Guru
Joined: 05/03/2018
Location: NetherlandsPosts: 5768
| Posted: 01:52pm 16 Dec 2022 |
Yes, that one....
- do not place any of the jumpers 18/15/12/9, then it is 6dB gain.
- connect loudspeaker to LOUT+/LOUT-
- connect GND to GND
- connect L- to GND
- connect L+ to the output of the 1 transistor filter amplifier.
- connect VDD to 3.7V.
When you connect SHTDN to GND the amplifier will power down. Looks like there is a pullup on the board.
Check if that works. It should be LOUD!! This is on the edge of what the speaker can handle (the -060)
You may need a volume control potmeter between the output of the transistor and the input of the amplifier (10k or so). You need the transistor amplifier as an analog filter. You cannot drive a digital amplifier with a digital input signal. It needs analog.
Edited 2022-12-16 23:56 by Volhout