ESP32-A2DP
Split-Single-Phase-Energy-Meter
| ESP32-A2DP | Split-Single-Phase-Energy-Meter | |
|---|---|---|
| 18 | 2 | |
| 1,442 | 256 | |
| - | - | |
| 8.5 | 6.1 | |
| 4 days ago | 4 months ago | |
| C++ | C++ | |
| Apache License 2.0 | MIT License |
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ESP32-A2DP
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Retreive time & date, cellular signal strength and battery percentage information via Bluetooth on esp32
Whole thing is programmed using Arduino library in platformio and for a2dp sink im using pschatzmann library https://github.com/pschatzmann/ESP32-A2DP
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Esp8266 as a wireless audio streamer
The ESP8266 won’t work, since it doesn’t support Bluetooth. You’ll need an ESP32 and an I2S DAC. I built something similar based on this library: https://github.com/pschatzmann/ESP32-A2DP
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Synth with USB computer keyboard input and bluetooth speaker output
I want to turn a USB computer keyboard into a musical instrument where i can press a key and a sound is played on my bluetooth speaker. I have played around with https://github.com/pschatzmann/ESP32-A2DP and managed to hardcode a little tune and play it on the speaker. Unfortunately that alone already uses 80% of the esp32 flash memory and I need some more space to read the keyboard input and do a little bit of sound design on top of that. I’m looking for suggestions on a controller (combination of controllers) would be best suited for the job, with the constraint that it should have low power consumption.
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Audio and Arduino
Check out arduino-audio-tools and other libraries it can make use of, such as ESP32-A2DP. It's tailored towards ESP32 devices, but also supports the RP2040 and others.
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Outputting the AudioPLL to an external DAC
For all other i2s pinouts, I'm leaning on this GitHub-project: https://github.com/pschatzmann/ESP32-A2DP
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Sending data (wav files) from esp 32 to PC
You can use Bluetooth A2DP. This is the same standard used in Bluetooth headphones. Several implementations are available https://github.com/pschatzmann/ESP32-A2DP
- BT Transmitter from 3.5mm audio jack
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24bit 48kHz ADC and DAC recommendations for audio
A2DP library: https://github.com/pschatzmann/ESP32-A2DP
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Use of ESP32 as Bluetooth audio receiver
I recently discovered that the ESP32 could be used to receive audio via Bluetooth and since I'm using one as part of my build anyway (for controlling peripherals and LED outputs) I was thinking to just use the ESP32's onboard Bluetooth rather than a dedicated chip/module. After looking through some example code and the ESP32-A2DP library, I feel confident that this would work but is anyone able to see any caveats in doing this other than not being able to support aptx?
- esp32 to aux in
Split-Single-Phase-Energy-Meter
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Ct clamp import/export
from https://github.com/CircuitSetup/Split-Single-Phase-Energy-Meter
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IoTaWatt Open Source WiFi Electric Power Monitor
Also would be interested in this. I've looked but haven't found anything that has 2 voltage inputs (for split-phase) and 20-40 current inputs. Tempted to build it myself, basically a bunch of these[0] on a common backplane, but haven't got around to it yet
[0] https://github.com/CircuitSetup/Split-Single-Phase-Energy-Me...
What are some alternatives?
esp32-bluetooth-audio-adafruit - An ESP32 bluetooth audio receiver using an adafruit breakout
Tasmota - Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
AutoConnect - An Arduino library for ESP8266/ESP32 WLAN configuration at runtime with the Web interface
IoTaWatt - IoTaWatt Open WiFi Electric Energy Monitor
arduinoFFT - Fast Fourier Transform for Arduino
rtlamr - An rtl-sdr receiver for Itron ERT compatible smart meters operating in the 900MHz ISM band.
Mach3Controller - Android / ESP32 / ESP8266 Controller (+ coordinate display) for Mach3 CNC
ESPHome-Arduino-Port-Expander - An Arduino Port Expander for ESPHome with added Arduino Mega 2560 support
ESP_Python_Serial - A tutorial on how to make an ESP and a Python script (running on PC or a RPi) communicate via Serial and do useful stuff while communicating
InfluxDB-Client-for-Arduino - Simple library for sending measurements to an InfluxDB with a single network request. Supports ESP8266 and ESP32.
esp-idf - Espressif IoT Development Framework. Official development framework for Espressif SoCs.
PyEmVue - Python Library for the Emporia Vue Energy Monitor