ESP32-PICO-KIT V4.1 ESP32 Development Board WiFi Bluetooth Module For Arduino

ESP32-PICO-KIT V4.1 ESP32 Development Board WiFi Bluetooth Module For Arduino

This particular description covers ESP32-PICO-KIT V4 and V4.1. The difference is the upgraded USB-UART bridge from CP2102 in V4 with up to 1 Mbps transfer rates to CP2102N in V4.1 with up to 3 Mbps transfer rates.

Description:
ESP32-PICO-KIT is an ESP32-based mini development board.

The core of this board is ESP32-PICO-D4 - a System-in-Package (SiP) module with complete Wi-Fi and Bluetooth functionalities. Compared to other ESP32 modules, ESP32-PICO-D4 integrates the following peripheral components in one single package, which otherwise would need to be installed separately:
40 MHz crystal oscillator
4 MB flash
Filter capacitors
RF matching links

This setup reduces the costs of additional external components as well as the cost of assembly and testing and also increases the overall usability of the product.

The development board features a USB-UART Bridge circuit which allows developers to connect the board to a computer’s USB port for flashing and debugging.

All the IO signals and system power on ESP32-PICO-D4 are led out to two rows of 20 x 0.1" header pads on both sides of the development board for easy access. For compatibility with Dupont wires, 2 x 17 header pads are populated with two rows of male pin headers. The remaining 2 x 3 header pads beside the antenna are not populated. These pads may be populated later by the user if required.

Note:
1.The 2 x 3 pads not populated with pin headers are connected to the flash memory embedded in the ESP32-PICO-D4 SiP module. For more details see module’s datasheet in https://docs.espressif.com/projects/esp-idf/en/latest/hw-reference/get-started-pico-kit.html#related-documents
2.ESP32-PICO-KIT comes with male headers by default.

Functionality Overview:
The block diagram below shows the main components of ESP32-PICO-KIT and their interconnections.

ESP32-PICO-KIT block diagram


Functional Description:
The following figure and the table below describe the key components, interfaces, and controls of the ESP32-PICO-KIT board.

ESP32-PICO-KIT board layout


Below is the description of the items identified in the figure starting from the top left corner and going clockwise.


Power Supply Options:
There are three mutually exclusive ways to provide power to the board:
Micro USB port, default power supply
5V / GND header pins
3V3 / GND header pins

Warning:
The power supply must be provided using one and only one of the options above, otherwise the board and/or the power supply source can be damaged.

Pin Descriptions:
The two tables below provide the Name and Function of I/O header pins on both sides of the board, see ESP32-PICO-KIT board layout. The pin numbering and header names are the same as in the schematic given in Related Documents.






The following notes give more information about the items in the tables above.
1.This pin is connected to the flash pin of ESP32-PICO-D4.
2.32.768 kHz crystal oscillator: a) input b) output
3.This pin is connected to the pin of the USB bridge chip on the board.
4.The operating voltage of ESP32-PICO-KIT’s embedded SPI flash is 3.3V. Therefore, the strapping pin MTDI should hold bit zero during the module power-on reset. If connected, please make sure that this pin is not held up on reset.

Start Application Development:
Before powering up your ESP32-PICO-KIT, please make sure that the board is in good condition with no obvious signs of damage.
After that, proceed to ESP32 Hardware Reference, where Section Installation Step by Step will quickly help you set up the development environment and then flash an example project onto your board.



Package Included:
- 1 x ESP32-PICO-KIT V4.1 Development Board