Arduino Leonardo – Compatible
Highlights:
1. Microcontroller: ATmega32u4
2. Operating Voltage: 5V
3. Input Voltage (Recommended): 7-12V
4. Input Voltage (limits): 6-20V
5. Digital I/O Pins: 20
6. PWM Channels: 7
7. Analog Input Channels: 12
Arduino Mega 2560 – CH340 Compatible
Highlights:
1. 54 digital input / output terminals (14 of which have programmable PWM outputs).
2. 16 analog inputs.
3. 4 UARTs (hardware serial ports).
4. 16 MHz crystal clock.
5. Operating voltage: 6 ~ 12v.
6. Dimensions: 110 x 53 x 15 mm.
Arduino Nano CH340 – Compatible
Highlights:
1. Operating Voltage (logic level): 5V
2. 8 analog inputs ports: A0 ~ A7
3. 14 Digital input / output ports: TX, RX, D2 ~ D13
4. 1 pair of TTL level serial transceiver ports RX / TX
5. Using Atmel Atmega328P-AU MCU
6. Standard 0.1” spacing DIP (breadboard friendly).
Arduino UNO SMD CH340 – Compatible
Highlights:
1. Micro-controller : ATmega328.
2. Operating Voltage : 5V.
3. Input Voltage (recommended) : 7-12V.
4. Digital I/O Pins : 14 (of which 6 provide PWM output).
5. Analog Input Pins : 6.