comand to determine if the
signal is present. Is this correct ??? Do I need a resistor to keep the pin to
Gnd, if so what size
I also am going to drive two pins high to control two relays, using the high
command. I realize that I need to go through another device to allow for the
high current draw, but still have not decited what to do.
Thanks
Don Brunner
> the basic stamp2 I/O it should go through a 10K resistor, and also diodes
> should also be put between the v+ and data, and Gnd and data. However, the
> BasicStamp book shows a direct connection without any diodes or resistor. I
> presently am using it without any and it seems to work fine !!
I am also looking to use a Pir (from an alarm system) to detect movement in a
area.
I intend to connect the common connection on the PIR switch to +5V and the NO
side to one of the input pins and use the Input comand to determine if the
signal is present. Is this correct ??? Do I need a resistor to keep the pin to
Gnd, if so what size
I also am going to drive two pins high to control two relays, using the high
command. I realize that I need to go through another device to allow for the
high current draw, but still have not decited what to do.
Thanks
Don Brunner