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LILYGO T-OI Plus ESP32-C3 RISC-V MCU Wireless Module

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Regular price $9.13 Sale price $8.82
3% OFF
SKU: LILYGO-Q369

📦 Location of the warehouse: China

Style: With BAT Holder
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Free Shipping from $50 in the US, $70 for non-continental US

- US Delivery Time: 2~7 Business days.

- Non-Continental US Delivery Time: 3~9 working days.

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Guarantee & Return Policy

Effective Date: September 16th, 2025

At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 30 days of the shipment date.

  

1. Warranty Disclaimer

Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.

  

2. Warranty Policy

Warranty Period

The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.

Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.

If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.

After the warranty period, support may still be available at a reasonable fee.

  

Warranty Exclusions

The warranty does not apply in the following cases:

  • The product is beyond the 12-month warranty period.
  • Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
  • Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
  • Unauthorized repair attempts by the customer.
  • The product is not defective but has been opened and is non-returnable by policy.

   

3. Returns & Refunds

If you're not satisfied with your purchase, you may be eligible for a return or exchange:

  • Return for Refund: Within 15 days of receipt (unopened).
  • Return for Replacement: Within 30 days of receipt (damaged or defective).
  • Exchange Window: Up to 30 days from receipt.

Please email us at info@openelab.com for a return authorization before sending anything back.

  

Return Conditions

  • Items must be in original, clean, and mint condition with packaging intact.
  • Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
  • Include the receipt, a brief note with your name, order number, and reason for return.

  

Shipping & Fees

  • Customers are responsible for return shipping to our warehouses in the US.
  • If a return is requested due to customer reasons (e.g., change of mind, incorrect order, etc.), both the original shipping cost and the return shipping cost will be deducted from the refund amount.
  • For returns due to customer reasons, we will generate and provide a return shipping label. 

   

Payment Platform Fees

For all refunds requested due to customer reasons, a standard service fee will be deducted from the refund amount, which is charged by the payment platforms. The specific fees are as follows:

Shopify Payments: 3.5% + $ 0.3

PayPal: 4.4% 
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- Pre-Ordering: If an item is unavailable, you can pre-order it. We'll dispatch once stock is replenished, usually within 10 working days. Special pre-sale products will specify the expected arrival time in the description.

- Express Shipping: Need it faster? Contact us via email or through our live chat support, and we'll arrange expedited delivery for you.

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LILYGO T-OI Plus ESP32-C3 RISC-V MCU Wireless Module-02

LILYGO T-OI Plus ESP32-C3 RISC-V MCU Wireless Module

The **LILYGO T-OI Plus** stands as a remarkably versatile and compact development board, powered by the **ESP32-C3 MCU**. This board is purpose-built for a diverse range of IoT projects, offering an optimal blend of performance and efficiency. At its core, the LILYGO T-OI Plus leverages the robust **RISC-V architecture**, delivering powerful wireless communication capabilities with integrated **Wi-Fi** and **Bluetooth 5.0 (BLE)**.

Designed for both beginners and experienced developers, this LILYGO board excels in low-cost, low-power applications. Its thoughtful design ensures ease of use and integration, making it an outstanding choice for anyone looking to craft custom IoT solutions. The LILYGO T-OI Plus seamlessly combines essential features with a compact form factor, making it suitable for a multitude of innovative endeavors.

Key Features

  • **Main MCU**: LILYGO ESP32-C3 (RISC-V 32-bit microprocessor)
  • **Wi-Fi Connectivity**: IEEE 802.11 b/g/n, supporting Station, SoftAP, and SoftAP+Station modes
  • **Bluetooth Capability**: LILYGO Bluetooth 5.0, with comprehensive Bluetooth mesh support
  • **Expandable Connectivity**: Compatible with Grove modules and MINI D1 expansion shields
  • **Memory**: 4MB Flash and 2MB PSRAM for ample application space
  • **Flexible Power**: Supports 16340 lithium battery holder for portability and USB power supply

Enhanced Functionality

  1. **Grove Connectors**: Features LILYGO compatible Grove interfaces for easy integration with various modules and MINI D1 Expansion Shields.
  2. **Battery Holder Option**: Provides an optional 16340 lithium battery holder, offering convenient power portability for mobile applications.
  3. **Compact Design**: Optimized for use in breadboard mode and adaptable for up-and-down expansion setups, maximizing design flexibility.

