Propeller Activity Board pre sale question

ftguy2016

Hi,

Are the input pins 5V tolerant in the Propeller Activity Board ? If not ... will some resistor in series be enough ?

Thank you.

Publison

Welcome to the Forums!

Pins P12-P17 on the servo headers have 3.9K resistors in line.
(Page 6 of the schematic ) https://www.parallax.com/sites/default/files/downloads/32910-Propeller-Activity-Board-RevA-Schematics.pdf

Note: if you use P12-17 on the left side of the breadboard, they DO NOT have the series resistor.

tomcrawford

This thread talks about the inputs

xanadu

Welcome! I'll guess OP meant ADC...


10) Analog to Digital Converter
Use the Analog to Digital Converter to monitor the voltage at analog inputs labeled A/D 0, 1, 2, and 3. It
will give a number from 0 to 4095, which tells what the voltage is in a range from 0 to 5 volts. The
converter used here is a 12-bit, 200 ksps SPI ADC, with a 5 V reference.

If not there's great documentation here - https://www.parallax.com/downloads/propeller-activity-board-guide

Publison

xanadu wrote: »

Welcome! I'll guess OP meant ADC...

That was not my take on the question, but the ADC reference is a good one.

I guess we will not know until he/she responds.

ftguy2016

I see...I understand that the servo headers have the resistors but the breadboard pins no (I was not sure if the previous thread did also apply to the activity board or was simply generic about the chip only).

Thank you all for your prompt reply.