Wi-Fi Boards – Hamtech Electronics Technologies

Wemos D1 Mini

admin — Thu, 20 Nov 2025 19:51:22 +0000

The Wemos D1 Mini is a small Wi-Fi development board built around the ESP8266 microcontroller, offering full TCP/IP networking capabilities. It is breadboard-friendly and programmable via the Arduino IDE. Despite its small size, it provides multiple digital I/O pins, PWM, I²C, and SPI interfaces. It is ideal for IoT devices, smart home projects, Wi-Fi sensors, and automation systems. The board also supports deep sleep mode for low-power applications.

Key Features

ESP8266 microcontroller with 80 MHz CPU
Integrated Wi-Fi (802.11 b/g/n)
11 digital I/O pins, PWM, I²C, SPI
USB interface for programming and power
Breadboard-friendly compact form factor
Supports Arduino IDE and NodeMCU firmware
Deep sleep mode for low-power IoT applications

Variants

Wemos D1 Mini (standard)
Wemos D1 Mini Pro (with external antenna for longer range)

Specifications

Feature	Details
Microcontroller	ESP8266
Operating Voltage	3.3V
Input Voltage	5V via USB
Digital I/O Pins	11
Flash Memory	4 MB
Clock Speed	80 MHz
Wi-Fi	802.11 b/g/n
Dimensions	34 × 25 × 6 mm

Applications

IoT sensors and devices
Home automation systems
Wi-Fi-enabled robots and gadgets
Smart switches and relays
Wireless data logging

Compatible Boards / Circuits

Arduino IDE for ESP8266
Compatible with Wemos shields and accessories
Can interface with sensors, relays, and displays

Freenove ESP32-S3 CAM Board

admin — Thu, 13 Nov 2025 06:35:45 +0000

The Freenove ESP32-S3 CAM Board is an advanced AIoT development platform that combines the powerful ESP32-S3 dual-core Xtensa LX7 microcontroller with built-in Wi-Fi and Bluetooth 5.0 (LE) connectivity.

It features an integrated 2MP OV2640 camera, a microSD card slot for image and video storage, and a USB Type-C interface for easy programming and power. The board also supports AI acceleration instructions and TensorFlow Lite Micro, making it perfect for computer vision, image classification, motion detection, and streaming applications.

With GPIOs for sensor or peripheral expansion, the Freenove ESP32-S3 CAM board is ideal for developers building smart security cameras, IoT vision systems, face recognition devices, and edge AI prototypes.

Key Features:

Microcontroller: ESP32-S3, Dual-core Xtensa LX7 @ 240MHz
Wireless Connectivity:
- Wi-Fi 802.11 b/g/n
- Bluetooth 5.0 (LE)
Camera: OV2640 2MP camera module (included)
Memory: 8MB PSRAM, 16MB Flash
Storage: MicroSD card slot
USB Interface: USB Type-C (power + programming)
AI Support: TensorFlow Lite Micro and ESP-DL compatible
GPIO: Multiple pins exposed for sensors and external modules
Power Supply: 5V via USB-C or external 5V input
Operating Voltage: 3.3V logic level
Size: Compact PCB layout suitable for embedded projects

Applications:

Smart security and surveillance systems
AI vision and image recognition
IoT camera streaming and monitoring
Robotics and automation
Smart doorbell or visual access control systems
Edge AI and TensorFlow Lite applications

ESP32-CAM Wi-Fi + Camera Module OV2640 2MP

admin — Tue, 11 Nov 2025 19:44:32 +0000

The ESP32-CAM is a low-cost, high-performance development board that integrates an ESP32 WiFi/Bluetooth SoC and a 2-megapixel OV2640 camera. Designed for image processing and wireless video transmission, it supports WiFi 802.11b/g/n, Bluetooth/BLE, and operates as a completely standalone camera system without the need for external microcontrollers.

It comes with built-in microSD card support for image/video storage, GPIO pins for peripherals, and compatibility with Arduino IDE, ESP-IDF, and MicroPython. This module is ideal for DIY smart CCTV cameras, wireless security systems, face detection, object tracking, smart doorbells, robotics vision, and IoT telemetry.

ESP-32 Dev Module

admin — Thu, 06 Nov 2025 06:38:11 +0000

The ESP32 Development Module is a versatile microcontroller board based on the ESP32 SoC, designed for IoT and embedded applications. It features Wi-Fi and Bluetooth capabilities, making it ideal for smart devices, automation, and wireless communication projects. The module is widely used due to its low cost, low power consumption, and extensive peripheral support.

Key Features and Specifications

The ESP32 Dev Module includes a dual-core Xtensa 32-bit LX6 processor with a clock speed of up to 240 MHz. It supports 802.11 b/g/n Wi-Fi and Bluetooth 4.2 (Classic and BLE). The board typically comes with 4 MB of flash memory and 512 KB of SRAM, providing ample resources for most IoT applications.

It offers 40 GPIO pins, of which:

16 pins support analog input.
19 pins support PWM (Pulse Width Modulation).
16 pins can be used as external interrupts.

The module also includes DACs, ADCs, UART, SPI, I2C, and PWM interfaces, making it highly adaptable for various hardware integrations.