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T-embed cc1101 Plus

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📡 RF Modules: 433MHz + 2.4GHz wireless expansion

🏷️ NFC & IR: PN532 NFC with infrared TX/RX

🔋 Clean CYD Build: TF slot, USB-C, DIP switch, power control

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T-embed cc1101 Plus

T-embed cc1101 Plus

$120.00
$120.00
SAVE Liquid error (snippets/price line 112): Computation results in '-Infinity'% Sold out
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developer_board Multi-Band RF Companion Board

NM-RF-HAT Companion CYD

All-in-One RF, NFC, IR, GNSS, Storage & Power Expansion Board for CYD / ESP32 Projects

The NM-RF-HAT Companion CYD is a powerful multi-band RF companion expansion board built for ESP32-2432S028 / Cheap Yellow Display (CYD) and compatible ESP32-S3 development boards. It brings together CC1101 Sub-GHz 433MHz, nRF24L01 2.4GHz, PN532 NFC 13.56MHz, IR TX/RX, RF433 OOK TX/RX, GNSS expansion, TF card storage, USB-C power, and battery management into one clean, compact board.

CC1101 433MHz nRF24L01 2.4GHz PN532 NFC IR TX/RX GNSS Header TF Card Slot
settings_input_antenna Sub-GHz RF
wifi_tethering 2.4GHz Module
contactless NFC / RFID
settings_remote Infrared
gps_fixed GNSS Ready
sd_card TF Storage

info Product Overview

All-in-One CYD Expansion

Combines RF, NFC, IR, storage, GNSS expansion, USB-C power, and battery management into a compact companion board.

Cleaner Hardware Builds

Designed to reduce external wiring and keep ESP32/CYD portable builds cleaner, more stable, and easier to organize.

Multi-Band Research Platform

Supports 433MHz Sub-GHz, 2.4GHz wireless experiments, 13.56MHz NFC, infrared testing, and GNSS-assisted projects.


  • • Built for ESP32-2432S028 / Cheap Yellow Display (CYD) and compatible ESP32-S3 boards.
  • • Includes CC1101 Sub-GHz 433MHz support for RF testing, signal analysis, and compatible Sub-GHz workflows.
  • • Includes nRF24L01 2.4GHz module support for wireless protocol experiments and 2.4GHz research setups.
  • • Includes PN532 NFC 13.56MHz for NFC/RFID card, tag, and authorized test workflows.
  • • Includes IR TX/RX for infrared capture, testing, and compatible remote-control experiments.
  • • Includes RF433 OOK TX/RX for simple 433MHz OOK signal workflows in supported projects.
  • • Includes TF card slot, GNSS header, USB-C input, and BAT On/Off switch.

hub Key Features

Hardware RF DIP Switch

Allows hardware-level module isolation to reduce SPI bus conflicts, IO clashes, interference, and unstable behavior.

CC1101 Sub-GHz

Dedicated 433MHz Sub-GHz support for RF testing, compatible signal analysis, and authorized lab research.

nRF24L01 2.4GHz

Onboard 2.4GHz wireless module for protocol experiments, signal observation, and ESP32-based research projects.

PN532 NFC 13.56MHz

Built-in NFC/RFID support for compatible cards, tags, testing, and authorized development setups.

Dedicated Rear NFC Area

Optimized PCB antenna area designed to improve NFC card/tag coupling and make testing easier.

Integrated IR TX/RX

Supports infrared capture, replay testing, and compatible remote-control experiments in lawful setups.

RF433 OOK TX/RX

Integrated 433MHz OOK transmit/receive hardware for supported simple signal workflows and learning projects.

GNSS Expansion Header

Ready for external GPS/GNSS module connection for mobile, field-use, and location-assisted projects.

Power Management

USB-C input, battery charging circuit, and BAT On/Off switch for portable-ready power design. Battery is not included.

settings Technical Highlights

Product Name NM-RF-HAT Companion CYD
Main Compatibility ESP32-2432S028 / Cheap Yellow Display (CYD)
Additional Compatibility Compatible ESP32-S3 development boards and similar ESP32-based projects
Sub-GHz Module CC1101 433MHz for Sub-GHz testing and RF analysis
2.4GHz Module nRF24L01 module for 2.4GHz wireless protocol experiments and signal observation
NFC / RFID PN532 NFC 13.56MHz with dedicated rear NFC read area
Infrared Integrated IR TX/RX for infrared testing and compatible remote-control experiments
RF433 RF433 OOK TX/RX for simple 433MHz OOK workflows in supported projects
Storage TF card slot plus TF extension support for storage-based functions
Expansion Headers GNSS header, VCC + UART, Power + UART, and TF extension
Power USB-C input, battery charging circuit, and BAT On/Off switch
Control Method Hardware RF DIP switch for module isolation and cleaner multi-module operation
Frequency Coverage 433MHz + 2.4GHz + 13.56MHz NFC
Battery Battery management circuit included. Battery is not included in the package.

construction Built for Stable Multi-Module Integration

Reduces Wiring Mess

Many CYD projects require multiple external modules, jumper wires, and separate power paths. This board keeps the setup cleaner by routing major functions onto one companion board.

Improves Module Isolation

The hardware RF DIP switch helps isolate modules at hardware level, reducing conflicts between shared IO lines, SPI bus paths, and RF modules.

Cleaner Stack-Style Setup

Designed for a compact stack-style installation with CYD, helping advanced makers build more organized portable signal-analysis devices.

Firmware-Friendly Design

Compatible with Bruce firmware and similar ESP32-based projects, depending on selected firmware build and board configuration.


Integration Note: Exact installation, wire connection, firmware behavior, and supported functions may vary depending on your CYD version, ESP32-S3 board, firmware build, and selected hardware revision.

flash_on Example Use Cases

  • • 433MHz Sub-GHz testing and RF signal analysis in authorized lab environments.
  • • 2.4GHz wireless protocol experiments using the onboard nRF24L01 module.
  • • NFC / RFID card, tag, and emulation testing in authorized development setups.
  • • Infrared signal testing for compatible remote-control and IR learning projects.
  • • GNSS-assisted field projects using an external GPS/GNSS module.
  • • Compact CYD diagnostics, portable hardware experimentation, and ESP32 learning builds.
  • • All-in-one expansion for advanced makers who want fewer wires and cleaner multi-module layouts.

inventory_2 What This Kit Includes

  • • 1 × NM-RF-HAT Companion CYD board
  • • Integrated CC1101 433MHz Sub-GHz hardware
  • • Integrated nRF24L01 2.4GHz module support
  • • Integrated PN532 NFC 13.56MHz hardware
  • • Integrated IR TX/RX
  • • Integrated RF433 OOK TX/RX
  • • GNSS expansion header
  • • TF card slot and TF extension support
  • • USB-C input, battery charging circuit, and BAT On/Off switch
  • • Battery not included

Package Note: Package contents, board revision, connector layout, accessory set, and minor hardware details may vary depending on batch or selected version.

priority_high Important Notes

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 portable operation is needed.

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.

Compatibility Note:
This board is designed primarily for ESP32-2432S028 / CYD and compatible ESP32-S3 development boards. Firmware support may vary depending on the project, build version, and selected hardware configuration.

warning Legal & Usage Disclaimer

Important:
This product is intended for learning, research, hardware/signal analysis, educational projects, authorized diagnostics, interoperability testing, and lawful laboratory use only. Do not use it for illegal activities. The user is solely responsible for complying with all local laws, regulations, radio-frequency rules, import restrictions, and marketplace policies. The seller assumes no liability for misuse, improper operation, unsafe batteries, unauthorized activity, or use outside lawful environments.

MULTI-BAND RF COMPANION EXPANSION BOARD

NM-RF-HAT

All-in-one ESP32-2432S028 / CYD expansion board
with CC1101 433MHz, nRF24L01 2.4GHz, PN532 NFC,
IR TX/RX, RF433 OOK, GNSS header, TF card slot,
USB-C power, DIP switch, and battery management.

MULTI-BAND CYD EXPANSION BOARD

NM-RF-HAT Companion CYD

All-in-one ESP32-2432S028 / CYD expansion board with CC1101 433MHz, nRF24L01 2.4GHz, PN532 NFC, IR TX/RX, RF433 OOK, GNSS header, TF card slot, USB-C power, DIP switch, and battery management.

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