Search found 23 matches

by bstolk
Sun Jun 23, 2024 6:58 pm
Forum: Hardware
Topic: ESP32-C3 not coming up if VCC below 3V.
Replies: 1
Views: 1498

ESP32-C3 not coming up if VCC below 3V.

I am using the ESP32-C3 and I power it with two AA batteries on the Vcc pin. Even though this works, I find that the ESP32-C3 will not operate under 3.0V . Which I think is strange, because I have set the brown-out level at 2.51V in the sdkconfig of my IDF project. (See picture below.) I also run th...
by bstolk
Sat Jun 01, 2024 10:21 pm
Forum: ESP-IDF
Topic: ESP_TIMER_ISR on the ESP32-C3
Replies: 1
Views: 521

Re: ESP_TIMER_ISR on the ESP32-C3

Ah, it turns out I forgot to check a box in the menuconfig
menuconfig.png
menuconfig.png (30.79 KiB) Viewed 514 times
by bstolk
Sat Jun 01, 2024 10:10 pm
Forum: ESP-IDF
Topic: ESP_TIMER_ISR on the ESP32-C3
Replies: 1
Views: 521

ESP_TIMER_ISR on the ESP32-C3

I have used both the ESP32-S3 and the ESP32-C3 (M5Stack Stamp devices.) On the EPS32-S3 I was able to create an interrupt-service-routine with this configuration: const esp_timer_create_args_t periodic_scan_timer_args = { .callback = &led_driver_scan_isr, .dispatch_method = ESP_TIMER_ISR, .arg = 0, ...
by bstolk
Sat Dec 09, 2023 7:13 pm
Forum: ESP-IDF
Topic: Inputting audio to an ESP32 from an INMP441 I2S microphone: success
Replies: 13
Views: 74139

Re: Inputting audio to an ESP32 from an INMP441 I2S microphone: success

chris_oz wrote:
Wed Apr 15, 2020 9:15 am
And that's it! You've got an array of 16-bit signed samples that are good to go.
Can you tell me... those samples you end up with, are they R,L,R,L,R,L...

Or only L?

Thanks!
by bstolk
Sat Nov 25, 2023 11:25 pm
Forum: Showcase
Topic: Voice Changer
Replies: 3
Views: 82482

Re: Voice Changer

rpiloverbd wrote:
Sun May 01, 2022 8:30 am
Interesting. Thanks for sharing. Does it support any specific microphone? Or we can use it with any microphone we want?
It has an onboard microphone.

It just needs a connection from its line out to a line in, to record or hear it.
by bstolk
Tue Jun 27, 2023 10:00 pm
Forum: ESP-IDF
Topic: Getting the device serial number from an ESP32-S3 using IDF.
Replies: 0
Views: 2083

Getting the device serial number from an ESP32-S3 using IDF.

Hello, I am using the ESP IDF with an ESP32-S3 devkit. How can I get the serial number of the device, programmatically, using IDF? Note that I did find this statement ( https://esp32developer.com/programming-in-c-c/system/serial-number ) that the esp32 does not have one, and that the MAC address sho...
by bstolk
Sun May 01, 2022 2:54 am
Forum: Showcase
Topic: Voice Changer
Replies: 3
Views: 82482

Voice Changer

https://cdn.tindiemedia.com/images/resize/17fu4ElvO6vMzyuMw0D3LzVD-c4=/p/full-fit-in/2336x1752/i/394033/products/2022-04-29T19%3A13%3A52.208Z-voice_changer_case_inside..jpeg?1651235288 I built a voice changer with the esp32-devkitc-32e, using an i2s mic and i2s dac. It can make you sound like Kylo....
by bstolk
Sat Apr 16, 2022 6:40 pm
Forum: Showcase
Topic: Stock Ticker
Replies: 1
Views: 5267

Stock Ticker

A Desk-side Stock Ticker using the ESP32-C3 (on an M5Stack Stamp-C board.) https://pbs.twimg.com/media/FQKNz5zVgAQFFqn?format=jpg&name=large It scrolls the stocks from the DOW-30 index. Video of the device in action: https://www.reddit.com/r/arduino/comments/u53kv4/stock_ticker_with_live_quotes_from...
by bstolk
Mon Apr 11, 2022 7:01 pm
Forum: ESP32 Arduino
Topic: Mimimum sample rate for I2S.
Replies: 0
Views: 1814

Mimimum sample rate for I2S.

I am trying to debug some I2S code I have, and thought I would turn down the sample rate really low. But the ESP32 does not seem to support low bit-rates? Because if I set it to 2400Hz, the samples are clocked much faster, then when I set it to 2434 Hz? What is the lowest sample rate that the ESP32 ...
by bstolk
Tue Mar 29, 2022 8:46 pm
Forum: ESP32 Arduino
Topic: Saving SSID+passwd after WPS procedure.
Replies: 3
Views: 6298

Re: Saving SSID+passwd after WPS procedure.

Ah, Ok, I managed to do this. You can access credentials (after connecting) as:

Code: Select all

WiFi.SSID();
WiFi.psk();
And I write them to flash, using the SPIFFS interface.