Sign Up to our social questions and Answers Engine to ask questions, answer people's questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people's questions & connect with other people.
Volt.Tech
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
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?
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
Read less
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.
See lessI 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
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.)
See lessHow 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.
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.
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?
Read less
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.
See less
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.
See less