DIYables STEM V4 IoT Advanced Starter Kit, Arduino Uno R4 WiFi Compatible

The DIYables STEM V4 IoT Advanced Starter Kit is built around the DIYables STEM V4 IoT board, a WiFi and Bluetooth development board fully compatible with Arduino Uno R4 WiFi, so it programs in Arduino IDE with the same board setting, libraries, and shields. It pairs the board with a Proto Screw Shield V 1.0 expansion board, a half-size breadboard, three types of jumper wires, a USB Type-C cable, and DC power jacks for fast, organized prototyping. Inputs and sensors include an HC-SR04 ultrasonic sensor, HC-SR501 PIR motion sensor, DS18B20 temperature sensor, LDR light sensor module, potentiometer, button module, and 3x4 keypad.

Outputs include a 1602 LCD display with blue backlight, SG90 servo motor, 28BYJ-48 stepper motor with ULN2003 driver, 5V 1 channel relay, LED modules, and an active piezo buzzer. With online tutorials provided, the kit takes beginners, students, and classrooms from blinking LEDs to motion alarms, keypad locks, smart home automation, and WiFi IoT dashboards.