Είμαι καθηγητής Πληροφορικής στην Δευτεροβάθμια και Πρωτοβάθμια Εκπαίδευση από το 2004. Από το 2013 υπηρετώ με θητεία στο Πειραματικό Δημοτικό Σχολείο Φλώρινας. Στην σελίδα μου θα βρείτε προτάσεις για την διδασκαλία της Πληροφορικής κυρίως σε μαθητές Δημοτικού.
This is a project my students implemented during the 2017-2018 evening club Young Hackers. It is a demanding project for elementary school students and it took us many meeting to accomplish. It contains a small 5V solar panel that can rotate in two axis so as to harvest maximum power from the sun. The project is based on the Dual Axis Solar Tracker Project from OpenSourceClassroom.
Students used their tinkercad accounts to design and test the schematics. Besides Arduino we used:
Two servo motors
For LDR sensors
A push button
Two led lights
Students worked in groups in a production line style to complete the tasks. (wire soldering, wire insulating, parts screwing etc.).
We wanted to implement two modes in the final product.
A manual mode – controlled by two pots.
An auto mode – controlled with four light sensors.
In order to achieve that we programmed the device to change between modes with the help of a push button. The programming was done in tinkercad.
Students presented their work in various festivals and exhibitions at the end of the school year.
An Arduino project implemented in the Robotics club “Young Hackers” in our school (Experimental Elementary School of Florina).
Bill of materials:
1 Arduino Uno
2 dc gear motors with wheels
1 L293D driver for controlling the motors
1 Infrared Obstacle Avoidance Sensor
1 Infrared Tracking sensor
2 battery cases and ΑΑΑ batteries
At first we used a pre-cut plexiglass frame for our vehicle. Later on our students designed and made their own frame using cardboard and a table tennis ball along with a 3d printed design (https://www.thingiverse.com/thing:1728714) as a castor wheel.
In order to connect the two motors to Arduino and the L293D driver we followed instructions students found on line and are depicted in the following image.
We connected the two motors to PWM pins in Arduino so as to control the speed (0-255 values) and not just their state (on-off).