NM-RF-Hat for Bruce CYD (CC1101/nRF24/PN532)

Meet the NM-RF-HAT Companion CYD — a powerful multi-band RF companion expansion board built for ESP32-2432S028 (CYD) and compatible ESP32-S3 development boards. It brings together CC1101 Sub-GHz. nRF24L01 2.4GHz. PN532 NFC. IR TX/RX. RF433 OOK. GNSS expansion. power management. and a TF card slot in one compact. cleanly integrated board. Designed for advanced makers. hardware enthusiasts. and portable signal-analysis builds. it reduces external wiring and helps keep your CYD setup stable and organized.

build Key Features:

• hub All-in-one expansion board — combines RF. NFC. IR. storage. GNSS expansion. and power-management functions into a single compact companion board
• settings_input_component Hardware RF Switch (DIP Switch) — allows hardware-level isolation between modules to reduce SPI bus conflicts. IO clashes. and unstable behavior
• settings_input_antenna CC1101 Sub-GHz module — dedicated 433MHz support for Sub-GHz testing. common RF analysis. and compatible low-frequency signal work
• sensors Integrated RF433 OOK TX/RX for simple 433MHz OOK signal send/receive workflows in supported projects
• wifi_tethering nRF24L01 2.4GHz module — supports compatible 2.4GHz wireless analysis and interaction in a compact onboard design
• contactless PN532 NFC — built-in 13.56MHz RFID / NFC support for read. write. and emulation tasks with compatible cards. tags. and test setups
• crop_free Dedicated rear NFC read area — optimized PCB antenna area for stronger and more reliable NFC card/tag coupling
• settings_remote Integrated IR TX/RX — ideal for infrared signal capture. replay. testing. and compatible remote-control experiments
• gps_fixed Dedicated GNSS header — ready for external GPS / GNSS module connection for location-based and field-use projects
• sd_card TF card slot plus extension support for storage-based functions and flexible data handling in supported firmware
• cable Simple assembly — designed for a clean stack-style setup with CYD. requiring only a minimal wire connection for installation
• battery_charging_full Built-in battery charging circuit. USB-C input. and BAT On/Off switch for portable-ready power design — battery not included
• developer_board Designed for ESP32-2432S028 (CYD) and compatible with ESP32-S3 boards. including support for Bruce firmware and similar ESP32-based projects

construction Built for Stable Multi-Module Integration:

Many CYD builds become unreliable when several modules share the same IO lines. SPI bus. and power paths. This can lead to interference. unstable operation. and complicated jumper-wire setups. The NM-RF-HAT Companion CYD is designed to solve that problem by keeping everything routed on one board with a dedicated hardware RF switching system. The result is a cleaner setup. easier installation. and better day-to-day stability for advanced portable builds.

memory Technical Highlights:

• RF Modules: CC1101 (433MHz). nRF24L01 (2.4GHz). RF433 OOK TX/RX
• Utility Modules: PN532 NFC. IR TX/RX. TF card slot
• Power Features: USB-C input. battery charging circuit. BAT On/Off switch
• Expansion Headers: GNSS header. VCC + UART. Power + UART. TF extension
• Control Method: Hardware RF DIP switch for cleaner module isolation
• Coverage: Multi-band support with 433MHz + 2.4GHz + 13.56MHz NFC

flash_on Example Use Cases:

• 📡 433MHz Sub-GHz signal testing and RF analysis
• 📶 2.4GHz wireless protocol experiments with nRF24L01
• 🏷️ NFC / RFID card. tag. and emulation testing
• 📍 GNSS-assisted field projects and mobile setups
• 🧪 Compact CYD-based diagnostics and portable hardware experimentation
• 🔌 Cleaner all-in-one expansion for advanced ESP32 projects

verified Compatibility:

This board is designed primarily for ESP32-2432S028 (Cheap Yellow Display / CYD) and also supports compatible ESP32-S3 development boards. It is intended for users building custom portable platforms. testing tools. and advanced integrated hardware projects that benefit from having multiple onboard modules in a single companion board.

Important — Handmade Product Notice:
This is a personal handmade product. Minor defects. small cosmetic variations. or future hardware revisions may exist. Returns or exchanges are not supported. Please purchase only if you accept handmade characteristics.

⚠️ Legal & Usage Disclaimer:
This product is intended for learning. research. and hardware / signal analysis only. Do not use it for illegal activities. Compliance with local laws and regulations is the responsibility of the user.

Important Power Note:
This board includes a battery management / charging circuit. but no battery is included in the package. You must use your own compatible battery if needed for portable operation.

Package Includes:
• 1 × NM-RF-HAT Companion CYD board
• Battery not included