The Aleutia E2 Mini PC is primarily designed for use in extreme environments with scarce access to electricity, but is just as at home on an office desk or for personal use to browse the internet, for word processing, Excel spreadsheets, etc.
Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments.
pdf mit vielen schaltungsbeispielen für arduino: motoren, transistoren, piezo sensoren...
liste von open harware gadgets und zeug zum selber löten
At a street price of about USD 20 to USD 25, they are undoubtedly the most capable low-cost SDR hardware that can be bought. So now there is really no more excuse for anyone to not learn gnuradio. You don't have to buy a USRP, not even a FCDP or an OsmoSDR: A USD 20 device is all that's needed for receiving signals like GSM, GMR, DECT, TETRA, APCO25 and many others.