SPIDER Automation Adafruit Feather 328P Development Board | ATmega328P 3.3V @ 8MHz
Description
SPIDER Automation Adafruit Feather 328P Development Board combines nostalgic appreciation for the classic ATmega328P ‘Arduino’ chip with cutting-edge portable board design. Weighing just 4.8 grams and measuring exceptionally thin, the Feather ecosystem is built to be the new standard for portable microcontroller projects.
At the core of the Feather 328P is an ATmega328P microcontroller clocked at 8 MHz with 3.3V logic, matching the proven architecture of Pro Mini and Metro 328 boards. Equipped with 32KB of flash memory, 2KB of RAM, and a SiLabs CP2104 USB-to-serial converter, it ensures effortless code uploading and debugging while maintaining full compatibility with classic Arduino sketches. To support mobile and wearable creations, it includes built-in LiPo battery charging circuitry, automatic power switching, and a dedicated voltage divider for real-time battery monitoring.
Key Features
- ATmega328P Microcontroller: Classic 8-bit AVR RISC processor running at 8 MHz with stable 3.3V logic and power.
- Ultra-Lightweight Form Factor: Weighs a mere 4.8 grams with compact dimensions (51 × 23 × 8 mm) for maximum portability.
- SiLabs CP2104 USB Serial Converter: Provides reliable onboard USB-to-serial communication for bootloading and serial monitor debugging.
- Built-In LiPo Battery Charger: Integrated 100mA Lithium-polymer charger featuring a charging status indicator LED.
- Automatic Power Switching: Seamlessly switches between USB power and connected LiPo battery power sources.
- Battery Voltage Monitoring: Includes an internal voltage divider tied to an analog pin to track battery health and charge levels.
- Abundant I/O Pins: Offers 19 GPIO pins, 6 PWM channels, hardware I2C and SPI support, and 8 analog inputs.
- Onboard Prototyping Area: Features a tiny built-in soldering grid allowing you to wire simple sensors or buttons directly onto the board.
- Diagnostic & Status LEDs: Includes a red general-purpose pin #13 LED alongside dedicated RX and TX serial data indicators.
- Secure Mounting Options: Equipped with 4 structural mounting holes and an accessible hardware reset button.
Benefits
- Ultimate Portability: Feather-light design and integrated battery management make it ideal for wearable tech and mobile deployments.
- Classic Code Compatibility: Retains full support for standard Arduino libraries and sketches written for the ATmega328P architecture.
- Breadboard-Free Simplicity: Onboard prototyping space lets you solder small circuit additions directly without needing an external breadboard.
- Smart Power Control: Automatic USB-to-battery switching and voltage telemetry prevent unexpected power drops during operation.
- Robust Current Regulation: Onboard 3.3V regulator delivers up to 500mA peak current output to drive external sensors and peripherals.
Applications
- Wearable Technology: Lightweight microcontroller units embedded into smart garments, costumes, or portable accessories.
- Battery-Powered Remote Sensors: Autonomous IoT data loggers powered by Lithium-polymer batteries with live voltage tracking.
- Portable Prototyping: Compact field instruments, handheld gadgets, and wireless testing rigs.
- Smart Home Automation: Miniature wireless control nodes and localized trigger modules.
- Embedded Systems Education: Perfect platform for teaching AVR microcontroller programming, power management, and portable circuit design.
Package Includes
- 1 x Adafruit Feather 328P – ATmega328P 3.3V @ 8 MHz Development Board
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand / Series | SPIDER Automation / Adafruit Feather Series |
| Item Type | Portable Microcontroller Development Board |
| Model Order Code / SKU | Feather 328P / SKU-SPIDER-FEATHER-328P |
| Microcontroller IC | ATmega328P (8-Bit AVR RISC Architecture) |
| Processor Clock Speed | 8 MHz |
| Logic & Operating Voltage | 3.3V DC |
| Peak Current Output | 500 mA (Onboard 3.3V Regulator) |
| USB-to-Serial Converter | SiLabs CP2104 |
| Memory Configuration | 32 KB Flash, 2 KB RAM, 1 KB EEPROM |
| Digital I/O & PWM Pins | 19 GPIO Pins (Includes 6 PWM Channels) |
| Analog Inputs | 8 Analog Input Channels (2 Shared with I2C) |
| Battery Management | Built-In 3.7V LiPo Battery Charger (100mA) with Auto-Switching & Voltage Divider |
| Physical Dimensions | 51 mm × 23 mm × 8 mm |
| Board Weight | 4.8 g |
| Package Shipping Weight | 0.020 kg (20 g) |
| Package Shipping Dimensions | 5 cm × 3 cm × 1 cm |
