Arduino test code is run to see if the sensors are working properly, with built-in LED flashing when the sensor is triggered, ...

A nibble is a 4 bit element, which can hold a value 0..15 (0..F in HEX). It can be seen as an uint4_t type. The nibbleArray is an array that stores 2 nibbles in a byte therefore it is twice as small ...

CSV means comma separated values. It's like a normal "txt" file with commas at regular places to separate some values. Typically the first line of CSV file is a "header", containing names of columns ...

Ever wondered if a small, low-cost board like the ESP32-CAM can actually recognise objects or even identify Indian currency notes? In this project, the answer is a clear yes. We combine the ESP32-CAM ...