Author Topic: Max Sensor Power Consumption  (Read 283 times)

rvdvoort

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Max Sensor Power Consumption
« on: February 20, 2017, 03:22:33 pm »
What is the max power I can draw from a Mcmodule 110 "high" digital pin when the sensor is connected to external battery of 3.3 - 3.5 V. The sensor I have in mind would pull a max 15mA when in use.

Thx,
Rvdvoort

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mc-Josh

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Re: Max Sensor Power Consumption
« Reply #1 on: February 21, 2017, 11:46:07 am »
The maximum power that can be drawn from an I/O pin is 5mA for the mcMod110.

rvdvoort

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Re: Max Sensor Power Consumption
« Reply #2 on: February 21, 2017, 03:49:42 pm »
Thanks for the feeback but 5 ma is not enough. I might be able to go below 10 ma (around 8 ma)

Would it be possible to use 2 or 3 pins of the Mcmodule 110 in parallel to support the max of 10 ma. Would need this power only for a couple of seconds befor switching the sensor Off.

mc-Josh

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Re: Max Sensor Power Consumption
« Reply #3 on: February 21, 2017, 04:31:57 pm »
You may be able to use 3 pins in parallel, the maximum recommended draw for the microcontroller is 5mA per pin to a total of 15mA for the entire device.
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kristofferis

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Re: Max Sensor Power Consumption
« Reply #4 on: February 22, 2017, 09:04:07 am »
Is it the same recommendation for mcModule 120?

mc-Josh

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Re: Max Sensor Power Consumption
« Reply #5 on: February 22, 2017, 09:58:21 am »
The mcModule120 uses a different microcontroller which current allows up to 4mA per pin but the microcontroller does have a high drive capability which allows up to 15mA per pin. We are looking at adding a new Pinmode in a future version which will allow the pin to be set to this higher drive mode. Is this something that you are immediately interested in?
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kristofferis

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Re: Max Sensor Power Consumption
« Reply #6 on: February 22, 2017, 02:34:56 pm »
Thanks for the reply, this is not something that I immediately need but definitely a good feature and it is great that it will be added.