Technical Specifications

  • **MCU**: LILYGO ESP32-C3 (RISC-V 32-bit microprocessor)
  • **Clock Speed**: 1 MHz
  • **Analog Interfaces**: 2 x 12-bit SAR ADCs (up to 6 channels)
  • **Digital Interfaces**: 3x SPI, 2x UART, 1x I2C, 1 x I2S, LED PWM, Timers, RMT, Full-speed USB Serial
  • **Wi-Fi**: IEEE 802.11 b/g/n, supports Station, SoftAP + Station modes
  • **Bluetooth**: LILYGO Bluetooth 5.0 and Bluetooth mesh
  • **Grove Connectors**: 4-pin (2.0mm pitch)
  • **USB**: Type-C
  • **Power Supply**: 16340 lithium battery holder (optional), USB power supply (5V)

Ideal For

  • LILYGO IoT device development
  • Low-power LILYGO applications
  • LILYGO wireless communication solutions
  • LILYGO embedded system development
  • Custom LILYGO wireless sensors and devices

T-OI PLUS Introduction

Rich memory resources can meet the functional requirements of various common IoT products.

Continues the T-OI ESP8266 version appearance structure design.

1. With Grove Connectors:

-- Compatible with MINI D1 Expansion Shield

-- Compatible with Grove Interface Module.

2. With 16340 lithium Battery Holder

-- Chargeable Battery Holder

3. Added Without Battery Holder Options

-- Which is convenient for use in up-and-down expansion mode and breadboard mode.

Includes

With Battery Holder Option

  • 1 X T-OI plus ESP32-C3 (With Battery Holder)
  • 2 X Pins
LILYGO T-OI Plus ESP32-C3 RISC-V MCU Wireless Module

No Battery Holder Option

  • 1 X T-OI plus ESP32-C3 (Without Battery Holder)
  • 2 X Pins
LILYGO T-OI Plus ESP32-C3 RISC-V MCU Wireless Module

Technology Reference

T-OI-PLUS GitHub Repository

T-OI-PLUS Quick Start Guide

T-OI-PLUS Firmware

T-OI-PLUS Schematic

This LILYGO T-OI Plus ESP32-C3 module brings flexibility and ease of integration, making it an excellent choice for embedded systems and IoT solutions.

 1. General Shipping Information

  • We provide premium shipping methods with a tracking number for each order.
  • Shipping address should be input in English without any special symbols to help the courier company recognize your address in the system. We will ship according to the shipping address you provided. Please notify us of any address change before your order is marked "Shipped" to avoid parcel loss.
  • Please contact our customer service staff immediately if you need to cancel or change an order. Once your order has reached "Shipped" status, it can no longer be canceled or changed in any way. To avoid complications, please recheck your shopping cart before checkout.
  • We can ship all in-stock orders within 1 business day as your order has been confirmed.
  • All items are inspected before dispatch and are carefully hand-packed.
  • With standard courier practice, you need to check the contents of the parcel before signing for your goods. Otherwise, we will not be held responsible for any damage that may have occurred in transit.

 

2. Shipping Options for Orders Inside U.S.

(For Products in the U.S. Warehouse, Shenzhen Warehouse)

2.1 Shipping options for an order value under $5 inside the U.S.

Shipping Options:

Shipping Options Continental U.S. Non-Continental U.S.
USPS Ground Advantage

 $9.99 
Arrive in 3-7 Business Days		 $9.99 
Arrive in 5-9 Business Days
UPS Express

 $15.99 
Arrive in 2-4 Business Days		 $19.99 
Arrive in 3-7 Business Days

  

2.2 Shipping options for an order value between $5 and $50 inside the U.S.

Shipping Options:

Shipping Options Continental U.S. Non-Continental U.S.
USPS Ground Advantage

 $5.99 
Arrive in 3-7 Business Days		 $7.99 
Arrive in 5-9 Business Days
UPS Express

 $12.99 
Arrive in 2-4 Business Days		 $15.99 
Arrive in 3-7 Business Days

  

2.3 Free shipping options for an order value of above $50 inside the U.S.: 

Free Shipping Options Continental U.S. Non-Continental U.S.
USPS Ground Advantage

 Free above $50 Free above $70
UPS Express 

 + $ 9.99 for Above $50 + $ 12.99 for Above $50


Important Notice:

  • Before placing your order, please check the inventory location on the product page to confirm the delivery timeframes.
  • For products stored in the Shenzhen warehouse, we will ship them directly from Shenzhen, China.
  • If you place an order for products from both the U.S. warehouse and the Shenzhen warehouse, we will ship your order separately: the products from the Shenzhen warehouse will be sent from Shenzhen, and the products from the U.S. warehouse will be sent from the U.S. warehouse.

