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HELTEC Mesh Node T114 V2 nRF52840 SX1262 GPS Meshtastic LoRaWAN 868Mhz
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HELTEC Mesh Node T114 V2 nRF52840 SX1262 GPS Meshtastic LoRaWAN 868Mhz
📡 The HELTEC Mesh Node T114 is a low-power consumption development board based on the nRF52840 and SX1262, supporting both LoRa and Bluetooth 5.0. Designed for versatility, it integrates various power interfaces (🔌 5V USB, 🔋 lithium battery, and ☀️ solar panel), an optional 1.14-inch TFT display, and GPS module support, providing powerful long-distance communication capabilities, excellent scalability, and a low-power design. This board is perfect for Meshtastic, LoRaWAN, and general IoT development.
🚀 Leverage the Heltec nRF52 development environment and libraries to quickly start your LoRa/LoRaWAN projects, or use it as a platform to run other open-source initiatives like Meshtastic.
🔧 Key Improvements in Rev2.0:
- 📶 Enhanced RF Performance: The PCB has been upgraded from 4 to 6 layers, providing a more complete ground plane for both the RF section and the crystal oscillator.
- ⚡ Improved Signal Integrity: The circuit now uses an immersion gold process, enhancing signal transmission.
- 📐 Optimized Layout: Component placement and RF path design have been optimized for the six-layer board structure.
- 📡 Reduced Interference: The direction of the 2.4GHz Bluetooth antenna and IPEX LoRa antenna interface has been adjusted to increase separation and minimize interference.
- 📨 Stable Long Data Packets: The high-frequency Mesh Node T114 can now reliably send long data packets in the "Long_Fast" channel of Meshtastic.
🌟 Main Features of HELTEC Mesh Node T114 V2
- 🔗 Dual Connectivity: MCU nRF52840 (Bluetooth), LoRa chipset SX1262.
- 🖥️ Optional Display: Powerful display function with an onboard 1.14-inch TFT-LCD display (135(H)RGB x240(V) dots, up to 262k colors).
- 🌙 Ultra-Low Power: Deep sleep mode consuming only 11 uA.
- 🌡️ Wide Operating Range: Suitable for environments from -20 ~ 70℃, 90%RH (Non-condensing).
- 🔌 Robust Interface: Type-C USB interface with voltage regulator, ESD protection, short circuit protection, and RF shielding.
- 🛠️ Arduino Compatibility: Compatible with the Arduino IDE; Heltec provides comprehensive development frameworks and libraries.
- 🔋 Flexible Power Options: 1.25*2P LiPo connector, 1.25*2P Solar panel connector.
- 📍 GNSS Ready: 1.25*8P GNSS module connector for GPS integration.
📊 Specifications of HELTEC Mesh Node T114 V2
| Parameters | Description |
|---|---|
| MCU | nRF52840 |
| LoRa Node Chip | SX1262 |
| Frequency | 470~510MHz; 863~870MHz; 902~928MHZ. |
| Max. TX Power | 21±1dBm |
| Max. Receiving sensitivity | -135dBm@SF12 BW=125KHz |
| Bluetooth | Bluetooth LE: Bluetooth 5, Bluetooth mesh |
| Hardware Resource | USB 2.0, 4 * SPI, 2 * TWI, 2 * UART, 4 * PWM, QPSI, 12S, PDM, QDEC Etc. |
| Memory | 1M ROM, 256KB SRAM |
| Interface | Type-C USB, 2*1.25 lithium battery connector, 2*1.25 solar panel connector, LoRa ANT (IPEX1.0), 8*1.25 GPS module connector, 2*13*2.54 Header Pin |
| Battery | 3~4.2V battery power supply and charge. |
| Operating Temperature | -20 ~ 70 ℃ |
| Dimensions | 50.80*22.86mm |
| Electrical characteristics | Deep Sleep: ~11uA; Tracker mode sleep: ~22uA; GPS OFF, TFT OFF: ~9mA; GPS OFF, TFT ON: ~20mA; GPS ON, TFT ON: ~51mA |
| Display | Onboard 1.14 inch TFT-LCD display |
✨ Highlights
-
🔌 Highly Extensible: Integrates multiple power interfaces: 5V USB, lithium battery, solar panel. Provides abundant pins and hardware resources.
