CE Certification
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A few years back I looked into getting CE certification for a media-player hardware project, and the funny thing was that in Germany there is no place to apply for it. TüV can test it for you if you want them to - and you might get a nice certificate to hang up on the wall, but that doesn't mean that someone will be stopped from suing you if the device causes interference or eats their socks. I talked to a lawyer and a business owner in the industry of producing hardware, and what they told me was easily confirmed by more than just wikipedia:

Die CE-Kennzeichnung ist daher kein Qualitätssiegel, 
sondern eine Kennzeichnung, die durch den Inverkehrbringer 
in eigenem Ermessen aufzubringen ist und mittels der er zum 
Ausdruck bringt, dass er die besonderen Anforderungen an
 das von ihm vertriebene Produkt kennt und dass selbiges 
diesen entspricht.[1]

[1] https://ec.europa.eu/growth/single-market/ce-marking_de

So congratulations.

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That also reflects what we have learned so far: Going to a lab and making measurements that show you are in compliance with CE is only for you to have proof in case you need in court.

Bertl added a subscriber: Bertl.Feb 21 2018, 4:21 PM

CE is mandatory for certain classes of equipment which we might or might not fall into, depending on the setup.

Low Voltage Electrical Equipment
The "Electrical Equipment" means any equipment designed for use with a voltage rating of between 50 and 1000 V for alternating current (A.C.) and between 75 and 1500 V for direct current (D.C.). Therefore, it is called often "Low Voltage Electrical Equipment" which includes the vast majority of electrical equipment in everyday use.

So as long as we stay below 50V AC and 75V DC we are fine ...

Radio Equipment
A "radio equipment" means a product, or relevant component thereof, capable of communication by means of the emission and/or reception of radio waves utilising the spectrum allocated to terrestrial/space radiocommunication.

... and as long as we don't use WiFi or Bluetooth or produce unexpected emissions, we are good without too.


These two symbols are good for consumer trust in the project. Having beta-testers testing it around the world and confirming that it doesn't cause problems for them is also a chain of evidence that suggests due-diligence.