   

3. International Warehouse

Our products are stored in both our U.S. and Shenzhen warehouses to provide more flexible logistics solutions tailored to different regions and customer needs. On each product's description page, we indicate the specific warehouse location to help you better plan your purchase and delivery schedule.

3.1 U.S. Warehouse

For products stored in our warehouse in the U.S., we use either USPS or UPS for shipping, depending on the size of the package. Logistics within U.S. are very efficient, with an estimated delivery time of 3-7 business days, ensuring you receive your order quickly and conveniently.  

3.2 Chinese Warehouse

We will only arrange YunExpressexpress shipping from Shenzhen for orders with products in the Shenzhen warehouse worth more than €50. Orders directly shipped from our Shenzhen warehouse are handled by YunExpress. Given the complexities of international shipping, the estimated delivery time for these packages is around 10 business days, though this may vary slightly due to customs processes or other uncontrollable factors. Otherwise, the products will first be shipped from China to our U.S. warehouse and then shipped to the final destination. 

To ensure that your order is delivered within your desired timeframe, we recommend reviewing the warehouse information provided on the product pages before placing your order and selecting the appropriate shipping option. If you have any questions or need further assistance, please don't hesitate to contact our customer support team—we are here to help you!   

 

4. Customs and Taxes

4.1 How are customs handled by OpenELAB for import or export?

For shipments delivered to customers in the United States, OpenELAB will clearly declare the value of the goods on the customs form in compliance with U.S. Customs and Border Protection (CBP) requirements. Depending on the product value and origin, certain orders may be subject to import duties, taxes, or brokerage fees upon arrival, which are the responsibility of the recipient unless otherwise stated.
 We aim to minimize delays and ensure compliance, but OpenELAB does not guarantee exemption from U.S. customs charges.
  

4.2 Are U.S. sales taxes included when the Customer places an order?

OpenELAB collects U.S. state sales tax where legally required. The applicable rate depends on the shipping address and will be calculated at checkout.
 If no sales tax is charged at the time of purchase, you may still be responsible for use tax according to your state’s tax laws. OpenELAB is committed to complying with the U.S. Supreme Court's decision in South Dakota v. Wayfair, Inc. and applicable local regulations.
  

4.3 Are there any other fees besides tax?

Apart from sales tax, OpenELAB may charge shipping or handling fees, which will be clearly displayed before checkout.
 Please note that international shipments to the U.S. may occasionally incur customs clearance charges or carrier-imposed fees (e.g., by DHL, FedEx, or USPS). These charges are not controlled by OpenELAB and may vary based on the delivery carrier and U.S. import classification.


Effective Date: September 16th, 2025

At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 30 days of the shipment date.

  

1. Warranty Disclaimer

Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.

  

2. Warranty Policy

Warranty Period

The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.

Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.

If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.

After the warranty period, support may still be available at a reasonable fee.

  

Warranty Exclusions

The warranty does not apply in the following cases:

  • The product is beyond the 12-month warranty period.
  • Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
  • Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
  • Unauthorized repair attempts by the customer.
  • The product is not defective but has been opened and is non-returnable by policy.

   

3. Returns & Refunds

If you're not satisfied with your purchase, you may be eligible for a return or exchange:

  • Return for Refund: Within 15 days of receipt (unopened).
  • Return for Replacement: Within 30 days of receipt (damaged or defective).
  • Exchange Window: Up to 30 days from receipt.

Please email us at info@openelab.com for a return authorization before sending anything back.

  

Return Conditions

  • Items must be in original, clean, and mint condition with packaging intact.
  • Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
  • Include the receipt, a brief note with your name, order number, and reason for return.

  

Shipping & Fees

  • Customers are responsible for return shipping to our warehouses in the US.
  • If a return is requested due to customer reasons (e.g., change of mind, incorrect order, etc.), both the original shipping cost and the return shipping cost will be deducted from the refund amount.
  • For returns due to customer reasons, we will generate and provide a return shipping label. 

   

Payment Platform Fees

For all refunds requested due to customer reasons, a standard service fee will be deducted from the refund amount, which is charged by the payment platforms. The specific fees are as follows:

Shopify Payments: 3.5% + $ 0.3

PayPal: 4.4%