

The ESP8266 WiFi module was presented at its introduction as a TTL "Serial to Internet" module. Handy to connect Arduino boards to the internet. It soon turned out that this ESP-01S module and its number of GPIO pins, outwardly carried, bigger brothers (ESP-7, ESP-12, NodeMCU etc.) can do much more than just supplement an Arduino. The processor is many times more powerful than the Atmel processor of the Arduino Uno and the memory is many times larger (1 MB!). The modules can be used as fully-fledged independent micro processors, with WiFi connectivity! "
Characteristics
Type: ESP-01S
- 2x4 2.54 mm header
- Built-in PCB-printed antenna
- 3 GPIOs: GPOI 0 / 2 / 16
- UART URXD / UTXD
- RESET en CH_PD (powerdown)
- Flash memory upgraded to 1MB
Reference: ARDBUZZER
Brand: Hytronic
The Keyes KY-012 Active Buzzer Module is compatible with Arduino, and produces a single-tone sound when the incoming signal is high.
Reference: ARDLCD1602
Brand: Hytronic
LCD1602 The 1602 LCD Keypad Shield is an affordable and easy way to add a simple 16 x 2 LCD screen and 5 button menu to your Arduino projects. The LCD Display uses the Liquid Crystal library that comes standard with the Arduino IDE
Reference: ARDRS232TTL
Brand: Hytronic
MCU mini RS232 MAX3232 level to TTL level converter board serial
ESP8266 ESP-01S WIFI MODULE