Azura asked 4 years ago
I am following the online course “Learn ESP32 with Arduino IDE“.
1: I have the WiFi client working correctly, activating red and blue LED strips √
2: I have the complete system running on a 5Vdc battery pack √
3: The voltages with or without the PC USB port connected are perfect even the ESP32 3.3Vdc is good √
4: Disconnect the PC USB port and the ESP32 continues to appear ok, LEDs are on and the web page is good √
5: However requesting an action on the web page to select the relevant GPIO output to change does not work anymore ×
6: Activating the ESP32 on board push buttons “boot and enable” does not improve the issue ×
7: Reconnecting the PC USB cable to the ESP32, within one second the web page works again ?
Any thoughts from anyone, I am using the script as per the “Learn ESP32 with Arduino IDE“ course. It works 100% while connected to the PC, stops working when the USB connection is disconnected, yet the 5Vdc battery pack is providing a very smooth continuous power source to the ESP32 and associated circuitry.
Sara Santos Staff answered 4 years ago
Hi.
How does your battery pack look like?
How are you connecting your 5V battery pack to the ESP32?
Can you try a “blinking LED” project with the battery pack and see if it works (to try to find if the problem is related to using the Wi-Fi or to the fact that a battery is powering it)?
Regards,
Sara
Steve Mercer answered 4 years ago
What is the max current the 5V battery pack can supply? Generally the USB port can supply up to 2A. Wifi does use a lot of current and the battery pack may not have enough to power it.
Azura answered 4 years ago
Sara and Steve; thank you both for reviewing this question. I have tried various power supplies it is not related to supply capacity, the battery pack can provide 2.4A.
The test is as follows;
1: connect battery pack (or any power supply) via the USB port to the ESP32 and all is perfect.
2: connect battery pack (or any power supply) via the ext 5Vdc pins on the ESP32 and the programme fails to update as it should.
3: All supply voltages are perfect in either configuration, ie 5Vdc and 3.3Vdc, perfect.
4: I am activating two LEDs, one red and one blue from the two GPIO’s as per the programme, very small load.
I have a short video and wiring table photos to support this text if these assist to clarify?
Sara Santos Staff answered 4 years ago
Hi Taylor.
Can you share the photos?
To share a picture, share a link to google drive, dropbox, Imgur or another service.
Regards,
Sara
Azura answered 4 years ago
Link to supplier ESP32.
Z6385A ESP32 WiFi-Bluetooth Module & Interface Board – Altronics
Sara Santos Staff answered 4 years ago
I’m not familiar with that specific board model.
(I answered your question via email).
Regards,
Sara