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Seeeduino V4.2 is an Arduino-compatible board, which is based on ATmega328P MCU, Arduino UNO bootloader, and with an ATmega16U2 as a UART-to-USB converter. The three on-board Grove interface can make your board connect to over 300 Grove modules.
The Arduino Nano is equipped with 30 male I/O headers, in a DIP-30-like configuration, which can be programmed using the Arduino Software integrated development environment (IDE), which is common to all Arduino boards and running both online and offline. The board can be powered through a type-B mini-USB cable or from a 9 V battery. [2]
BBFuino come with the ATmega328 controller, loaded with Optiboot (Arduino UNO's bootloader), compatible with Arduino IDE and sample code, design to fit breadboard for prototyping and learning, lower down the cost by taking out the USB to UART IC, so the board has the basic component to operate.
For users who still need RS-232 serial ports, external USB-to-UART bridges are now commonly used. They combine the hardware cables and a chip to do the USB and UART conversion. Cypress Semiconductor and FTDI are two of the significant commercial suppliers of these chips. [6]
Though 3rd-party boards have similar board names it doesn't automatically mean they are 100% identical to official Arduino boards. 3rd-party boards often have a different voltage regulator / different USB-to-UART chip / different color solder mask, and some have a different USB connector or additional features, too. [11]
The IOIO has been variously described as a "geek's paradise", "an easy way to get I/O from an Android device’s USB connection" and "a USB I/O breakout board for Android smartphones which turns your handset into a super-Arduino of sorts". [18] [29] [30] [31] It featured as a recommended "gift for geeks" in a Scientific Computing article. [25]
The Atmel-ICE and PICkit 4 are capable of programming UPDI chips. It is also possible to use an Arduino thanks to jtag2updi, [19] or a standard USB-UART adapter with the TX and RX pin shorted by a 1 kΩ resistor and the pymcuprog utility provided by Microchip. [20]
SparkFun ESP8266 Thing. The reason for the popularity of many of these boards over the earlier ESP-xx modules is the inclusion of an on-board USB-to-UART bridge (like the Silicon Labs' CP2102 or the WCH CH340G) and a Micro-USB connector, coupled with a 3.3-volt regulator to provide both power to the board and connectivity to the host (software development) computer – commonly referred to as ...