Comments (10)
Hello everybody!
I realized the ESP-radio with only one alimentation.
After some research I found out a solution in this link to eliminate the noise:
http://www.enaos.net/P1220.aspx?IdPer=485253
I realized this modification here:
https://user-images.githubusercontent.com/37144462/38781681-433bbce2-40e9-11e8-97a4-6c7ad9ce619a.png
The capacitance of 47uF is soldered directly to the VREF-pin of the amplifier an to the GBUF-line at the other side. This small modification eliminates the noise completely!
I suppose that you can adapt this modification too to other amplifier.
Nice projects ESP-radio and ESP32-radio!!!!
from esp32-radio.
I have not tried it myself, but you may connect the L and R signals of the headphone connector through 10 microFarad capacitors to your amplifier. Do not use the common pin of the headphone connector.
Another possibility is to us a 5 volt DC-DC converter to isolate the amplifier from the VS1053. Search for "B0505S" on webshops.
I have some converters ordered and I will test it in the coming days.
from esp32-radio.
I have tested the solution with the DC-DC converter and it works.
from esp32-radio.
from esp32-radio.
I have tested the solution with the DC-DC converter and it works.
Do you use the DC-DC converter for VS1053 or for the amp?
The B0505S which comes in 1W or 2W versions seems to be a bit underpowerd for an amp.
from esp32-radio.
I tested it for the amp. 1 watt is a lot of noise, knowing that 1 microwatt can keep you out of sleep.
But maybe it's better to use the 2 Watt converter for the ESP and the VS1053. The idea is to get the power supply of the amp separated from the rest.
from esp32-radio.
I want to use one of the cheap PAM8403 2x3W D Amp modules. So the dc/dc converter really seems to be underpowerd for the amp.
Which amp du you use?
from esp32-radio.
I use the same amplifier. See my comment "But maybe it's better to use the 2 Watt converter for the ESP and the VS1053."
from esp32-radio.
Hello again!
I made a mistake with the first link. Please use this link here:
http://esp8266-server.de/Internetradio.html
from esp32-radio.
Hello everybody!
I realized the ESP-radio with only one alimentation.
After some research I found out a solution in this link to eliminate the noise:
http://www.enaos.net/P1220.aspx?IdPer=485253
I realized this modification here:
https://user-images.githubusercontent.com/37144462/38781681-433bbce2-40e9-11e8-97a4-6c7ad9ce619a.pngThe capacitance of 47uF is soldered directly to the VREF-pin of the amplifier an to the GBUF-line at the other side. This small modification eliminates the noise completely!
I suppose that you can adapt this modification too to other amplifier.
Nice projects ESP-radio and ESP32-radio!!!!
The large capacitor sorted out my issue with PAM8403 connection too, thank you!
from esp32-radio.
Related Issues (20)
- Few qeustions before building HOT 4
- Audio Transformer HOT 12
- OLED SSD1306 128x32 support HOT 1
- Adding LCD screen created choppy audio HOT 5
- Newbie Help HOT 45
- ESP32 Won't Connect To My WiFi AP HOT 9
- Just a wish, analog line in / aux- in
- SD card unable to play. HOT 6
- How to compile in Visual Studio? HOT 2
- Adding ability to read pictures from USB
- Problem in compiling. HOT 1
- stations select
- IR receiver does not work on long press
- Maximum line length in config file - 150
- Choppy audio debug suggestions?
- Audio not working vs1053 HOT 8
- Can be combined with FM
- ESP32 Edzelf Radio HOT 11
- Dab dab+ remote control support
- Arduino IDE compiling error in aac_decoder.cpp library HOT 2
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from esp32-radio.