Is there a way to suspend the loop() completely? I will be using tasks and timers to run my Arduino code.

I know this is an older thread; however, I have a WROVER v4.1, and I can't seem to get the SD Card to initialize with the LCD. I desoldered R167 which allows me to display the LCD while a card is inserted. Did you happen to get your project working? If so, do you mind sharing? I'm able to read/write...

I am trying to get the WROVER Dev Kit LCD and SD to work together. I removed R167, and I can now show results in the LCD even if an SD Card is inserted; however, when I try to initialize the SD card it fails to mount (see error below). If I initialize ONLY the SD, then the SD works fine. Is there an...

Thank you for both the recommendation and data sheets!

Thanks for the response! I guess I was looking for specifically the barrel jack for the WROVER Dev Kit 4.1. The diagram says 5V input; however, I just wanted to know if 4 NiMH would do the trick. I can't find any documentation that says there's a regulator behind the barrel jack. I can add another A...

I'll be using my ESP32 WROVER v4.1 Dev kit to demonstrate a PoC for my project. I'll be using both WiFi and BLE, SD, and LCD. I only need it to last about half a day to demonstrate. I have a USB to Wall plug for when I can connect it to the wall; however, I'd like to demonstrate battery capability a...

It’s possible while an Android device is in doze mode the BLE server is only available to “certified” clients. I think this question is better suited on StackOverflow for connecting to Android in Doze. It may depend on the version of Android, hardware certification, etc. If you’ve got some Android d...

Have you tried using one of the example clients in the ESP32 BLE folder and connecting to the device? As long as you don’t require any custom services on the Android side then I’d try that. You could even try an app on your phone or tablet to connect to the android device. The only unknown for me is...

Thanks fivdiAtESP32. Valid points with ISR's.

I thought I would post my findings using the WROVER. I purchased the WROVER since I needed to use both WiFi and BLE. The extra RAM would help with larger JSON calls and in memory models using dynamic memory. Even after purchasing the WROVER I was still getting memory exceptions. Here’s what I discov...