There are many projects for building low cost environmental sensors using Arduino and similar open source microcontrollers (see here).  FreeStation differs from these because to build and deploy FreeStation or FreeSensor requires zero knowledge of electronics, programming or making.  FreeStation is low cost sensing for all as the devices are plug and play.  However,  if you are an electronics whizz and have your own project that you wish to design and code  you may still find the FreeStation PCBs and designs of use for it.

FreeStation and FreeSensor designs have been in development since January 2014.  As each design matures the build instructions are developed and made available below.  The support of the open source hardware, Arduino, ESP8266 and Particle open source communities is gratefully acknowledged.  

The Generation 2.0 (Particle) builds are current, in active development and the default going forward.  The Generation 1.0 (Arduino) builds are mature and no longer being developed.  Do not mix instruments and loggers between Generation 1.0 and Generation 2.0 as they may not be compatible. See our FreeStation FAQ to submit or review answers to commonly asked questions.
The Kinguino
FreeStation uses the Arduino and Particle families of microprocessor development boards to provide cheap, flexible sensor control, datalogging and communications.  All FreeStations can be built with widely available Arduino Pro mini 3.3V clones or  Particle WiFi, cellular or mesh devices.  

With Arduino, FreeStation has worked with Andice Labs to produce an Atmel644 version of the Anduno development board which we call the Kinguino. The Kinguino is a high memory,  ultra-low power version of the Arduino, designed for environmental monitoring applications,  with the following advantages:
  • Ultra low-power
  • The ability to programmatically switch off shields when not in use, for power saving
  • Arduino UNO form factor for compatibility with a range of shields
  • The ATmega 644 processor provides more memory for more sophisticated programming and control
  • The ATmega 644 provides more pins to attach sensors
FreeStation Terms and Conditions

  • FreeStation and FreeSensor designs are made freely available  for non-commercial or commercial use with the following conditions.   Any organisation using, modifying and/ or selling our open source designs, whether for profit or not, must abide by these conditions.
    • Makers must retain the FreeStation/FreeSensor name on the equipment and run the FreeStation/FreeSensor firmware provided so that stations contribute to a global open-source database. 
    • Any third party modifications to our open source designs must also be open sourced and should maintain a high quality and robust build. 
    • FreeStation is not responsible for any loss or injury associated with your making of our stations and use of our designs.  We shall not be made liable for any consequential, incidental, indirect, special, punitive or exemplary damages resulting from the use of this hardware.
    • These materials are provided without warranty of merchantability or fitness for a particular purpose.