Robat - An educational BAT to demonstrate ultrasonic

cults3d

Robat is an educational project I made to demonstrate how ultrasonic navigation works for the bats. It reads the distance by using an ultrasonic sensor und displays the distance on a small display at the back of the bat. This project requires some arduino work and cheap electronics. I didn´t use printed wings on the example, I used sponge rubber instead to make it consume less space. However the 3D models of the wings and the wiring plan are included. Here the arduino code used: ------------------------------------------------------8<---------------------------- #include #include #define echoPin 8 #define trigPin 9 long duration; int distance; Adafruit_SSD1306 display(4); char message[]="Hello, I am Robat and I can show you how to orientate yourself with ultrasound. To do this, I generate a sound that cannot be heard by humans and wait until the echo comes back to me. My brain then quickly converts the time that the sound needs (1236 km / h) into the distance."; int x, minX; void setup(){ pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); Serial.begin(9600); display.begin(SSD1306_SWITCHCAPVCC, 0x3C); display.setTextSize(1); display.setTextColor(WHITE); display.setTextWrap(false); x = display.width(); minX = -12 * strlen(message); } void loop(){ digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); duration = pulseIn(echoPin, HIGH); distance = duration * 0.034 / 2; display.clearDisplay(); display.setCursor(0,0); display.setTextSize(2); display.print(distance); display.print(" cm"); display.setTextSize(1); display.setCursor(x,20); display.print(message); display.setCursor(x,28); display.display(); x=x-5; if(x < minX) x= display.width(); }