Seeed Studio XIAO ESP32C3 featuring ESP32C3 carries a complete Wi-Fi system along with Bluetooth Low Energy function. With its exquisite design and WiFi+BT ability, it's perfect for various IoT controlling scenarios and complex carriable applications . Feature Outstanding RF performance: PowerfulESP32-C3 SoCandU.FL antenna provided that supports WiFi/Bluetoothconnectionover 100m. Thumb-size Design: 21 x 17.5mm overall dimension, portable andlightweight. Low power consumption: Lowest as 44A(deep sleep mode), with 4 working modes available. Onboard battery charge IC: Supports battery charging,great for various wearable scenarios and wireless IoT applications. Ready for productization: Single-sided components design, easily integrated into other boards and Seeed provides Fusion Service for rapid production. Description Seeed Studio XIAO ESP32C3 has equippedahighly-integrated ESP32-C3 chip , built around a 32-bit RISC-V chip processor with a four-stage pipeline that operates at up to 160 MHz. The board equips highly-integrated ESP32-C3 SoC. The chip has been installed with a complete 2.4GHz Wi-Fi subsystem which means itsupportsStation mode, SoftAP mode, SoftAP &Stationmode, and promiscuous modefor multiple Wi-Fi applications. It works underan ultra-low power state , alsosupporting features of Bluetooth 5 and Bluetooth mesh . There are 400 KB SRAM & 4 MB Flash on the chip, allowing for moreprogrammingspace, and bringing more possibilitiestotheIoT control scenarios. Being a number to theSeeed Studio XIAO family, the board deservedlymaintains the classic thumb-sized form-factor design and elegant productization of single-sided components mounting . Meanwhile, it has equippedwitha battery charge chip and integratedcircuitfor enhancing its abilitytocarry.This board comes included with an external antenna to increase the signal strength for wireless applications. There are 11 digital I/O that can be used as PWM pins and 4analog i/o that can be used as ADC pins. It supports UART, IIC, and SPI serial communicationports, alsoincluding IIS (Internet Information Services). Utilizing its small and exquisitehardware design and the powerful onboard chip, programming by Arduino, it will offer more abilitytowearableand portabledevices orother applications. To provide a more smoothed learning experience for beginners, we have prepared a free course based on the Starter Kit for Seeed Xiao which contains 4 Units and 16 lessons to help you quickly get started with development boards, and then you can proceed to realize little and individual fun projects. You can have access to the Seeed Studio Grove ecosystem by connecting it to the compatible Seeed Studio XIAO expansion board . We have developed more than 400 Grove modules , covering a wide range of applications that can fulfill various needs. Get started and explore the infinite possibilities of the Seeed Studio XIAO series! If you are interested in programming embedded machine learning, we have Codecraft visual programming that can help you quickly start your own TinyML project. And we have set up a #tinyml channel on our Discord server, please click to join for 24/7 making, sharing, discussing, and helping each other out. We already have 5 XIAO products based on different solutions in the XIAO family, to help you better understand the differences and choose the most suitable part for your projects, please refer to the Seeed Studio XIAO Series Page . Attention It will be a little hard to connect the antenna at the first time using the board. Please connect the antenna at the vertical direction and do not drag at the horizontal direction. Specification Parameter Description Processor ESP32-C3 SoC RISC-V single-core 32-bit chip processor with a four-stage pipeline that operates at up to 160 MHz Wireless Complete 2.4GHz Wi-Fi subsystem Bluetooth 5.0/ Bluetooth mesh On-chip Memory 400KB SRAM & 4MB Flash Interface 1x UART, 1x IIC, 1x IIS, 1x SPI, 11x GPIO(PWM), 4x ADC 1x Reset button, 1x Boot button Dimensions