Power pins are used for either powering the pico from the power source or power the sensors and peripherals from the pico. The communication options this board has to offer are: GPIO0 to GPIO22 are digital only and GPIO 26-28 are able to be used either as digital GPIO or as an ADC input which can be done through software. The Raspberry Pi Pico’s GPIO is powered from the on-board 3.3V rail and is therefore fixed at 3.3V. The Raspberry Pi only utilises 26 out of 30 GPIOs the RP2040 has to offer, 26 pins are exposed and an additional 27th pin can only be used for the onboard LED. General Input and Output (GPIO) Pins on Pico: The below image taken from the official datasheet of Raspberry Pi Pico illustrates the layout of all the pins. Apart from these pins, it also has 3 pins for debugging. Raspberry Pi Pico has a total of 40 input and output pins out of which 26 are multipurpose GPIOs operating at 3.3V and 8 ground pins. It is actually an amazing board considering how affordable this board is, priced at just USD 4 ( around INR 300 in Indian market) it is competing directly against the likes of established Arduino boards, blowing them out of water in terms of power and speed when competed against the similarly priced modules. Unlike the other Pi boards which are basically a Linux based single board computer, Pico is a budget friendly microcontroller with 264kB multi-bank high-performance SRAM, 16 kb of on-chip cache, and 2MB of flash storage. It works at frequencies up to 133MHz and albeit looking powerless when compared to the other members of the Pi family it has a lot to offer. If not, then allow me to introduce you the microcontroller board, YES, you read it right, A Microcontroller!!! Pi Pico is the first microcontroller from the manufacturers of Raspberry Pi, based on the Raspberry Pi’s RP2040 microcontroller chip and working on ARM’s Dual-core cortex M0+ architecture. If you are into IoT, robotics, or automation, then there are good chances that you must have heard about the latest revelation from the Raspberry Pi foundation, i.e.
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