Is your project linked to environmental protection, awareness or study, or to protecting human life? Perhaps you are developing a wildlife tracker, ocean buoy, environmental monitoring system or need to transfer emergency medical information? Do you need to be able to transmit and receive data anywhere? If so, this is the product for you! Our ARGOS Satellite Transceiver Shield allows you to send and receive short bursts of data via the ARGOS satellite network, anywhere on Earth including the Polar regions.
The ARGOS system has been around for quite a while. It was created in 1978 by the French Space Agency (CNES), the National Aeronautics and Space Administration (NASA) and the National Oceanic and Atmospheric Administration (NOAA), originally as a scientific tool for collecting and relaying meteorological and oceanographic data around the world. Today, ARGOS is revolutionising satellite communication, adding a constellation of 25 nanosatellites to complement the 7 traditional satellites carrying ARGOS instrumentation. The first of these, ANGELS, is already in operation and SparkFun were among the first users to transmit data to ANGELS in October 2020. When the constellation is complete, there will be a maximum of 10-15 minutes between satellite passes.
Our transceiver shield has been tested and certified by Kinéis for ARGOS 2, 3 and 4 communication. Compared to other satellite communication systems, our shield has a much lower current draw and will work with a very simple, very lightweight quarter-wave wire antenna. The ARTIC R2 chipset on our shield operates from 3.3V and the on-board flash memory enables fast boot times. If you don’t need the full transmit power, or want to conserve your battery life, you can transmit at reduced power too thanks to the opto-isolated gain pin. Our shield is designed to be used with our SparkFun Thing Plus - Artemis but will work with any of our Thing Plus boards. Want to solder on header pins so you can attach hook-up wires or plug it into a breadboard? You can do that too. The interface is 3.3V SPI and will work with a huge range of microcontrollers.
Our Arduino Library makes it really easy to get up and running with ARGOS. We’ve provided a full set of examples which will let you: configure the ARTIC R2 chipset; predict the next satellite pass; receive allcast and individually-coded messages; transmit messages using ARGOS 2, 3 and 4 encoding.
The ARGOS satellite system is currently restricted to specific programs and applications. Please check that your project meets these requirements before buying hardware. CLS (France) and the Woods Hole Group (America) will be able to advise if your project meets the requirements. "To meet system use requirements, all programs using Argos have to be related in some way or other to environmental protection, awareness or study, or to protecting human life." Please see our ARGOS ARTIC R2 Communication Guide for more details.
Thanks! The ARTIC R2 circuit is a remix of the reference design kindly provided by the Arribada Initiative and Icoteq Ltd.
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Features:
- ARTIC-R2 ChipsetÂ
- Serial interface (SPI) for communication with MCU
- Programmable DSP core on board to ensure flexibility
- RX frequency : 466MHz
- TX frequency: 400MHz
- Fractional N frequency synthesis
- Supported TX standards:
- BPSK: PTT-A2 (ARGOS 2), PTT-VLD (ARGOS 4)
- QPSK: PTT-A3, PTT-ZE (ARGOS 3)
- GMSK: PTT-HD (ARGOS 3), PTT-MD (ARGOS 4), PTT-HD (ARGOS 4)
- Supported RX standards:
- BPSK: PMT-A3 (ARGOS 3)
- DSSS OQPSK: PMT-A4 (ARGOS 4) not available
- Supports COSPAS-SARSAT standard
- RFPA0133 Power AmplifierÂ
- Boosts the 0dBm (1mW) output from the ARTIC by up to 26dB
- Typical maximum transmit power level: 400mW
- Programmable gain via the G8 breakout pin
- TCXOÂ
- 26MHz temperature-compensated crystal oscillator for maximum stability
- SST25VF020B Flash memoryÂ
- Stores the ARTIC firmware, allowing fast boot times
- Power requirements:Â
- VUSB: typically 5VDC. 6.5VDC maximum.
- VBATT: typically 3.6 - 4.2VDC. 6.5VDC maximum.
- Typical VUSB current draw:
- Sleep: 51µA
- Idle: 7.2mA
- Receive: 32.8mA
- Transmit (G8 pin high): 220mA
- Transmit (G8 pin low): 170mA
- Weight: 3g (0.1oz)
Documents:
ARGOS Satellite Transceiver Shield Documentation:
- Schematic
- Eagle Files
- ARGOS Chipset Info Sheet
- ARTIC R2 User Datasheet v1.1
- GitHub Hardware Repo
- Hookup Guide
- Arduino Examples
- SparkFun ARGOS ARTIC R2 Arduino Library
- Test certificates:Â
ARGOS ARTIC R2 Documentation:
