expander pi
The Expander Pi is an Analogue, Digital and RTC development Interface for the Raspberry Pi
18/12/2015
Posted by:
ajaydange
Hello,am new with raspberry pi & exapnder pi.I have a couple of sensors ,relays,led,dc motors working on 5v .
O/p of digital sensors is 5v.Can these sensors directly connected with expander pi pins?also can an analog sesnor with o/p > 3.3v be directly connected to expander pi ADC pins?
O/p of digital sensors is 5v.Can these sensors directly connected with expander pi pins?also can an analog sesnor with o/p > 3.3v be directly connected to expander pi ADC pins?
18/12/2015
Posted by:
andrew
Hello
The digital inputs on the Expander Pi can work with 5V sensors. Depending on the type of sensor you may find that you need to use a 10K pull-down resistor connected between the input and ground to keep the input low when the sensor is not active.
The analogue inputs can read between 0 and 4.096V so your 3.3V sensor should work ok.
The digital inputs on the Expander Pi can work with 5V sensors. Depending on the type of sensor you may find that you need to use a 10K pull-down resistor connected between the input and ground to keep the input low when the sensor is not active.
The analogue inputs can read between 0 and 4.096V so your 3.3V sensor should work ok.
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