liaifat85 wrote: ↑

Wed Mar 13, 2024 2:07 pm

Sounds like a manufacturing defect or an error with the soldering.

I checked soldering and it is looking fine. But maybe its default design.

You seem to have the ESP-C3-13 module, which comes with a PCB antenna. To connect an external antenna, you will have to somehow 'disconnect' the PCB antenna, and probably modify the matching network to be compatible with your external antenna. Or, get an ESP-C3-13U. I tested short-circut positive a...

Hi, I am using ESP-NOW to communicate two ESP circuits. My aim is to get more gain trying to attach external antenna to AiThinker ESP-C3-13 Node MCU kit. Module is coming not soldered male interface on board. Therefore I soldered an IPEX connector to board. After the soldering connector I attached t...

Hi, I am developing a circuit based on ESPC3-13 module. I faced with a problem in deep sleep task. The problem that I faced; GPIO17 never turn to LOW state after I set it to HIGH at deep sleep mode. But if I set GPIO17 LOW at the beginning and do not set state to HIGH, pin goes LOW without any probl...

Hi folks,

The reason is ADC_ATTEN_DB_11 0 mV ~ 2500 mV.

Best regards,

Orkun Gedik

Hi,

I am working on a project running on ESP-C3-13 module that read analog data from voltage splitter. The value is reading 4096 even voltage level is at 2.95v. I assure you that voltage level at pin is correct. What may cause the problem?

Thank you for your support.

Orkun Gedik

I think you're misreading the datasheet, for a Vo of 3.3V the typical dropout only is 350mA. 800mA is for an 1.8V-or-less LDO. What could be happening is that you run into the internal resistance of the battery itself. In that case, moving the cap to the battery side may help; that keeps a little b...

I assume that you have looked at the battery voltage and it stays above 3.3 + 0.36(HT7833 typical drop out voltage)= 3.66 volts during this time. The HT7833 has a max drop out voltage of 0.5 volts at 3.3 volt output. Hi mgsecord62, You assumption is looking logical. But there must be a voltage drop...

ESP_Sprite wrote: ↑

Thu Oct 26, 2023 2:00 pm

What is your physical hardware like and how are you measuring?

I am measuring on C2 SMD capacitor.

Hi, I designed a sensor based on ESP32-C3-13 module and sending sensor value over ESPNOW to another ESP32-C3-13. I am facing ~600 - 700mV voltage drop during the send process. In order to solve this problem I attached a 1000uF SMD capacitor close to ESP module. But still having same voltage drop on ...