Can a £1/$1 Sensor Prevent a Car Crash?

Build a smart parking sensor with the BBC micro:bit and an ultrasonic sonar sensor in this practical STEM project. Learn how ultrasonic sensors measure distance using sound waves, how to connect the TRIG and ECHO pins to the micro:bit, and how to program the system in MakeCode using the Sonar extension. The project uses different warning tones that increase in speed as a toy car approaches an obstacle, culminating in a continuous alarm when a collision is imminent. Along the way, you’ll discover how distance sensing works, how to use variables, conditional logic, and loops in MakeCode, and how to mount the electronics onto a model car to create a realistic parking-assist system. Perfect for beginners, educators, and makers looking for a fun micro:bit coding project that combines programming, electronics, and real-world technology. There are links to the downloadable code and also links to purchase a micro:bit if you dont already have one. Get your micro:bit here: https://thepihut.com/products/micro-b... (UK) https://tinyurl.com/2tmuaet6 (UK) https://tinyurl.com/sydp44fv (US) https://tinyurl.com/4a5m5b58 (US) • 💾 Download HEX code (Google Drive): #microbit #Micro #edubit #code #coding #python #microprocessor #stem #interactive #learning #science #makecode #sensor #sonar #reversing #car #crash #ultrasonic #ultrasonicsensor