Analog Capacitive Soil Moisture Sensor - Power consumption
Account cancelled 2016-12-28 03:50:06 3172 Views1 Replies I got an "Analog Capacitive Soil Moisture Sensor V1.0" for a moisture monitoring project.
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The site states its operating current is "less than 1mA". I connected the analog signal to A0 of a Arduino Pro Mini 3.3V, GND to GND and VCC to VCC (3.3V). Then I ran the example code provided by the website, but the power consumption of the sensor turned out to be 5mA. (I measured directly at the VCC of the sensor, so no other components influenced the measurement)
Is there a problem with the sensor, with the specification or with the measurement technique?
The analog readings within the Arduino seem to by fine by the way. I'm just concerned about the "high" power consumption...
Best regards,
Mike
make_clickable_callback(MAGIC_URL_FULL, '(', 'https://www.dfrobot.com/wiki/index.php/Capacitive_Soil_Moisture_Sensor_SKU:SEN0193', '', ' class="postlink"'))
The site states its operating current is "less than 1mA". I connected the analog signal to A0 of a Arduino Pro Mini 3.3V, GND to GND and VCC to VCC (3.3V). Then I ran the example code provided by the website, but the power consumption of the sensor turned out to be 5mA. (I measured directly at the VCC of the sensor, so no other components influenced the measurement)
Is there a problem with the sensor, with the specification or with the measurement technique?
The analog readings within the Arduino seem to by fine by the way. I'm just concerned about the "high" power consumption...
Best regards,
Mike
2016-12-28 13:44:14 Hi Mike,
I did a test and find that the operating current is 5mA indeed. So you are right, its our fault. Thanks for your confirmation!
I have modified the wiki. Wendy.Hu
I did a test and find that the operating current is 5mA indeed. So you are right, its our fault. Thanks for your confirmation!
I have modified the wiki. Wendy.Hu 