Hello,
it should be possible to power the ESP from a LIPO. They have often discharge rates of about 20 C/H (C = capacity in AH). But you need a voltage regulator with a very low drop.
I'm using the TPS73733. Maybe you can think about a switching regulator, but I don't know if this is the best choice ...

Hello,
thanks for the fast reply. If I change the PIN Mux the PWM disappear, but I still have some random noise on the pin. I try to get a closer look with a oscilloscope on the pin.

Kind regards

Peter

Hi,
I have have tried to MUX it to a fix value. Unfortunately there is still noise on the output. (If I don't initialize the PWM there is no noise.)
Is there no way to deinitialize the Pin in a fast way?
Regards
Peter

Hello,
I run the LED_PWM as an Sound output.
Due the noise I want to disable the Output, if I don't play any sound. How can I disable it?

REG_CLR_BIT(GPIO_PIN_MUX_REG[18], SLP_OE);
or this
gpio_set_direction(LS_IO, GPIO_MODE_INPUT);

doesn't work. I'm still able to play a sound via PWM.
Can anybody ...

Hello Rudi,
thanks for testing.
But if I see it right you have tested it with a .c file. My problem only occurs when I use the .cpp ending.
If I don't have the extern "C" before the app_main() it don't compiles.
(I think the reason is that this function is called by a C function.)
Unfortunately it ...

Hello together,
I want to port the Infrared Nec example to CPP. I have a linker problem when I include the xRingbufferReceive function.
I have made a small example with the Hello World program.




#include <stdio.h>
#include "esp_err.h"
#include "esp_log.h"
#include "esp_system.h"
#include "nvs ...

Hello Jones,
I mean the technical reference not the datasheet. Page 157.
I have look a little bit closer and just seen, that the upper limit can only be set in bits (2^n). So I think you have to work with the divider (It has 14Bit + 4 Fractial Bits so in total 18 Bits). You can use the normal ...

Hello Jones,
I think the PWM Peripheral is the best way to generate pulses like this (I think you need a lot of pulses with same frequency). I would offload things like this from the CPU because switching into an interupt and toogle a pin is very time consuming for the effect you have. If I see it ...

Hello,
are there any news about this topic? This mode sounds very interesting for me because I don't need a really high datarate but a high range.
Is it compatible with normal routers? (I don't think so.)
Regards
Peter

Hello kolban,
thank you for this snippet. It looks like there is a little bug. You have to change the MSB and LSB (particularly in the RGB set function).
I do this in that way (it is maybe not the best but it works):


void WS2812::setPixel(uint16_t index, uint8_t red, uint8_t green,
uint8_t blue ...