All Questions
3
questions
2
votes
1
answer
2k
views
Change ESP8266 I2S pins
On ESP8266 the default pins for I2S are:
Data bits (SD) = GPIO3/RX0,
Data bit-clock (SCK) = GPIO15,
Word select (WS) = GPIO2/TX1
However in my application Im using these pins for another purpose. Is ...
- 21
1
vote
1
answer
4k
views
I2S audio interface - sync of MCLK and LRCLK signals
I plan to use IC AK4430, an I2S digital interface sound output chip, to be connecte to an ESP-07 Wifi module via 3 wires (BITclk, LRclk and DATA). But the IC also require an input signal that they ...
- 657
9
votes
2
answers
3k
views
Low pass filter with two capacitors?
I'm trying to drive a speaker from an ESP8266 for a project, and found an article suggesting (ab)using I2S as a 1-bit Pulse Density Modulation DAC. Apparently that's pretty noisy, so the article gives ...
- 193