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sleep mode for soil watch 10

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aylashiv:
here the scenario is: the device will be monitored from remote places.here the source of current is battery. lets say: if i want to read for every 10 mins then only a second is enough to read from analog pin rest 599 seconds current consumption is wasted. how can i over come it

Thanks,
shiva kumar

pinolec:
Hi Shiva,

The easiest solution is to use a transistor as a switch to turn on and off the sensor. I assume you use a microcontroller to measure the values. Use 1 pin to control transistor to turn on the sensor.
Let me know if you need some more assistance with this.

 :)
Piotr

aylashiv:
Hi,

can you send me the schematic of how to drive the sensor using a transistor? for whenever we want to make it on and off.

pinolec:
Hi Shiva,

In general, you would like to use a transistor to switch load (sensor).

See attached picture.

You can use nearly any logic level n-channel MOSFET.

Regards,
Piotr

aylashiv:
Hi,

Thanks for the schematic diagram, im currentky using an NPN transistor to switch on and off the load, but I prefer MOSFET in future, just clarify me, MOSFET has good retention than a BJT?

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