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Home/module

volt.tech Latest Questions

Alex thomas
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Alex thomas
Asked: December 10, 2022In: Wireless Connectivity

How to Power ESP32 Devkitc v4 Module from Regulated 5v?

  • 0

Hello, I’ve lipo battery connected to tp4056 (with protection), and it’s connected to a 5v output boost module. How can I connect it to the board? And also can I have a USB connection to the board without burning the ...Read more

Hello, I’ve lipo battery connected to tp4056 (with protection), and it’s connected to a 5v output boost module. How can I connect it to the board? And also can I have a USB connection to the board without burning the module?

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devkitcesp32lipomoduletp4056usb
  1. nidhi singh
    Added an answer on December 14, 2022 at 10:17 am

    Hii, From boost converter (u really do not need it but anyway.) to ESP32- wroom 5v pin (from photo bottom left pin) and from charge- to GND (ANY OF THEM). Can connect a USB to the ESP32 WROOM directly (with this connection in place, no need to disconnect) and flash any firmware you want, also disconRead more

    Hii, From boost converter (u really do not need it but anyway.) to ESP32- wroom 5v pin (from photo bottom left pin) and from charge- to GND (ANY OF THEM).

    Can connect a USB to the ESP32 WROOM directly (with this connection in place, no need to disconnect) and flash any firmware you want, also disconnect the USB, and if the battery is full and it’ll work.
    Can also connect a USB to the TP4056 for charging WHILE it feeds the ESP32.

    You really do not need the Boost since the TP4056 will output3.7 v and you have a 1000mah (milli amps hour) battery which will allow the ESP32 to work for a good while (depending on what u are doing etc) before recharging. In this configuration just connect the OUT to3.3 v (top left) and OUT- to any GND pin.
    But u will need a USB connection to load any firmware and later disconnect it and let the battery feed the ESP32.

    Enjoy.

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  • 1 Answer
Answer
vikas Nagpal
  • 0
vikas Nagpal
Asked: October 26, 2022In: Wireless Connectivity

ESP32-C3-MINI-1-H4 RTC External Power and Chip Enable?

  • 0

Hello, I notice the supply for the RTC is also connected to the general 3V3 supply on the schematic for the ESP32- C3-MINI-1-H4 module. If I supply3.3 V power to the ESP32- C3-MINI-1-H4 but have the enable line low, so chip ...Read more

Hello, I notice the supply for the RTC is also connected to the general 3V3 supply on the schematic for the ESP32- C3-MINI-1-H4 module.

If I supply3.3 V power to the ESP32- C3-MINI-1-H4 but have the enable line low, so chip impaired, will the RTC keep on running if it has been set before?

Or for the RTC to remain running but the chip powered down will I need to produce my own layout to break out the RTC 3V3 pin and thus I won’t be suitable to use the ESP32- C3-MINI-1-H4 module?

Thanks

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chipesp32esp32c3mini1externalpowermodulertc
  1. ashishgawade
    Added an answer on October 28, 2022 at 9:46 am

    Neither. The ESP32-C3 needs to have all 3.3 V power pins powered at the same time, it's not possible to power the RTC domain independently. Disabling the chip using EN will shut down the wholeness of the chip, including the RTC. To make use of the RTC in low-power mode, you need to use software to pRead more

    Neither. The ESP32-C3 needs to have all 3.3 V power pins powered at the same time, it’s not possible to power the RTC domain independently. Disabling the chip using EN will shut down the wholeness of the chip, including the RTC. To make use of the RTC in low-power mode, you need to use software to put the chip into a deep sleep.

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Answer
vikas Nagpal
  • 0
vikas Nagpal
Asked: September 13, 2022In: Wireless Connectivity

Connecting ESP32 Cam to a Multimeter?

  • 0

I would like to know if it was possible ever to keep connected the micro usb of the esp32- cam- mb to load the module and in the meantime check the consumption( Ampere) from a multimeter. I tried to connect the multimeter in any way but failed Thanks

I would like to know if it was possible ever to keep connected the micro usb of the esp32- cam- mb to load the module and in the meantime check the consumption( Ampere) from a multimeter.

I tried to connect the multimeter in any way but failed
Thanks

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esp32esp32-cam-mbmodulemultimeter
  1. ashishgawade
    Added an answer on September 20, 2022 at 5:03 pm

    Sure. Take a USB lead, cut off the external isolation, find the red wire, cut it in two, and connect the multimeter in between. Make sure the internal resistance/ burden voltage of your multimeter isn't too high if the voltage drop of the multimeter is too high, your ESP32 may brown out. ( You can tRead more

    Sure. Take a USB lead, cut off the external isolation, find the red wire, cut it in two, and connect the multimeter in between. Make sure the internal resistance/ burden voltage of your multimeter isn’t too high if the voltage drop of the multimeter is too high, your ESP32 may brown out. ( You can try switching to the 10A range when you suppose that happens.)

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  • 1 Answer
Answer
vsharma
  • 1
vsharma
Asked: August 22, 2022In: Wireless Connectivity

How SPI DMA in ESP32-S2-WROOM

  • 1

How we’re implemented SPI poling in ESP32- S2- WROOM module. But now I need to apply SPI DMA for Transmit and admit. is ESP32- S2- WROOM module supports SPI DMA? actually we searched in github, I find SPI DMA stack ...Read more

How we’re implemented SPI poling in ESP32- S2- WROOM module. But now I need to apply SPI DMA for Transmit and admit.
is ESP32- S2- WROOM module supports SPI DMA?
actually we searched in github, I find SPI DMA stack but in that no DMA related functions.

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dmaesp32moduletransmit
  1. Techworld
    Added an answer on August 24, 2022 at 9:39 am

    Given that you're using the ESP-IDF SPI driver and assign a DMA channel to the host driver when initializing it, you're already using DMA. The driver will use DMA for data transfers automatically.

    Given that you’re using the ESP-IDF SPI driver and assign a DMA channel to the host driver when initializing it, you’re already using DMA. The driver will use DMA for data transfers automatically.
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Answer
Anonymous
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Anonymous
Asked: May 27, 2022In: Wireless Connectivity

LoRa module communication failure issue

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When two LoRa modules cannot communicate with each other, what are the steps for failure detection?

When two LoRa modules cannot communicate with each other, what are the steps for failure detection?

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communicationconnectivity issueloramodulerenesas
  1. nakhtar
    Added an answer on May 27, 2022 at 5:59 pm

    Hi, First check whether the SPI communication is successful, the successful sign is that the version value of the read chip is 0x12, the DIO0 pin is responsible for notifying the MCU that the reception is completed and check whether the DIO0 pin configuration is normal. The configuration parametersRead more

    Hi,

    First check whether the SPI communication is successful, the successful sign is that the version value of the read chip is 0x12, the DIO0 pin is responsible for notifying the MCU that the reception is completed and check whether the DIO0 pin configuration is normal. The configuration parameters of LoRa should be consistent, including frequency, spreading factor, bandwidth, coding rate, preamble length, frequency hopping enable, syncword, and low-rate optimization; if one of the above parameters is different, communication cannot be performed.

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