The Uno R3 CP2102 ATmega328P Development Board is the low-cost version of the popular UNO R3 Arduino. Instead of ATmega16U2 processor, it is assembled with CP2102 IC. UNO is a microcontroller board based on the ATmega328P. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started.

Specifications of Raspberry Pi Pico:-

Model: Raspberry Pi PICO

Operating Voltage (VDC): 1.8 ~ 5.5

Processor: RP2040 (Dual-core Arm Cortex M0+) By Raspberry Pi

Interface: 2 x UART, 2 x I2C, 2 x SPI, up to 16 PWM channels

RAM: 264 KB

GPIO: 26 Pins: Clock Speed 133 MHz

On Board Ports: Micro-USB 5V/2.5A DC Power Input Port

Operating Temperature Range (C): -20 to 85

Dimensions (in mm) : 51 (L) X 21 (W) X 4 (H)

Features of Raspberry Pi Pico:-

1. RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom

2. Dual-core Arm Cortex M0+ processor, the flexible clock running up to 133 MHz

3. 264KB of SRAM, and 2MB of onboard Flash memory

4. The castellated module allows soldering directly to carrier boards

5. USB 1.1 with device and host support

6. Low-power sleep and dormant modes

7. Drag-and-drop programming using mass storage over USB

8. 26 multi-function GPIO pins

9. 2 SPI, 2 I2C, 2 UART, 3 12-bit ADC, 16 controllable PWM channels

10. Accurate clock and timer on-chip

11. Temperature sensor

12. Accelerated floating-point libraries on-chip

13. 8 Programmable I/O (PIO) state machines for custom peripheral support