Skytraq PX1122R Tiny Multi-Band RTK GNSS Module Offers Centimeter Accuracy

Several years ago Skytraq introduced NavSpark mini, a tiny (17x17mm) GPS module, that sold for $6. I got one and wrote a post explaining how to get started with the GPS module using GNSS viewer program. The company contacted me again today, as they’ve now launched an even smaller module Skytraq PX1122R measuring just 16x12mm, supporting GPS, Galileo, GLONASS, and Beidou signals, as well as Real-time Kinematic (RTK) relative positioning technique that allows for 1-3cm positioning accuracy. Skytraq PX1122R RTK GNSS module key features & specifications: Chipset – SkyTraq PX100 Phoenix GNSS chipset Supported GNSS standards & bands – GPS L1/L2C, Galileo E1/E5b, Beidou  B1I/B2I, GLONASS L1/L2, QZSS L1/L2C Integrated RTK with 1cm + 1ppm RTK accuracy in seconds (under 10 seconds) Up to 10Hz quad-GNSS RTK update rate Base or rover mode configurable Serial Interface – 3V LVTTL level 24x castellated holes with UART, RF input, 1PPS, Reset, 3.3V, GND (most pins not used) Input Voltage – 3.3V DC …

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Getting Started with NavSpark mini GPS Module

NavSpark_mini_BreadBoard

I noticed NavSpark mini GPS module a couple of weeks ago, and since it was free, not including $10 for shipping, I went ahead and ordered. Since the freebie got popular, SkyTraq took some time to ship it, and when they did they provide a “not trackable” tracking number, which I’m not sure what that means as I could track the parcel from Taiwan to Thailand using 17track website without issues. The packages included NavSpark mini and a USB to TTL module as described, so I insert both and connect VCC, GND, and UART as shown on the pictures on the product page. I also connected the GPS antenna from LinkIt ONE development kit to the uFL connector on NavSpark mini, as well as a micro USB to USB cable to my computer. If you don’t have such antenna, you’ll need to add the $9 GPS/GLONASS antenna on NavSpark website to your order. The easiest way to get started, and …

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NavSpark mini is a $6 Arduino Compatible GPS Board

One person asked me whether any of the low cost boards in my Raspberry Pi Zero vs CHIP vs Orange Pi One comparison post came with GPS, and the answer is not without some external hardware. The only low cost boards with GPS I could think of were LinkIt ONE and NavSpark. I wrote about the latter over 2 years ago when the board launched via a crowdfunding campaign, so I went to the update page to find out more about the current status, and found two updates made in the last 6 months, including one about Navspark mini, a tiny board with GPS support, removing the USB port and having fewer I/Os compared to its older brother. NavSpark mini specifications: MCU – Skytraq Venus828F 32bit LEON3 Sparc-V8 MCU @ 100MHz  with IEEE-754 Compliant Floating Point Unit, 1024KB Flash Memory, and 212KB RAM GPS 167 channel Venus 8 engine Uses GPS, SBAS, QZSS signals 1 ~ 10 Hz update rate …

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