Arduino Uno R3

Raspberry Pi 4

Adafruit Feather nRF52840 Sense

Arduino Mega 2560 Rev3

Cost

$ 23

$55

(For RAM = 4GB)

$37.50

$40.30

Processor Speed

16 MHz

1,500 MHz

64MHz

16 MHz

Language can be used

Arduino code is written in C++

It can’t use Python or Java

By Default:

• C/C++
• Python2 & 3
• Scratch

However, nearly any language compiler or interpreter can be installed on Raspbian OS.

C/C++

But can be programmed using:

Python

Java

Original:

C

C++

But can be programmed using:

Python

Java

Special Features

• 20 digital input/output pins.
• ATmega16U2 programmed

• It can activate a motor, turn on LEDs, or publish anything online.

• Dual micro HDMI ports
• The ability to output 4K video at 60 Hz
• Support for USB 3 and true Gigabit Ethernet

• Bluetooth Low Energy

• LED

• Reset button

Digital Pins

14 pins

28 GPIO (digital or analog pins)

12

54

Analog pins

6 pins

28 GPIO (digital or analog pins)

6

16

Memory

32 KB (ATmega328P) of which 0.5 KB used by bootloader

The Raspberry Pi 4 is currently available in 2GB, 4GB and 8GB variants.

 256KB SRAM

256 KB of which 8 KB used by bootloader

Weight

25 g

46g

 6 grams

37 g

Length

68.6 mm

30 mm

51mm

101.52 mm

Width

53.4 mm

85 mm

23mm

53.3 mm

Processor

Tmega328PA

Integrated with broadcom 2711, 64-bit quad-core Cortex-A72 processor.

ARM Cortex M4F

Link Page

https://www.raspberrypi.com/products/raspberry-pi-4-model-b/ 

https://learn.adafruit.com/adafruit-feather-sense/overview