-
🌙 Low Power Consumption: In Meshtastic low power consumption mode, the current is only 23uA. In LoRaWAN deep sleep mode, the current is only 11uA.
-
📡 Powerful Communication Capability: Supports LoRa and Bluetooth 5.0. Offers an optional 1.14-inch TFT display and GPS module.
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🛡️ Protective Design: A transparent plastic support platform is installed between the PCB and the monitor for component protection and heat dissipation.
📍 Pin Map
📐 Dimension
❓ FAQ
- 🔧 Can the onboard 2.4GHz antenna be replaced? The 2.4GHz antenna is a multilayer ceramic antenna for Bluetooth communications and cannot be replaced.
-
💻 What development methods does it support?
- 🛠️ Arduino
- ⚙️ PlatformIO
In addition to Meshtastic support, we have also developed a complete LoRaWAN protocol in the nRF52 Arduino framework.
- 🔌 What’s the battery socket type? You can find this type of socket by searching “SH1.25 x 2”.
- 🔋 What is the maximum size of battery supported by the default casing? The maximum capacity of the shell for carrying batteries is 42 × 28 × 11mm, and the default 3.7V lithium battery size is 40 × 25 × 10mm.
- 📲 How to enter Meshtastic on the screenless version of Mesh Node T114? Just download the screenless version firmware and enter the 123456 password.
- ☀️ What is the acceptable battery range for the solar panel connected to Mesh Node 114? 5V~6.5V, it is recommended to connect solar panels with a voltage of around 5V.
-
📨 Regarding the long chars send issue:
Not long ago, customers reported that some Mesh Node T114 devices running Meshtastic and sending long strings (>50 chars) ONLY in Long-Fast mode (SF11, 250K BW) may occasionally fail.
- 📎 For a detailed description of this matter, please refer to this link:
https://github.com/meshtastic/firmware/issues/4723#issuecomment-2369336696
- 📝 For a detailed report, Heltec solution, and compensation regarding this matter, please refer to this link:
https://github.com/meshtastic/firmware/issues/4723#issuecomment-2404889735
-
📡 Does 433MHz and 470MHz version have long chars sending issue?
After extensive testing, there is NO issue with long packet transmission in 433MHz and 470MHz versions, so they are not included in the compensation list.
🧪 In response to user demand for 433 and 470 hardware V2 versions, our engineers are debugging the corresponding hardware. It will be released soon.
📚 Resource
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📘 [Docs] — User Manual
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🧰 [Resource] — Heltec nRF52 framework and Lib
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🌐 [Resource] — SnapEmu IoT Platform
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📎 [Attachment] — V1.x Schematic diagram
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📎 [Attachment] — V2.x Schematic diagram
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📄 [Attachment] — Datasheet
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🖥️ [Attachment] — TFT-LCD Datasheet
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📦 [Resource] — Related Resources
📦 Packing List
The default packing list (without optional accessories) includes:
| 📦 Item | 🔢 Quantity |
|---|---|
| Mesh Node T114 | x1 |
| LoRa Antenna | x1 |
| 🔌 SH1.25×2 Battery Connector | x2 |
| 📍 2.54 *13 Header Pin | x2 |
| 📡 L76K GNSS (GPS) | x1 |
Projects
1. General Shipping Information
- We provide premium shipping methods with a tracking number for each order.
- Shipping addresses must be entered in English without special symbols to help the courier company recognize your address in the system. We will ship strictly according to the shipping address you provided. Please notify us of any address change before your order is marked "Shipped" to avoid parcel loss.
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- We can ship all in-stock orders within 1 business day after 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.
🚀 Need Faster Shipping?
If you require expedited shipping (Express), please contact our customer support team at info@openelab.io for a customized quote tailored to your location.
2. Shipping Rates & Options
Our shipping rates are calculated based on the order value and destination. Please refer to the tables below for details.
