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Description
WiFi Kit 8 is a classic IoT dev-board designed & produced by Heltec Automation(TM), it’s a highly integrated product based on ESP8266 (Wi-Fi), Li-Po battery management system, 0.91″ OLED is also included. It’s the best choice for smart cities, smart farms, smart homes, and IoT makers.
Overview
- Microprocessor: ESP8266 ;
- Micro USB interface with a complete voltage regulator, ESD protection, short circuit protection, RF shielding, and other protection measures;
- 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);
- Onboard 2.4GHz (for Wi-Fi) PCB antenna;
- Onboard 0.91-inch 128*32 dot matrix OLED display, which can be used to display debugging information, battery power and other information;
- Integrated CP2104 USB to serial port chip, convenient for program downloading, debugging information printing;
- Compatible with the Arduino development environment.
Technical parameters:
| Resource | Parameter | |
| Master Chip | ESP8266 (160MHz Tensilica L06) | |
| Wireless Communication | Wi-Fi | |
| 802.11 n support (2.4 GHz), up to 72.2 Mbps | ||
| Hardware Resource | UART x 2; SPI x 1; I2C x 1; I2S x 1; 10-bits ADC inputx 1; GPIO x 11 | |
| FLASH | 4MB(64M-bits) SPI FLASH | |
| RAM | 520KB internal SRAM | |
| Interface | Micro USB x 1; 12 x 2.54 pin x 2 | |
| Maximum Size (Including protruding parts such as switch and battery compartment) |
50.9 x 18.2 x 8 mm | |
| USB to Serial Chip | CP2104 | |
| Battery | 3.7VLithium(SH1.25 x 2 socket) | |
| Solar Energy | x | |
| Battery Detection Circuit | x | |
| External Device Power Control（Vext） | x | |
| Display Size | 0.91-inch OLED | |
| Working Temperature | -40~80℃ | |
| Electrical Features | Condition | Minimum | Typica | Maximum |
| Power Supply | USB powered（≥500mA） | 4.7V | 5V | 6V |
| Lithium powered（≥250mA） | 3.3V | 3.7V | 4.2V | |
| 3.3V（pin）powered（≥150mA） | 2.7V | 3.3V | 3.5V | |
| 5V（pin）powered（≥500mA） | 4.7V | 5V | 6V | |
| Power Consumption(mA) | WIFI Scan | 115mA | ||
| WIFI AP | 135mA | |||
| Output | 3.3V pin output | 500mA | ||
| 5V pin output （USB powered only） | Equal to the input current |
Docs&Resource
- How to install “Heltec ESP Arduino” Development Environmentsupport@heltec.cn
- Heltec ESP8266 Series Source code
- Heltec ESP(ESP32 & ESP8266) framework (the basic of Heltec ESP series products Arduino running environment):https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series
- Heltec ESP8266 library (must work with Heltec ESP framework):https://github.com/HelTecAutomation/Heltec_ESP8266
- WiFi Kit 8 Pin out Diagram
- https://resource.heltec.cn/download/WiFi_Kit_8/WIFI_Kit_8_Pinout_Diagram.pdf
- WiFi Kit 8 Schematic Diagram
- https://resource.heltec.cn/download/WiFi_Kit_8/WIFI_Kit_8_Schematic_diagram.PDF
- Heltec ESP Arduino Porducts Difference Table (Product Selection Table)
- https://docs.heltec.cn/#/en/products/esp_arduino/heltec_esp_arduino_list_eu
- Frequently Asked Questions
- https://heltec-automation-docs.readthedocs.io/en/latest/esp8266+arduino/frequently_asked_questions.html
- AutoCAD Drawing
- AutoCAD 2017 version drawding:http://resource.heltec.cn/download/WiFi_Kit_8/kit8.dwg
- Interesting applications made by WiFI Kit 8
- WIFI Kit 8 dedicated 3D printing shell (thanks to Carl E. Mankinen):https://www.thingiverse.com/thing:3255436
- User test report: https://robotzero.one/heltec-wifi-kit-8/
- Arduino-based Camera Slider project using Blynk:https://community.blynk.cc/t/arduino-based-camera-slider-project-using-blynk/45366
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