Adafruit
USB Type C to DB-9 Adapter Cable - 1.5m long
This USB Type C cable adds a DB-9 (DE-9) serial port to your computer or laptop. Works with MacOS X, Linux, and Windows. Note that this provides (approximate...
This USB Type C cable adds a DB-9 (DE-9) serial port to your computer or laptop. Works with MacOS X, Linux, and Windows. Note that this provides (approximately) +-6V serial (RS232) not 5V serial (TTL), good for old devices like GPS, handhelds, programmers, etc with chunky DB9's on the side. Some cheaper RS232 cables 'cheat' and only give you 0-5V which won't work with some devices - this one has a true voltage doubler/inverter to make it more compatible.
These are tested and work great with bit-bang serial programmers and adapters - note that they are slow compared to hardware serial ports due to the high overhead of USB.
They're now FTDI-chip based for better performance and reliability. The drivers are rock solid and available for pretty much every operating system you will run across.
If you need to use RS-232 with a computer that has only Type A ports, check out this cable here.
Jargon buster
Plain-language definitions for the technical terms used above.
- GPS
- The US satellite navigation system used by GNSS receivers to calculate position and time. Support for GPS is important because it is widely available and often used together with other constellations for more reliable positioning.
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