[Udo] decided to build a clock using the DCF77 radio module seen above. This of course has been done before: the hardware draws a clock signal from the atomic clock in Braunschweig, Germany.

and wave your hand in front of the module. Again, you can see the signal activity through the red LED (if the receiver can catch the transmitted signals reflected by your hand) and the same pulse ...

Decoding these signals can allow you ... using the same radio module and using Audacity for signal analysis. Finally, [Joonas] brought out the big guns, hooking up a Picoscope digital oscilloscope ...

LED1 indicates the IR signal activity but may be omitted together ... value for that single button — that’s all! /* * Infrared Decoder/Encoder * Hardware: Arduino Nano & DIY IR Sniffer Module * ...

Decoding an unknown GNSS pseudorandom noise (PRN) code can be rather easily done using a high-gain steerable dish antenna as was used, for example, in determine the BeiDou-M1 broadcast codes before ...