![]() ![]() ![]() Full integration of microcontroller Atmel ATmega328 and IC Wi-Fi ESP8266 with 32 MB flash memory, and USB-TTL converter CH340G on one board. ![]() Shipping from Europe is however somewhat pricy with shipping adding 8 Euros to Spain, 9 Euros to other countries within Europe, and 11 to 13 Euros to the rest of the world. It is a customized version of the classic ARDUINO UNO R3 board. The price is not excessive, although not incredibly inexpensive with the Jolly module going for 12 Euros on a crowdfunding campaign on Kickstarter. The Jolly WiFi module offers a solution that’s neater and more compact than adding WiFi through an Arduino shield or module connected through jumper cables. Power Management – Voltage regulations to handle 5V for ATMega MCU and 3.3V for ESP8285.I/O headers compatible with ATMega328PB DIP-40 MCU.Communication interfaces between the two chips – SPI + UART (the latter exclusively for ESP8285 programming).Wireless chip – Espressif Systems ESP8285H16 WiFi SoC with 2MB integrated flash plus ceramic antenna.MCU – Microchip ATMega328PB 8-bit AVR microcontroller with 32 KB ISP Flash, 1 KB EEPROM, 2 KB SRAM (Based on data from the datasheet).Since ESP8285 cannot provide all I/Os, notably analog inputs offered by ATmega328P, Gianluca combined it with the ATMega328PB microcontroller in a compact SMD package to offer firmware compatibility plus WiFi connectivity in the same DIP form factor. Released over 10 years ago, Arduino UNO is still the best-selling Arduino board, but lacking WiFi in the IoT era is not ideal, so Gianluca Martino, Arduino co-founder and working with the company until 2015, decided to design the Jolly DIP module based on ESP8285 WiFi chip that can replace the ATmega328P 8-bit AVR DIP-40 microcontroller. ![]()
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