Description
NuttyFi 2.0 is an advanced Wi‑Fi IoT development board built around the ESP8266 (ESP‑12E/F) module. It’s designed to help you prototype, research, and ship production‑ready connected products—from automation and sensing to dashboards and data logging. Program it with the Arduino IDE or your preferred toolchain and deploy quickly.
Core idea: a compact, open, Arduino‑like, USB‑powered Wi‑Fi/serial transceiver board that lets you monitor, manage, and control devices from anywhere.
To install the NuttyFi IoT Board in Arduino IDE, follow below step-by-step guide:
Boards Manager URL (Arduino IDE → Preferences → Additional URLs):
Board Manager URL (copy this)
https://raw.githubusercontent.com/itsbhupendrasingh/Nuttyfi/main/package/package_nuttyfi_index.json
Tip: Arduino IDE supports multiple Additional URLs. Put each on a new line (IDE 2.x) or separate with commas (IDE 1.8.x).
Highlights
- Open‑source hardware package & examples
- Arduino‑like experience: sketch → upload → run
- USB for power + programming
- Reset/Flash buttons for easy boot modes
- Status LED for quick diagnostics
- Low cost, compact form factor
- Flexible I/O: GPIO, ADC, I²C, SPI, UART
- On‑board USB‑to‑UART (CP2102/CH340 as populated)
- Inbuilt Wi‑Fi (802.11 b/g/n) with integrated RF front‑end
What’s new in 2.0 (suggested list — edit to match your PCB):
- Refined power path & ESD/TVS protection
- Sturdier USB connector
- Clearer pin labels and safer defaults on boot‑critical pins
- Optional auto‑reset/auto‑program wiring
- Example pack aligned to Arduino IDE “Examples” menu
Technical Specs
| Item | Spec |
|---|---|
| Microcontroller | Tensilica Xtensa® LX106 (32‑bit RISC) |
| Module | ESP8266 (ESP‑12E/F) |
| Operating Voltage | 3.3 V |
| Recommended Input | 5 V via USB; VIN 7–12 V if populated (see Power Options) |
| Digital I/O (GPIO) | up to 9 usable pins (see Pin Map/Notes) |
| Analog Input (ADC) | 1 channel (0–1.0 V on ESP‑12E/F; 0–3.3 V if board includes divider — check PCB) |
| UART / SPI / I²C | 1x UART, 1x SPI, 1x I²C (bit‑bang/I²C on GPIO) |
| Flash | 4 MB typical |
| SRAM | ~64 KB |
| Clock | 80 MHz (160 MHz optional) |
| Wi‑Fi | IEEE 802.11 b/g/n; WEP/WPA/WPA2, open |
| RF | Integrated TR switch, balun, LNA, PA & matching |
Current draw (typical, module‑level): deep‑sleep ~20–80 µA; idle 15–20 mA; TX peaks can exceed 250–300 mA. Size your 3.3 V rail accordingly.
Power Options
Choose those that exist on your PCB (edit to match):
- USB 5 V (Micro‑B) → on‑board 3.3 V LDO. Ideal for development & uploads.
- VIN 7–12 V (5V pin) → on‑board regulator to 3.3 V. (Populate and heatsink as needed.)
Important: Provide at least 600 mA burst capacity on 3.3 V to avoid brown‑outs during Wi‑Fi TX. Keep antenna area clear of ground copper/enclosures.
Pin Map & Boot Notes (ESP‑12E/F)
| Board Label* | ESP8266 GPIO | Boot/Notes |
| D0 | GPIO16 | No interrupt; can wake from deep sleep → RST |
| D1 | GPIO5 | I²C/SCL (typical) |
| D2 | GPIO4 | I²C/SDA (typical) |
| D3 | GPIO0 | Boot strap (must be pulled‑up for normal boot). Use with care. |
| D4 | GPIO2 | Boot strap (pull‑up). Often wired to LED (active‑LOW). |
| D5 | GPIO14 | SPI SCK (default) |
| D6 | GPIO12 | SPI MISO (default) |
| D7 | GPIO13 | SPI MOSI (default) |
| D8 | GPIO15 | Boot strap (pull‑down). Don’t pull‑up at reset. |
| RX | GPIO3/RXD0 | Serial RX |
| TX | GPIO1/TXD0 | Serial TX |
| A0 | ADC0 | 0–1.0 V (or 0–3.3 V if divider present) |
*Labels vary by board; confirm with NuttyFi 2.0 silkscreen/schematic.
Boot mode recap:
- Normal run: GPIO0=HIGH, GPIO2=HIGH, GPIO15=LOW
- Flash mode: GPIO0=LOW (hold FLASH button) then reset
Buttons & Indicators
- RESET: hardware reset to reboot the module
- FLASH/BOOT: pull GPIO0 low for programming mode
- STATUS LED: usually on GPIO2, active‑LOW (confirm board wiring)
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