Arduino Sunflower – an Electronic Sundancer




Maker is always sensitive to the new and funny things. One day, I watched a video, in which the sunflower moves along with the sun. I had a sudden insight then. Why can’t I make a electronic device inmitating this biomechanism.

In the following days, I began to carry out my solar tracker project. I selected the crowtail as the microcontroller board, and picked up the componets and accessories in our warehouse. Then, I assembled these parts together. At last, I tested with the led on my phone. You know what, it worked perfectly.




I was so excited and posted the demo video on the social media. I was surprised that many people liked and shared this video, and some of them even sent me messages saying that they want to make this projects too.

So I redid this projects and make a specific tutorial to let more people make this project. Here we go.

(The code we used is referred to geobruce’s application: https://www.instructables.com/id/Arduino-Solar-Tracker, and we make adjustment for pan- tilt use.)

Step 1: Preparation

The materials we need is listed below.

Cardboard x 2

Foam board x 1

Stick x 1

3 pin crowtail cable x 6

Crowtail- Linear Potentiometer x 2

Crowtail- Light Sensor x 4

Crowtail- Pan- Tilt x 1

Crowduino With ATMega 328 V1.1 x 1

Crowtail- Base Shield for Arduino x 1

Step 2: Make the Head of the Device

Firstly, we need to cut the two cardboards as the pictures shows, just for half of cardboard. Then the pieces of cardboards can be assembled as a cross shape. At last, paste the stick with the cross, it will play a role as “head”, and always point to the sun. On the other hand, it can make the device beautiful and stable.

READ  Arduino Solar Cell Tester

Step 3: Install 4 Light Sensors

Piercing 4 suitable holes to install the 4 sensors, then dig one mid-hole to thread the stick. I numberd these sensors so that we can distinguish their different seat.

Step 4: Connect the Sensors With Cables

Use the glue gun to fix the stick to the foam, and then plug the cables into the sensors

Step 5: Fix the Stick to the Pan-tilt

We fix the stick to the pan-tilt. the seat of sensor should keep consistent with the picture. sensor “1“ and sensor ”2” located below site.

The pan-tilt is an assembled device with 9G servos. It can cotrol the vertical and horizontal rotation with 180 degrees.fix the the solar pannel on the foam

At last fix the the solar pannel on the foam. (Notice: the two solar pannels is just for decoration, without power supply function.)

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