This blog is written by Hans Crijns. I’m an entrepreneur, electrical engineer and developer. In this blog, I want to share some of the things I learned about (Arduino) electronics, so others can benefit from my journeys as well. During the day, I develop electronics for my own projects (like GrowGuard, Moistly and Homeguard) and for other companies and organisations (often with wifi, Ethernet, Bluetooth or GSM/GPRS). Hope you have fun and learn something while browsing this page…

BTW  If you need to have a product developed and need help: We do (a limited amount) of projects for others. Feel free to contact me at hans@cloudsensor.us


  1. Hans,

    Love your start up story. Makes for great inspiration.

    Do you have an email where I can reach you offline to discuss a new opportunity?

    Thank you,

    1. Hi Gautam,

      You can directly reach me at hans@cloudsensor.us

      All the best,


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