Using Ping Sensors With BS2-e
Sandgroper
Posts: 62
Hi all,
Could anyone tell me how many PING sensors can be run off a BS2-e chip?·
The data on the PING sensors states the supply current at 30 mA typical and 35 mA max.· I noticed that the BS2-e is rated at 30 mA per pin and 60 mA per 8 pins (source & sink).· Am I right in assuming that the BS2-e will handle 2 PINGs per bank (assuming no other current draw)?· What else·do I need to consider in order to protect the chip?·
Could anyone tell me how many PING sensors can be run off a BS2-e chip?·
The data on the PING sensors states the supply current at 30 mA typical and 35 mA max.· I noticed that the BS2-e is rated at 30 mA per pin and 60 mA per 8 pins (source & sink).· Am I right in assuming that the BS2-e will handle 2 PINGs per bank (assuming no other current draw)?· What else·do I need to consider in order to protect the chip?·
Comments
The Ping is drawing power from VDD instead of the stamp. So the 35mA draw will be coming from the on board regulator instead of the I/O pin. The signal line is what communicates with the Basic Stamp, and there should not be anything extra you will need to protect the I/O pins being used with your Ping Sensors.
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Joshua Donelson
www.parallax.com