Heltec
Heltec Wireless Stick Lite(V3) 902-928 Mhz
Pickup currently unavailable at 2251 NW 41st Street
HTIT-WSL is a development board for Wi-Fi, Bluetooth and LoRa. Because some customers do not need OLED screen when using WiFi Lora32, Heltec launched this product.
The HTIT-WSL is composed of an MCU (ESP32-S3FN8) and Semtech LoRa Transceivers (SX1262), which perfectly support Arduino®. Users can easily carry out secondary development and application. This supports Arduino® and can run the LoRaWAN protocol stably.
Main Features
- LoRa band 902-928 Mhz
- Microprocessor: ESP32-S3FN8 (Xtensa® 32-bit LX7 dual core processor, five stage pipeline rack Structure, main frequency up to 240MHz).
- SX1262 LoRa node chip.
- Type-C USB interface with a complete voltage regulator, ESD protection, short circuit protection, RF shielding, and other protection
- Onboard SH1.25-2 battery interface, integrated lithium battery management system (charge and discharge management, overcharge protection, battery power detection, USB / battery power automatic switching).
- Integrated WiFi, LoRa, Bluetooth three network connections, onboard Wi-Fi, Bluetooth dedicated 2.4GHz metal spring antenna, reserved IPEX (U.FL) interface for LoRa
- Integrated CP2102 USB to serial port chip, convenient for program downloading, debugging information printing.
- Support the Arduino development environment;
- With good RF circuit design and basic low-power design (sleep current ≤800uA), it is convenient for IoT application vendors to quickly verify solutions and deploy applications;
Specifications
| Parameters | Description |
|---|---|
| Master Chip | ESP32-S3FN8 (Xtensa®32-bit lx7 dual core processor) |
| LoRa Chipset | SX1262 |
| USB to Serial Chip | CP2102 |
| Frequency | 863~928MHz |
| Max. TX Power | 21d B ± 1d B |
| Max. Receiving sensitivity | -134dBm |
| Wi-Fi | 802.11 b/g/n, up to 150Mbps |
| Bluetooth LE | Bluetooth 5, Bluetooth mesh |
| Hardware Resource | 7*ADC1 + 9*ADC2; 8*Touch; 3*UART; 2*I2C; 2*SPI; etc. |
| Memory | 384KB ROM; 512KB SRAM; 16KB RTC SRAM; 8MB SiP Flash |
| Battery | 3.7V lithium battery power supply and charging |
| Operating temperature | -20 ~ 70 ℃ |
| Dimensions | 58.08 * 22.6* 8.2 mm |
| Interface | Type-C USB; 2*1.25 lithium battery interface; LoRa ANT(IPEX1.0); 2.4G ANT(IPEX1.0); 2*20*2.54 Header Pin |
Pin Map
Product Inclusion
- x1 - Heltec Wireless Stick Lite(V3) Pre-flashed with Meshtastic
- x1 - SMA Male Glue Rod Antenna
- x1 - IPEX to SMA Female Pigtail
- x1 - SH1.25×2 Battery Connector
- x2 - Pin Headers
Compared to Wireless Stick Lite (V2), V3 has made the following upgrades:
| Item | Wireless Stick Lite (V2) | Wireless Stick Lite (V3) |
|---|---|---|
| MCU | ESP32-D0 | ESP32-S3 |
| LoRa Node Chip | SX1276 | SX1262 |
| USB Socket | Micro USB | USB Type C |
| Crystal Oscillator | Ordinary crystal oscillator | High precision temperature compensated crystal oscillator |
| Low Power Features in Deep Sleep | 30uA | <10uA |
| Other Update | Better impedance matching of RF circuits. |
Documentation & Resources
- [Resource] — Heltec ESP(ESP32&ESP8266) framework
- [Resource] — Hardware Update Logs
- [Attachment] — Pin Map
- [Resource] — Downloadable Resources
RAK LILYGO Heltec & Developer Board Warranty Policy – Rokland
Dev board return policy
Development boards are specialty items that generally cannot be resold on return, especially if the firmware has been flashed. Defective boards can be replaced or returned for refund within 30 days of purchase. Non-defective boards can be returned in the same time frame if in like-new condition with a 20 percent restocking fee applied. If the board has had altered firmware or became bricked due to a non-standard firmware flash, the board may not be eligible for return.
Sales tax is required in many states and will be added at checkout if applicable to your delivery state. Tax exempt forms can be sent to our support department.
Shipping & Returns
We are in Florida and ship to: USA, Australia, Austria, Canada, France, Germany, Israel, Netherlands, the United Kingdom, and other countries (see full list in cart).
Local pickup available in Gainesville, FL
Expedited shipping orders placed before 3PM EST weekdays will ship that day. Standard shipping orders ship within 1 business day.
Sales tax: shipments shipped to states in which we are registered to collect tax will have appropriate tax added at checkout. Tax exempt forms can be sent to our support staff who can activate exemption status.
Lost packages and insurance
International Shipping:
Shipping options are visible in cart by using the shipping estimator. Transit times posted are estimates. International packages are subject to customs holds and duty payment may be required by your government on delivery. The cost of duty is not reimbursable. Internatonal shipping charges are not refundable in the event of a return.
Returns
See item description for product specific return policies, and return policies vary by item.
Bulk/High Value Order Returns
Due to the labor required to package and ship bulk orders, as well as cost and stock issues involved in replenishing items, bulk orders of 5 pieces or more are not returnable unless the equipment is defective or mis-advertised, or a return period is prenegotiated. For non-defective returns over $500, a restocking fee may be deducted from the refund to cover bank or card processing fees.
Backorder/Preorder
Items on backorder or preorder will ship as estimated on the item page. You can cancel an order any time up until shipment. Orders with expedited shipping will arrive in the advertised time after the order ships, not after the order is placed.
Cancellations
If you want to cancel an order, please email or call us at (352) 372-9902. If your item has not been shipped, we will cancel the order and provide a full refund.
Military and First Responder 
%20902-928%20Mhz){kind=link}