OREGON STATE UNIVERSITY

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HKPilot 500mW Transceiver Telemetry Radio Set V2 (915Mhz)

Features

    Features:
  • Micro-USB port
  • 500 mW maximum output power (adjustable)
  • SMA connector
  • 2-way full-duplex communication through adaptive TDM
  • UART interface
  • Configurable duty cycle
  • Error correction corrects up to 25% of bit errors

    Specs:
  • Supply voltage: 3.7-6 VDC (from USB or Molex connector)
  • Transmit current: 500 mA at 27 dBm
  • Receive current: 25 mA
  • Serial interface: 3.3 V UART

Documentation

Quick Start Guide

This set includes two separate radio modules (with associated cables) that can both transmit and receive data over distances up to a mile. Since they communicate via UART, one can either connect a given module to a microcontroller or to a computer serial port. No FTDI is needed since you can directly connect the radios with a mini USB cable.

Parts Needed:

  • 2 1k resistors
  • 1 220 ohm resistor
  • 1 LED
  • 2 Teensy 2.0
  • 1 button
  • 1 HKPilot telemetry radio 500mW 915MHz module (transmitter and receiver)
  • Female-Female prototyping wires
  1. Connect the radios to Teensy 2.0's as per the wiring diagram below. The resistors are used to level shift the Teensy's 5V signal in order to not damage the radios.
  2. Program the Teensy's, one with the transmitter code and one with the receiver code.
  3. Press the button connected to the transmitting Teensy to light the LED connected to the receiving Teensy.