| + Frequency | 915 MHz (USA) / 868 MHz (Europe) |
| + Transmission Power | up to 1 W |
| + Receive Sensitivity | -110 dBm |
| + Operating Temperature | -20C to 60C (-4F to 140F) |
| + Frequency | 915 MHz (USA) / 868 MHz (Europe) |
| + Transmission Power | up to 1 W |
| + Receive Sensitivity | -110 dBm |
| + Operating Temperature | -20C to 60C (-4F to 140F) |
| + Frequency | 915 MHz (USA) / 868 MHz (Europe) |
| + Receive Sensitivity | -110 dBm |
| + Operating Temperature | 0C to 40C (32F to 104F) |
| + Standard Antenna | 2 dBi, omnidirectional |
| + High-Gain Antenna | 5 dBi, directional (optional) |
Applications
| The 3DR Radio Telemetry Kit is suited for various applications, including |
UAV surveying and mapping
Drone racing and aerial sports
Agricultural monitoring and precision farming
Search and rescue operations
Environmental monitoring and research
Conclusion
The 3DR Radio Telemetry Kit provides a reliable, high-performance wireless communication solution for UAV and drone applications. Its long-range capabilities, low latency, and secure data transmission make it an ideal choice for professionals and hobbyists alike.
3DR Radio Telemetry Kit DocumentationOverviewThe 3DR Radio Telemetry Kit is a popular wireless communication system designed for drone and unmanned aerial vehicle (UAV) applications. The kit consists of a pair of radio modules, one for the transmitter (TX) and one for the receiver (RX), which enable reliable and high-speed data transmission between the drone and the ground control station.Key FeaturesRange: Up to 1 km (0.62 miles) line-of-sight
Data Rate: 250 kbps
_frequency: 915 MHz (or 433 MHz for EU version)
Power Consumption: 100 mA (TX), 50 mA (RX)
Weight: 12 grams (TX), 10 grams (RX)Code Examples### Example 1: Basic Telemetry Transmission (Arduino)This example demonstrates how to use the 3DR Radio Telemetry Kit to transmit telemetry data from an Arduino-based drone to a ground control station.TX Code (Drone Side)
```c++
#include <RH_RF95.h>#define TXPin 5 // Pin for TX module
#define RHTx RH_RF95(TXPin, 915000000)void setup() {
Serial.begin(9600);
RHTx.init();
}void loop() {
// Read sensor data (e.g., altitude, speed, Heading)
int altitude = 100; // Example sensor reading
int speed = 50; // Example sensor reading
int heading = 270; // Example sensor reading// Create telemetry packet
char telemetryPacket[32];
sprintf(telemetryPacket, "ALT:%d,SPD:%d,HDG:%d", altitude, speed, heading);// Send telemetry packet
RHTx.send((uint8_t )telemetryPacket, strlen(telemetryPacket));
delay(100);
}
```
RX Code (Ground Control Station)
```c++
#include <RH_RF95.h>#define RXPin 5 // Pin for RX module
#define RHRx RH_RF95(RXPin, 915000000)void setup() {
Serial.begin(9600);
RHRx.init();
}void loop() {
if (RHRx.available()) {
uint8_t buf[RH_RF95_MAX_MESSAGE_LEN];
uint8_t len = RH_RF95_MAX_MESSAGE_LEN;
RHRx.recv(buf, &len);// Print received telemetry packet
Serial.println((char )buf);
}
}
```
### Example 2: Bidirectional Communication (Python)This example demonstrates how to use the 3DR Radio Telemetry Kit for bidirectional communication between a Python-based ground control station and a drone.TX Code (Drone Side)
```python
import serial
import time# Initialize serial connection to TX module
ser = serial.Serial('/dev/ttyUSB0', 115200)while True:
# Send "Hello, World!" to the ground control station
ser.write(b'Hello, World!')
time.sleep(1)# Receive command from the ground control station
response = ser.readline()
if response:
print(response.decode())
```
RX Code (Ground Control Station)
```python
import serial# Initialize serial connection to RX module
ser = serial.Serial('/dev/ttyUSB1', 115200)while True:
# Receive telemetry packet from the drone
response = ser.readline()
if response:
print(response.decode())# Send command to the drone
ser.write(b'Land now!')
time.sleep(1)
```
Note: These code examples are meant to illustrate the basic usage of the 3DR Radio Telemetry Kit and may require modifications to suit your specific application.