2.1 Germany (Domestic)
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| Deutsche Post | €0 - €50.00 | €4.95 | 2-4 Business Days |
| Deutsche Post | Over €50.00 | Free | 2-4 Business Days |
|
DHL Paket (Faster Delivery) |
€0 - €50.00 | €6.95 | 1-3 Business Days |
|
DHL Paket (Faster Delivery) |
€50.00 - €100.00 | €2.00 | 1-3 Business Days |
|
DHL Paket (Faster Delivery) |
Over €100.00 | Free | 1-3 Business Days |
2.2 European Union (EU)*
*Including:
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| Deutsche Post | €0 - €100.00 | €7.95 | 5-9 Business Days |
| Deutsche Post | Over €100.00 | Free | 5-9 Business Days |
|
DHL Paket (Faster Delivery) |
€0 - €100.00 | €15.95 | 3-7 Business Days |
|
DHL Paket (Faster Delivery) |
€100.00 - €250.00 | €7.95 | 3-7 Business Days |
|
DHL Paket (Faster Delivery) |
Over €250.00 | Free | 3-7 Business Days |
2.3 United States
| Region | Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|---|
|
Continental U.S. (50 States) |
USPS Ground Advantage | €0 - €45.00 | €5.95 | 3-7 Business Days |
| USPS Ground Advantage | Over €45.00 | Free | 3-7 Business Days | |
| USPS Priority Mail | €0 - €45.00 | €16.95 | 1-4 Business Days | |
| USPS Priority Mail | Over €45.00 | €14.95 | 1-4 Business Days | |
|
Non-Continental U.S. (AK, HI, PR, etc.) |
USPS Ground Advantage | €0 - €60.00 | €6.95 | 5-9 Business Days |
| USPS Ground Advantage | Over €60.00 | Free | 5-9 Business Days |
* The regions in the Non-Continental U.S. include: Alaska, American Samoa, Guam, Hawaii, the Marshall Islands, the Northern Mariana Islands, Palau, Puerto Rico, the U.S. Virgin Islands, and all U.S. Armed Forces addresses. The shipping and delivery to these areas are subject to the Non-Continental U.S. shipping rules.
2.4 International (Outside EU)
For specific international destinations, including Switzerland, United Kingdom, and Norway.
| Order Amount | Shipping Cost |
|---|---|
| €0 - €300.00 | €19.95 |
| Over €300.00 | Free |
Important Notice:
- Inventory Status: Please check the inventory status on the product page. Our system displays real-time stock for our Munich and Long Beach warehouses. If an item is out of stock in these locations, it will be marked as "Pre-order". You can still place an order for these items.
- Pre-order Fulfillment: For "Pre-order" items, we arrange the most efficient logistics solution to ensure you receive your goods as quickly as possible. Your package may be shipped directly from our Shenzhen warehouse. Alternatively, as part of our standard restocking process, we may transport the goods to our Munich or Long Beach warehouse first (typically taking 5-10 business days) before dispatching them to you.
- Split Shipments: If your order contains both in-stock and Pre-order items, we will prioritize shipping the in-stock items from the local warehouse immediately. The remaining Pre-order items will be sent to you in a separate shipment once they are ready.
3. International Warehouse
Our products are stored in our Munich, Long Beach, 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 German Warehouse
For products stored in our warehouse in Munich, we use either Deutsche Post or DHL for shipping, depending on the size of the package. Logistics within Germany are very efficient, with an estimated delivery time of 2-4 business days, ensuring you receive your order quickly and conveniently. For Western EU countries, the estimated delivery time is 4-6 business days. For Eastern EU countries, the estimated delivery time is 6-8 business days.
3.2 US Warehouse
For products stored in our warehouse in Long Beach, 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.
3.3 Chinese Warehouse
For Pre-order items or orders fulfilled directly from our Shenzhen warehouse, we utilize YunExpress for reliable international shipping. 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, products will be restocked to our Munich or US warehouses before final delivery, as detailed in the "Important Notice" above.
4. Customs and Taxes
4.1 How are customs handled by OpenELAB for import or export?
For EU Member States: Whether shipped from Germany or China, we cover all import duties and taxes (DDP), ensuring that you receive your package without any additional costs or hassle with customs.
For countries outside of the European Union, such as Switzerland and Norway, you may be subject to import duties, taxes, and/or customs fees charged upon delivery. These fees vary from country to country and are the sole responsibility of the recipient.
⚠️ Refusal of Delivery: If you refuse to pay these fees upon delivery and the package is returned to us, the refund amount will be calculated after deducting the original shipping costs, return shipping costs, and any applicable customs or storage fees.
4.2 How is VAT charged when the Customer places an order from OpenELAB?
In accordance with the newest VAT e-commerce rules in the EU, OpenELAB shall have the right to charge the amount of VAT at checkout. The standard rate of actual VAT applied is subject to the destination country's regulations. No additional VAT will be charged upon delivery for these orders.
