Im using my Netduino Plus to measure temperature values every second from a thermistor and display them on the output console in Visual Studios, when a hook up my LCD shield (5 volts) via I2C on top of the board my values drop to nearly half. Any advice/solution would be much helpful.
Thanks!!
adafruit LCD shield I2C
Started by GlenEE, Nov 09 2012 05:27 AM
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Posted 09 November 2012 - 11:43 AM
Glen,Im using my Netduino Plus to measure temperature values every second from a thermistor and display them on the output console in Visual Studios, when a hook up my LCD shield (5 volts) via I2C on top of the board my values drop to nearly half. Any advice/solution would be much helpful.
Thanks!!
How are you powering the Netduino +, from the USB or the barrel connector?
If you are using the USB, you maybe loading it to where the voltage is dropping to much (depending on power supply). May want to try 9vdc to barrel connector (check polarity is correct before plugging in the adapter).
Also check solder joints on the LCD shield to make sure that there are no unwanted inter-connections between pins.
Is the regulator chip get hot? If so that may indicate overloaded regulator.
If you have an ampmeter you may be able to power the shield with male-female jumpers to read the current draw of the shield.
Other than that it is difficult to help without a clear picture or information on the setup.
Hope this helps,
Chuck
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