Search found 36 matches

by czuvich
Wed Feb 27, 2019 2:32 pm
Forum: ESP32 Arduino
Topic: Suspend Main Loop
Replies: 2
Views: 399

Suspend Main Loop

Is there a way to suspend the loop() completely? I will be using tasks and timers to run my Arduino code.
by czuvich
Thu Jan 17, 2019 3:29 pm
Forum: ESP32 Arduino
Topic: ESP WROVER KIT V3
Replies: 1
Views: 1130

Re: ESP WROVER KIT V3

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...
by czuvich
Thu Jan 17, 2019 1:59 am
Forum: General Discussion
Topic: WROVER Dev Kit 4.1 LCD and SD Not Working
Replies: 1
Views: 342

WROVER Dev Kit 4.1 LCD and SD Not Working

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...
by czuvich
Mon Dec 31, 2018 9:17 pm
Forum: ESP32 IDF
Topic: Powering ESP32 WROVER Dev Kit with Batteries
Replies: 4
Views: 520

Re: Powering ESP32 WROVER Dev Kit with Batteries

Thank you for both the recommendation and data sheets!
by czuvich
Mon Dec 31, 2018 5:10 pm
Forum: ESP32 IDF
Topic: Powering ESP32 WROVER Dev Kit with Batteries
Replies: 4
Views: 520

Re: Powering ESP32 WROVER Dev Kit with Batteries

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...
by czuvich
Mon Dec 31, 2018 12:25 am
Forum: ESP32 IDF
Topic: Powering ESP32 WROVER Dev Kit with Batteries
Replies: 4
Views: 520

Powering ESP32 WROVER Dev Kit with Batteries

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...
by czuvich
Sat Dec 29, 2018 7:18 pm
Forum: ESP32 IDF
Topic: Connect to sleeping android phone
Replies: 5
Views: 997

Re: Connect to sleeping android phone

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...
by czuvich
Fri Dec 28, 2018 4:05 am
Forum: ESP32 IDF
Topic: Connect to sleeping android phone
Replies: 5
Views: 997

Re: Connect to sleeping android phone

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...
by czuvich
Wed Dec 26, 2018 8:14 pm
Forum: ESP32 Arduino
Topic: WROVER SPI RAM Findings
Replies: 2
Views: 492

Re: WROVER SPI RAM Findings

Thanks fivdiAtESP32. Valid points with ISR's.
by czuvich
Tue Dec 25, 2018 5:45 am
Forum: ESP32 Arduino
Topic: WROVER SPI RAM Findings
Replies: 2
Views: 492

WROVER SPI RAM Findings

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...

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