Name: Seeed Studio XIAO ESP32C3 - Cost-effective tiny microcontroller with complete Wi-Fi subsystem and BLE, battery charge supported, power efficiency and rich Interface
SKU: 224553

Note

Since more and more Seeed Studio XIAO series have been launched, we have changed all Seeed Studio XIAO series product names. For further information, please refer to .

Feature

Outstanding RF Performance: Powerful ESP32-C3 SoC and U.FL antenna provided that supports WiFi/Bluetooth connection over 100m.

Thumb-size Design: 21 x 17.5mm overall dimension, fully compatible with all Seeed Studio XIAO series' expansion accessories.

Low Power Consumption: Lowest as 44 μA (deep sleep mode), with total 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, which can be easily integrated into other boards and Seeed provides for rapid production.

Description

Behold, here is a new member to the Seeed Studio XIAO series, like a Thumbelina carrying a complete Wi-Fi system along with Bluetooth Low Energy function - the Seeed Studio XIAO ESP32C3 has launched!

XIAO ESP32C3 has equipped a highly-integrated ESP32-C3 chip, built around RISC-V single-core 32-bit chip processor with a four-stage pipeline that operates at up to 160 MHz. Remaining the Seeed Studio XIAO series classic form-factor of small and exquisite, it offers 2.4GHz Wi-Fi and BLE(Bluetooth Low Energy) wireless capabilities to the developers. With the addition of ultra-low-power cost and charging ability, it provides a perfect solution for various IoT controlling scenarios and complex carriable applications.

As you may see, the board equips highly-integrated ESP32-C3 SoC. The chip has been installed with a complete 2.4GHz Wi-Fi subsystem which means it supports Station mode, SoftAP mode, SoftAP & Station mode, and promiscuous mode for multiple Wi-Fi applications. It works under an ultra low power state, also supporting features of Bluetooth 5 and Bluetooth mesh. There are 400 KB SRAM & 4 MB Flash on the chip, allowing for more programming space, and bringing more possibilities to the IoT control scenarios.

Being a number to the Seeed Studio XIAO family, the board deservedly maintains the classic thumb-sized form-factor design and elegant single-sided components mounting. Meanwhile, it has equipped with a battery charge chip and integrated circuit for enhancing its ability to carry. 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 4 analog i/o that can be used as ADC pins. It supports UART, IIC, and SPI serial communication ports, also including IIS (Internet Information Services). Utilizing its small and exquisite hardware design and the powerful onboard chip, programming by Arduino, it will offer more ability to wearable and portable devices or other applications.

Specification

Item	Seeed Studio XIAO ESP32C3
Processor	ESP32-C3 SoC
Processor	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
Wireless	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
Interface	1x Reset button, 1x Boot button
Dimensions	21 x 17.5mm
Power	Circuit operating voltage:
	Charging current: 50mA/100mA
	Input voltage (VIN): 5V
Wi-Fi Enabled Power Consumption	Active Model: 74.7 mA
	Modem-sleep Model: 24.4 mA
	Light-sleep Model: 3.6 mA
BLE Enabled Power Consumption	Modem-sleep Model: 26.8 mA
BLE Enabled Power Consumption	Light-sleep Model: 9.7 mA

Seeed Studio XIAO Series Comparison

Application

Internet of Things
Wearable devices
Health monitoring
Smart Agriculture
Low-Power(LP) networking

Application 1: Smart Private Garage

Materials: XIAO ESP32C3 *2, *1, *1

Difficulty: Simple

Description:

This is a peer-to-peer WiFi communication application, since two XIAOs detect each other via Wifi, the garage door will open or keep opening, and vice versa.

We could design a smart private garage that could open the garage door automatically when your car is nearing home and close the door when the car leaves far away. So, we could make one XIAO as a door controller with WiFi always-on. Another XIAO works as a key in your car. The key XIAO could be supplied by a battery and set to sleep mode which can save energy greatly.

Improvement:

It is nice to add an to measure the car-to-door distance and an screen to check the status of the garage. If you want an onboard voice sensor to command the door to open with vocal instruction, try our .

Application 2: Remote Forest Tracker

Materials: XIAO ESP32C3 *1, *1, *1

Difficulty: Normal

Description:

Thanks to the tiny size of the XIAO series, it is suitable to make the wearable devices, such as a small pet tracker. Here we combine XIAO, LoRa E5 and GPS as a tracker. This wearable device can be used as a simple GPS-Tracker which will lock its current location and publish other data via LoRa.

Improvement:

A that shows direction and distance is a great added value to the tracker that you could consider. Meanwhile, publishing , , or other parameters could bring more scenarios to this tracker. Besides, the chip ESP32-C3 allows this tracker to communicate over WiFi or BLE, and therefore, we can upload the tracker’s data or realize LoRa-to-MQTT bridge as well.

Hardware Overview

Pin out overview

Component overview

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