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Years ago, people figured out Raspberry Pi’s can accidentally double as FM radio transmitters without a need for any radio front-end (if we don’t count a single jumper wire working as an antenna). They achieved this by tying a GPIO pin to a software-controlled clock around 100 MHz to modulate audio. This created a low-powered FM radio transmitter. Due to the pin producing a square wave instead of a neat sine wave, it also emitted weaker harmonics at 300MHz, 500MHz, etc., but any basic FM radio could pick up the audio. I wondered if a similar feat could be achieved by much less powerful Raspberry Pi Pico microcontrollers.。关于这个话题，搜狗输入法下载提供了深入分析
Follow topics & set alerts with myFT。WPS下载最新地址是该领域的重要参考
One of the most important changes will be whom Ellison names editor-in-chief, he adds, a selection that will set the tone for what follows.，更多细节参见wps下载