Pi Pico Rx – A crystal radio for the digital age?
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Pi Pico Rx – A crystal radio for the digital age?
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Re: Pi Pico Rx – A crystal radio for the digital age?
#2Very cool write up! I'm amazed that it's running on AAA batteries.
The introduction to SDR (software defined radio) is much appreciated.
Edit: defined, not designed
Re: Pi Pico Rx – A crystal radio for the digital age?
#3Very cool write up! I'm amazed that it's running on AAA batteries. The introduction to SDR (software defined radio) is much appreciated. Edit: defined, not designed
software defined radio
Re: Pi Pico Rx – A crystal radio for the digital age?
#4That's really cool, but as long as AM exists, crystal radio will be crystal radio
Re: Pi Pico Rx – A crystal radio for the digital age?
#5I was looking at digital fm chips a few years back that specifically pick up digital fm and more importantly to my project at the time digital text that stations broadcast.
Deviation aside this is a cool project and impressive as someone said that it runs on alkaline batteries.
Re: Pi Pico Rx – A crystal radio for the digital age?
#6Indeed very simple and within reach of a beginner.
Another illustration how RPi 2040 PIO is an exceedingly helpful thing. Without it, the RF-related circuits would have to use either bit-banging, or a bunch of small discrete components.
Re: Pi Pico Rx – A crystal radio for the digital age?
#7The staggered quadrature sampling trick also comes up in the Crank-Nicholson method for solving e.g. the Schrodinger equation, optics etc.
Re: Pi Pico Rx – A crystal radio for the digital age?
#8Was looking into Meshtastic recently, as a means to have basic communication in disaster situations (hurricanes, war, etc.) but haven't picked a device yet. Any recommendations?
Re: Pi Pico Rx – A crystal radio for the digital age?
#9Was looking into Meshtastic recently, as a means to have basic communication in disaster situations (hurricanes, war, etc.) but haven't picked a device yet. Any recommendations?
I think the Meshtastic site mentions a few boards, but it probably depends too on what features you want. I picked up a couple Heltec boards with tiny displays to tinker with, though haven't spent enough time there yet.
Re: Pi Pico Rx – A crystal radio for the digital age?
#10I was looking at digital fm chips a few years back that specifically pick up digital fm and more importantly to my project at the time digital text that stations broadcast. Deviation aside this is a cool project and impressive as someone said that it runs on alkaline batteries.
I’ve been looking at using the RDA5807M ic to handle the RDS and audio output. Seems to be pretty simple and cheap.