The second prize of CNX Software’s giveaway week does not come directly from me, but instead, RAKwireless accepted to offer a sample to add to the event: Wisblock Kit 2.
The kit is a LoRa-based GPS tracker that comes with a sensor to detect location change every set time interval, and ships with a solar panel, although you could also offer it with a set of batteries (not included).
Since I’ve never written about this kit, let’s go through the main building blocks:
- RAK5005-O base board
- Slots for 1x WisBlock Core MCU module, up to 4x WisBlock Sensor modules, and one WisBlock IO module
- I2C, UART, GPIO’s and analog input accessible with solder contacts
- Debugging – USB debug port
- Misc- 2x user LED’s, reset button
- Supports 3 different power supply sources
- 1 slot for WisBlock Core MCU
- RAK4631 Wisblock Core module
- WiSoC – Nordic nRF52840 with Bluetooth Low Energy 5.0 connectivity
- LoRa
- Sentech SX1262 transceiver
- LoRaWan 1.0.2 protocol stack (supports Class A & C)
- RAK1904 accelerator module with STMicro LIS3DH acceleration sensor
- RAK1910 GPS module based on U-Blox MAX-7Q GNSS module with support for GPS/QZSS and GLONASS; 2.5m accuracy, 10 Hz update rate
You’ll find documentation on the RAK store where it is sold for $77.28 (also on Aliexpress), as well as an Arduino sketch sample on Github.
To enter the draw simply leave a comment with your country and whatever else you’d like to say. If the country is missing, I’ll consider the entry void. Other rules are as follows:
- Only one entry per contest. I will filter out entries with the same IP and/or email address.
- Contests are open for 48 hours starting at 10 am (Bangkok time) every day.
- Comments will be closed after 48 hours. If comments are open, the contest is still going on.
- Winners will be selected with random.org, and announced in the comments section of each giveaway.
- I’ll contact the winner by email, and I’ll expect an answer within 24 hours, or I’ll pick another winner.
- Note that I may not be able to contact people who log in with Facebook, Twitter, or Google, so it’s better to use an email address to enter the daw.
- Shipping will be handled by RAKwireless, and I’ll forward the winner’s email to arrange shipment.
- I’ll make sure we have 7 different winners, so if you have already won a device during this giveaway week, I’ll draw another person.
Good luck!

Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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