Search found 7 matches

by o.copleston
Tue Mar 31, 2020 12:21 am
Forum: Hardware
Topic: ESP32 WROVER MP3/AAC/(IP Audio Stream) Decoding, digital Audio Filtering and SPI Colour Display control
Replies: 7
Views: 1698

Re: ESP32 WROVER MP3/AAC/(IP Audio Stream) Decoding, digital Audio Filtering and SPI Colour Display control

Hi psychoacoustic,

I love the look of the visualiser you created. I'm working on somthing similar but instead outputting the data to LEDs.
I'd really interested to hear how you implimented a Constant-Q transform if it's something you'd be up for sharing.
by o.copleston
Tue Mar 10, 2020 10:12 pm
Forum: ESP32 MDF
Topic: ESP32 Mesh network for sharing audio
Replies: 8
Views: 3641

Re: ESP32 Mesh network for sharing audio

This feature of receive audio data from bluetooth and then broadcast to other mesh nodes is not supported yet. But we have exploit a related feature: bluetooth beacon, it can be used in sales promotion, and the feature will soon be released. Hi Sam. I'm working on a project that might potentially r...
by o.copleston
Mon Mar 09, 2020 11:23 pm
Forum: ESP32 MDF
Topic: How can I trigger the creation of a new mesh network, once a mesh network is full?
Replies: 1
Views: 1850

Re: How can I trigger the creation of a new mesh network, once a mesh network is full?

Until someone chimes in with a better solution, here's how I'm currently solving this problem. My main issue here is that the core mesh firmware is closed source and so I'm having to rely on the limited callback returns. In my event loop event_loop_cb , I create the following case: // If a network i...
by o.copleston
Thu Feb 27, 2020 12:26 am
Forum: ESP32 MDF
Topic: How can I trigger the creation of a new mesh network, once a mesh network is full?
Replies: 1
Views: 1850

How can I trigger the creation of a new mesh network, once a mesh network is full?

Context: I have a few hundred devices which are currently connected to a single access point. I'm sending commands, files and OTA updates to these devices, but because they are all connected to the same access point there is a lot of contention and other network issues. My goal is to use ESP-MDF to...
by o.copleston
Fri Sep 20, 2019 10:43 am
Forum: ESP32 IDF
Topic: Parrallel compiling with CMake
Replies: 3
Views: 530

Parrallel compiling with CMake

With the old GNU Make build system, compiling my projects with

Code: Select all

make -j8
would drastically reduce my build time from minutes to seconds. How can I do this with the idf.py CMake build system?
by o.copleston
Mon Sep 16, 2019 9:42 pm
Forum: General Discussion
Topic: Maximum theoritical speed of ESP-NOW?
Replies: 0
Views: 250

Maximum theoritical speed of ESP-NOW?

For context: I'd like to stream video from one ESP-32 with a Camera to another which has an LCD display. I've figured that ESP-NOW is probably the best protocol to it's lack of overhead.

What's the maximum speed that I could get out of ESP-NOW?
by o.copleston
Fri Aug 09, 2019 8:51 pm
Forum: ESP32 IDF
Topic: Advice using FFT on the ESP32 - ESP-DSP Component
Replies: 3
Views: 664

Advice using FFT on the ESP32 - ESP-DSP Component

I have been developing a sound visualisation project using the FFT function from the ESP-DSP component . Audio is captured using an INMP441 which is then passed to the FFT function. I am getting great data for higher frequencies but low frequency input cause a bunch of unwanted data to appear at hig...

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