The latest hardware version of Mini-TX makes is very easy to connect with PixHawk as well because it has a dedicated 6-pin socket on the board. With just two wires (UART TX and ground), it is possible to get the location data from the Mini-TX to PixHawk and make the PixHawk believe it is connected to a real GPS.

Comparison of Mini-TX to Super-Beacons:

• Mini-TX is a TX-only beacon – it can transmit ultrasound but can’t receive it. Super-Beacons and Beacons HW v4.9 is dual-use beacons – they can receive and transmit ultrasound
• Mini-TX is smaller and lighter: 47x42x15mm & 25g vs. 55x55x33mm & 62g (or 55x55x64mm with antenna). Size is the key advantage of Mini-TX. Without battery and housing – the bare board with transducers – it weighs just 6.4 grams
• Battery – 250mAh vs. 1000mAh in Super-Beacons and Beacons HW v4.9. But Mini-TX has a new, more efficient ultrasonic TX module; thus, battery lifetime in TX mode is even superior to the Beacon HW v4.9
• Tested battery lifetime with 8Hz – 96h. With a lower update rate – nearly proportionally longer
• Mini-TX (newer hardware Ver. 2) has a micro USB (virtual UART) output for connectivity to the Dashboard or, for example, Raspberry Pi, and it also has an additional 6-pin socket for the external UART connectivity, for instance, with PixHawk
• Mini-TX, like Super-Beacons, has a 6D IMU
• Embedded antenna in Mini-TX – smaller size, but smaller radio coverage ~50m
• Ultrasound signal from Mini-TX is slighter weaker than that of Super-Beacons, but it still reaches 30m. The range depends more on the ultrasound frequency than on the difference between Mini-TX and Super-Beacon
• Mini-TX has only a 31kHz frequency. On request and for larger quantities (a few 100s of pieces), we can produce Mini-TXs with several other frequencies as well
• Mini-TX supports license-free 915MHz ISM band (US) and license-free SRD band 868MHz (EU), i.e., the 433MHz (EU band) is not supported and not planned. However, it is possible to use an external 433MHz with minor modifications, if needed