LoRaWAN 868MHz STM32L151 sensor board in a IP65 plastic case with wall mount and 2 AA LiSoCL2 batteries for making embedded projects.Designed by Wyld Things in France
A embedded development device for development of sensor/control type projects. It consists of a PCB, a custom injection moulded plastic case and wall mount bracket, and a 2400mAh AA sized battery (Li…Read More…
A embedded development device for development of sensor/control type projects. It consists of a PCB, a custom injection moulded plastic case and wall mount bracket, and a 2400mAh AA sized battery (LiSoCL2) to run it.
PCB: Core functionalities
The case has a zone with air exchange holes, to allow air pressure to equalise. This can be sealed (hot glue) to achieve best water resistance. Alternatively a water resistant air filter (type goretex, not supplied) can be placed to cover this area, which lets the altimeter sensor correctly sense the external air pressure while keeping water out.
Origin The device was designed and produced by a company (Wyres SAS in France) who subsequently discontinued the product. This is the remaining stock of units that were never assembled. The full schema and documentation are available on a github project for developers.
Firmware The board has a well developed and very functional open source firmware build available on github, which means that using this product as the basis for a sensor/IO device should be very easy for any reasonably experienced (C firmware) developer. The firmware functionality plus the IO connections mean that adding extra sensor/control outputs should also be pretty simple.
Obviously it is also possible to just use the hardware and do your own thing for the firmware - its a standard STM32 - the flash/RAM is limited but for C dev its fine.
NOTE The antenna and tuning components are for the 868MHz band. Althought the SX1272 can be configured to run at different frequencies, only those 'near' to 868MHz will get a reasonable performance - RU and IN bands have been tested as ok. However, 900/915MHz bands will not be usable with this product. In addition, the CE/RF testing is valid only for EU geographies, not for the US (no FCC approval).
WARNING Note that the product is supplied as a development kit - the MCU is NOT flashed or configured to do anything out of the box, and you will need to be comfortable with creating your embedded image and flashing it to the MCU (see photo example of using an ST-Linkv2 and a clip - NOT included) to be able to use it. Note also that this is NOT an Arduino supported board so you cannot use that eco-system to program it.
NEW - port of RIOT OS https://github.com/CampusIoT/RIOT-wyres
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