OUR EXPERT
Les Pounder is associate editor at Tom’s Hardware and a freelance maker for hire. He blogs about his adventures and projects at bigl.es.
YOU NEED
>Pimoroni 4 Letter pHAT
>HC-SR04P
>DS18B20
>4.7K Ohm resistor
>Breadboard
>Four-pin screw terminal
>Pimoroni Hacker HAT
>5x M2F jumper wires
>2x M2M jumper wires
>Code: https:// github.com/ lesp/LXF-Four-Letter-Sensors/ archive/ refs/ heads/ main.zip OUR EXPERT YOU NEED
T he Raspberry Pi is blessed with a plethora of sensors, but there are two that sum up how easy it is to work with them on the Pi. Ultrasonic sensors measure distances using a pulse of sound. A little science and maths can give us fairly accurate distances, enabling our robots to “see” the world, and providing contactless user interfaces for projects. Temperature sensors, such as the DHT11, DHT22
