Arduino 101 for driving LCD diplays

Hello All,

could anyone help me, is this LCD driving tutorial ( directly applicable for Arduino 101 or should I perform some changes because of the different operating voltage (3.3 V) compared to Uno (5.5 V)?

Thanks in advance!

The arduino101 has a 5 v output:

The power pins are as follows:
VIN. The input voltage to the Arduino board when it's using an external power source (as opposed to 5 volts from the USB connection or other regulated power source). You can supply voltage through this pin, or if supplying voltage via the power jack, access it through this pin.
5V. This pin outputs a regulated 5V from the regulator on the board. The board can be supplied with power either from the DC power jack (7 - 12V), the USB connector (5V), or the VIN pin of the board (7-12V). Supplying voltage via the 5V or 3.3V pins bypasses the regulator, and can damage your board if it is not sufficiently regulated. We don't advise it.


I have used the 5v to drive an OLED wihtout proble, my read on this is that the borad can supply 5v via this pin, but the board should be supplied with 5v via this pin.

If you are still concerned, sparkfun has this product:

Basic 16x2 Character LCD - Black on Green 3.3V - LCD-09053 - SparkFun Electronics which is 3.3v

Good luck and let us know how it goes!


finally I managed it! I used mosfests for creating the 5V logical signal from the 3.3V logical output of the uC.

The uC outputs are wired to Gate through a resistance of 200 ohm,
Source legs are simply wired to ground,
Drain legs are connected to 5V through a resistance of 200 ohm. The measurement point (logical input for LCD) is between the Drain gate and the resistance.

If You do as above for RS, E, D7-D4, it works, but does a negation of all logical signals.

So what I additionally made that I put a negation in every digitalWrite command of the LiquidCristal.cpp library.

I am looking for a temperature controller based on arduino 101, which have a display of 8-10 inch where as a controller of 2 outputs if any one completed this type of project inform me.