Hi guys,
For a project I am wanting to flash a LED in sync with the speaker output of the BY8301-16P sound module. https://www.aliexpress.com/item/1005001831389901.html
https://usermanual.wiki/Document/edmp320manual20V12.1195164350
I have tried connecting an LED directly across the speaker terminals of the small 56mm speaker I am using and that works but I want the light to be brighter. The voltage at the speaker is +/- 3V
I then tried using a BC557 transistor as I had one lying around. I connected 5V to a resistor (tried 56 and 10 ohm) then LED to the emitter. Collector to ground. Base to one of the speaker pins on the sound module. It worked again but didn’t seem much brighter. I used my small oscilloscope (PokitMeter) and it only showed about 15mA.
The LED I am using has a typical forward current of 30mA. https://www.jaycar.com.au/white-3mm...os=1&queryId=f0f1e577dfcaf8d40bb40eaf51cba14b
Am I approaching this the right way? I could use multiple LEDs if I need to.
Thanks in advance for any help!
For a project I am wanting to flash a LED in sync with the speaker output of the BY8301-16P sound module. https://www.aliexpress.com/item/1005001831389901.html
https://usermanual.wiki/Document/edmp320manual20V12.1195164350
I have tried connecting an LED directly across the speaker terminals of the small 56mm speaker I am using and that works but I want the light to be brighter. The voltage at the speaker is +/- 3V
I then tried using a BC557 transistor as I had one lying around. I connected 5V to a resistor (tried 56 and 10 ohm) then LED to the emitter. Collector to ground. Base to one of the speaker pins on the sound module. It worked again but didn’t seem much brighter. I used my small oscilloscope (PokitMeter) and it only showed about 15mA.
The LED I am using has a typical forward current of 30mA. https://www.jaycar.com.au/white-3mm...os=1&queryId=f0f1e577dfcaf8d40bb40eaf51cba14b
Am I approaching this the right way? I could use multiple LEDs if I need to.
Thanks in advance for any help!