Search found 23 matches

by kmmaran
Tue Feb 11, 2020 5:57 am
Forum: ESP32 IDF
Topic: ESP32 2 boards (AP and Station) WiFi COMM Toggle LED in ESP-IDF.
Replies: 0
Views: 294

ESP32 2 boards (AP and Station) WiFi COMM Toggle LED in ESP-IDF.

Hi All, I need to toggle LED of one ESP32 board (STATION) from another ESP32 board (AP) using WiFi and vice versa, in esp-idf and no arduino. I am able to do it via a web page with ON and OFF button but I don't want to use a web page. For example if one EP32(AP) board switch toggled the other ESP32 ...
by kmmaran
Thu Dec 12, 2019 1:57 am
Forum: Hardware
Topic: Esp32 with LED Strip and chargable battery
Replies: 8
Views: 925

Re: Esp32 with LED Strip and chargable battery

Now I get it, you want to charge the battery and power your LEDs from ESP board. There is 3.3V out of the ESP board, use a booster circuit to pump the voltage up, you will run into a problem, the current will be not be sufficient for this.
by kmmaran
Thu Dec 12, 2019 1:50 am
Forum: Hardware
Topic: Esp32 with LED Strip and chargable battery
Replies: 8
Views: 925

Re: Esp32 with LED Strip and chargable battery

Can you give more detail of this project. You have Supply voltage and LEDs and then what you plan to do?
by kmmaran
Wed Dec 11, 2019 5:02 pm
Forum: ESP32 IDF
Topic: SoftAP WiFi Protocol in Git is it 802.11b?
Replies: 0
Views: 252

SoftAP WiFi Protocol in Git is it 802.11b?

Hi Guys, Like to know the SoftAP/Station example from ESP32 Git, is it 802.11b protocol or a different protocol? If different what protocol is it? and where in below code the protocol specified? wifi_config_t wifi_config = { .ap = { .ssid = EXAMPLE_ESP_WIFI_SSID, .ssid_len = strlen(EXAMPLE_ESP_WIFI_...
by kmmaran
Sat Oct 05, 2019 10:28 am
Forum: Hardware
Topic: [solved] BOOT Switch (Boot Mode Selection) is it needed?
Replies: 2
Views: 806

[solved] Re: BOOT Switch (Boot Mode Selection) is it needed?

Thanks ESP_Sprite, good info.
by kmmaran
Sat Oct 05, 2019 10:26 am
Forum: Hardware
Topic: ESP32-S antenna question
Replies: 3
Views: 813

Re: ESP32-S antenna question

This is my understanding of the chip, as I worked on similar chip from different manufacturer. The radio front-end inside the chip (PA, LNA, Mixer, Filters and etc) are shared between WiFi comm and BT Comm. Unless each has different line up for each comm protocol than two comm at same time is possib...
by kmmaran
Thu Oct 03, 2019 1:47 am
Forum: Hardware
Topic: Programming Custom Board
Replies: 1
Views: 687

Re: Programming Custom Board

I had same issue as well and struggled for weeks. Realised the load capacitor for crystal was wrong. First check all the supply, check crystal, crystal signal amplitude, frequency, compare to good board, crystal cap. Can the USB bridge chip talk to your PC, look in device manager. EPS32 won't be in ...
by kmmaran
Thu Oct 03, 2019 1:30 am
Forum: Hardware
Topic: ESP32-WROOM-32 external Wi-Fi antenna?
Replies: 5
Views: 10527

Re: ESP32-WROOM-32 external Wi-Fi antenna?

In general, the on board antenna is PIFA structure, means it has approximately 0dBi gain (around this number). With external antenna, we talking a proper dipole, with 2.15dBi gain, connected to the board with good RF method, you will get better range. What antenna are you using and how do you positi...
by kmmaran
Wed Oct 02, 2019 11:32 pm
Forum: Hardware
Topic: [solved] BOOT Switch (Boot Mode Selection) is it needed?
Replies: 2
Views: 806

[solved] BOOT Switch (Boot Mode Selection) is it needed?

Hi Experts,

I am curious about about boot switch connected to GPIO #0 for Boot Mode Selection.
I can flash the board without press and holding the boot switch, why this switch is important and needed if I am able to flash without doing anything to GPIO #0?

Thank you.
by kmmaran
Thu Aug 08, 2019 11:18 am
Forum: Hardware
Topic: ESP32 RF Switch GPIO availability?
Replies: 3
Views: 1820

Re: ESP32 RF Switch GPIO availability?

Hi WiFive,

This solution that you gave does it work for Bluetooth or for wifi only. Is there any similar for Bluetooth or ble.

Thank you.

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