Introduction: Grove Lucky Dumpling

Picture of Grove Lucky Dumpling

LCD screen is the very first screen I tinkered with. It's fun, cheap, and most importantly well supported by the community(search LCD, and you will get a lot of libraries and example ready to use).

We have also a LCD display in Grove - Starter Kit. And better than mono color ones, the LCD in Grove - Starter Kit has RGB backlight!

This demo project features the 1602 LCD screen and functions as a lucky dumpling(fortune teller). When you press its button, it will give you a glimpse into your future.

Part list

All parts included can be found in Grove - Starter Kit by Seeed.

1. Grove - LCD RGB Backlight: 1602 LCD display with RGB backlight;

2. Base Shield: a conversion board for Grove to connect with Arduino/Seeeduino;

3. Grove - Button: a ubiquitous momentary button.


1. Grove - LCD RGB Backlight --> I2C port on Base Shield

2. Grove - Button --> port D4 on Base Shield

3. If you want it more portable, then a 9V battery is a great choice to add. Also a well decorated box would also be a delight.


Download the .ino file attached in this instructables and upload it to your Arduino/Seeeduino.


Scargill (author)2016-12-06

And if you have ESP-12 units lying around...

MWay888 (author)2016-08-10

Litliao, can I use this awesome project as a part of an educational resource I'm currently working on for teaching Arduino?

ecswong (author)2016-03-13

Thanks ! It's good sketch for a beginner like me to try.

Here is my start-kit

Welcome more ideas

thedod made it! (author)2014-06-13

Instead of the button I used the touch sensor, and instead of packing it in a box I used a "third arm" soldering post to hold the display and sensor, so it came out pretty hip.

I also changed the code: Instead of a "fortune teller" It's a "heart analyzer" that "can tell from your pulse" what you "feel" and what "about". This gives a 2-dimensional space of possible messages instead of a predefined set (specifically: 9*8 instead of 12).

Remark: I have an old board without the sda and scl sockets, so I had to patch them to A4 and A5 as explained here, and it worked.

Still - it's a mystery why it works fine when poser comes from USB (either PC of power supply), but as soon as I connect a battery (it's an old board where you have to change a jumper when you do that), I don't see text on the LCD (the backlight RGB changes work fine, though). Any idea why?

thedod (author)thedod2014-06-22

I've found out how to power the LCD from battery (can't do it with the Grove shield, though). I've documented this here.

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