Make your project dreams come true: an odometer for the hamster wheel, a fully automatic control of your ant farm with web interface, or the Sandwich-O-Mat – a machine that toasts and grills sandwiches of your choice.

With the Arduino and the DIY or Maker movement, not only did entry into microcontroller programming become child's play, but a second development also took place: Resourceful developers brought small boards – so-called shields or modules – to the market, which greatly simplified the use of additional hardware. The small modules contain all the important electronic parts to be connected to the microcontroller with a few plug-in cables, eliminating the need for a fiddly and time-consuming assembly on the plug-in board. In addition, it is also possible to handle tiny components that do not have any connecting legs (so-called SMDs).

Projects Discussed

1. Arduino seeks connection
2. BMP and introduction to libraries, I²C
3. Learn I/O basics with the multi-purpose shield
4. I²C LCD adapter and DOT matrix displays
5. LCD keypad shield
6. Level converter
7. W5100: Internet connection
8. I/O expansion shield
9. Relays and solid-state relays
10. The multi-function shield: A universal control unit
11. Connecting an SD card reader via SPI
12. Keys and 7-segment displays
13. 16-bit ADC
14. MCP4725 DAC
15. 16-way PWM servo driver
16. MP3 player
17. GPS data logger using an SD card
18. Touch sensor
19. Joystick
20. SHT31: Temperature and humidity
21. VEML6070 UV-A sensor
22. VL53L0X time-of-flight
23. Ultrasonic distance meter
24. MAX7219-based LED DOT matrix display
25. DS3231 RTC
26. Port expander MCP23017
27. 433 MHz radio
28. MPU-650 gyroscope
29. ADXL345 accelerometer
30. WS2812 RGB LEDs
31. Power supply
32. MQ-xx gas sensors
33. CO2 gas sensor
34. ACS712 current sensor
35. INA219 current sensor
36. L298 motor driver
37. MFRC522 RFID
38. 28BYJ-48 stepper motor
39. TMC2209 silent step stick
40. X9C10x digital potentiometer
41. ST7735 in a color TFT display
42. e-Paper display
43. Bluetooth
44. Geiger counter
45. SIM800L GSM module
46. I²C multiplexer
47. Controller Area Network