Looking for a low-cost way to send and receive data messages via satellite? This is it! With a clear view of the sky, the Satellite Transceiver Breakout - Swarm M138 allows you to send and receive short messages. It works anywhere in the world, including the polar regions, far beyond the reach of WiFi and Cellular networks. It is perfect for a variety of low-bandwidth use cases: from connecting people and tracking vehicles, ships, or packages to relaying sensor data for agriculture, energy, and industrial IoT applications. The built-in GNSS receiver makes it perfect for many tracking applications.
At the heart of our product is a Swarm M138 satellite modem. This is a Mini-PCI Express Card containing both the satellite modem and a very capable u-blox GNSS receiver, all in one integrated package! It can operate from a wide range of supply voltages: 3.0V Min; 5.0V Max. Its standard 3.3V CMOS serial UART interface and NMEA-style command set makes it easy to integrate into your project. Our board includes both a USB-C interface (for power and/or serial data) and a full set of breakout pins. Want to plug it into your laptop or Raspberry Pi and use it to communicate out in the field? You can absolutely do that! We've written a Python3 PyQt5 GUI to get you started. Full details are available in the hookup guide and in the product repo. Want to connect it to your Arduino microcontroller board? You can absolutely do that too! Our Swarm Arduino Library makes that easy.
Our kit contains everything you need to get started:
See below for our recommended extras.
Want to know more? Click the button below to open our hook-up guide:
If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.
Skill Level: Experienced - You will require a firm understanding of programming, the programming toolchain, and may have to make decisions on programming software or language. You may need to decipher a proprietary or specialized communication protocol. A logic analyzer might be necessary.
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If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Competent - You will be required to reference a datasheet or schematic to know how to use a component. Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current.
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We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.
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Hi SparkFun, very interesting product you have here! Could you please confirm what specific uBlox chipset is integrated with this unit? I've checked the manual, pictures, and GitHub and I've not been able to confirm which chipset comes bundled with the board.
The u-blox GNSS is built into the modem itself. You only have access to it through the modem's $DT, $GJ, $GN and $GS messages. You can't access the NMEA or UBX data directly... It is almost certainly an M8 IC/module but the manual does not say which one.
Link to the Swarm Data Plan is dead - https://swarm.space/swarm-data-plan/ redirects to the the homepage. I also can't find a way to order just the data plan by navigating their site. They sell the M138 in multiples of 25 on their site (and I suppose they set you up with a plan for the 25 on purchase) but I'm not sure how I'm supposed to activate a single unit bought from Sparkfun.
https://bumblebee.hive.swarm.space/login to create account.
https://swarm.space/
What satellite constellation are supported? do they have full coverage full time of the world?
They use their own (Swarm) network. Satellites are sun-synchronous so pass over at the same time each day. They come over in about five bands. So you can’t expect instant reception of messages 24 hours a day, but you can guarantee pretty much that a message will get through in a few hours or less. This does depend on how good your antenna is (and if you are building your own board, you must make it a low noise psu).
The Hook-Up Guide contains more information about the network and predicting the next satellite pass:
Swarm Network
Pass-Prediction
Best wishes, Paul