Hardware: RF & Wireless Technology
HIZMOS is built around a multi‑radio architecture that combines several specialized transceivers, giving it capabilities far beyond typical hobby devices. Each module is selected to cover a different band, modulation type, or protocol, enabling advanced testing, analysis, and educational experimentation in RF systems.
# 1. Dual GT24 Mini Modules (2.4GHz Long‑Range Transceivers)
HIZMOS includes two GT24 Mini modules — compact 2.4GHz digital transceivers designed for long‑range, low‑latency communication.
Technical Highlights
Frequency: 2400–2483 MHz
Modulation: GFSK
Output Power: Up to 20dBm (with proper regulation)
Range: Up to ~1.5 km with 6dBi antennas
SPI interface for fast MCU communication
High‑speed packet engine for real‑time apps
Why two modules?
Two GT24 modules allow:
Full duplex tests
Monitoring a channel while transmitting on another
Custom mesh networks
Device‑to‑device long‑range links (HIZMOS ↔ HIZMOS)
These modules are extremely useful for STEM wireless experiments, like building your own:
Remote sensors
Robot control links
RF data protocols
Packet‑level analyzers (legally, with your own devices)
HIZMOS integrates two CC1101 chips, the gold standard for sub‑GHz experimentation.
Technical Highlights
Frequencies: 315, 433, 868, 915 MHz
Modulation: ASK, FSK, GFSK, OOK
Excellent sensitivity (up to –110 dBm)
Configurable bandwidth from 58 kHz to 812 kHz
Low‑power mode for battery‑driven projects
Why two CC1101 chips?
Security researchers often need:
A dedicated receiver
A dedicated transmitter
Channel monitoring
Simultaneous capture & injection
RF replay labs
In labs, professionals use these setups to:
Study wireless key fobs
Evaluate rolling code robustness
Analyze custom RF protocols
Build controlled RF simulations
Important: Real‑world car keys use encryption/rolling codes. HIZMOS is designed for research on your own devices, not unauthorized interception.
HIZMOS includes a high‑power IR LED (transmit) and wide‑band IR photodiode (receive).
Technical Highlights
Supports 38kHz carrier (Sony, NEC, etc.)
Works with modulated & raw IR signals
Can log IR bursts for educational protocol analysis
Can replay signals for controlling your own devices
IR is a great STEM tool for learning:
Carrier modulation
Envelope detection
Manchester encoding
Remote control protocols
HIZMOS includes:
PN532 → 13.56 MHz (NFC A/B/F, MIFARE, ISO14443)
125kHz module → LF cards (emulation + reading for compatible formats)
Engineering Power
Multiple read modes
Field strength measurement
Signal modulation tests
Card emulation for your own badges and projects
This allows you to experiment with:
RFID systems
Access control prototypes
Custom card formats
Digital identity labs
The onboard ESP32-S3 brings:
2.4GHz WiFi b/g/n (esp07)
5GHz WiFi (bw16)
Full packet-level monitoring
High‑speed BLE 5.0
Technical Power
Packet injection (in controlled lab environments)
Frame analysis
Beacon & probe exploration
RSSI mapping
Low‑latency handshake measurement
About deauthentication / handshake tools
These are standard features in:
Network security courses
Wi-Fi penetration testing labs
Router robustness testing
The MCU powering HIZMOS provides:
Dual-core Tensilica LX7 at 240MHz
16MB flash, 8MB PSRAM
AI instructions (vector ops)
Dedicated DMA engines for high-speed RF data movement
USB OTG
SPI/I2C/UART/CAN
This makes the device capable of:
Real‑time RF analysis
FFT and signal processing
Multi-threaded protocol decoding
Fast packet buffering
HIZMOS exposes:
GPIO
SPI
I2C
UART
CAN
+5V, +3.3V rails
This enables:
5GHz radio hats
LF/HF RFID antennas
SDR-lite experiments
Sensor packs
Motor/servo control hats
You can expand HIZMOS endlessly with new modules.