I am choosing a development board for a battery with solar operated device. I want to choose ESP32-‎PICO-KIT V4.1 because of its certifications. But the hitch is LDO ASM1117 on this board. The Quiescent ‎current of this LDO is 5mA which is too much for battery operated device. Any good reason Espres...

Thanks WiFive. I learned that ICAO and IATA have quite a number of resources on the topic.

I want to distribute an IoT product commercially. The product is powered by LiPo battery (3.7V nominal) ‎which is charged by solar panel (6V, 2W). ‎ My question is can I ship the product (internationally) with LiPo battery included? Are there any ‎regulations against it? What is the usual practice i...

From Datasheet:

External connections can be made to any GPIO except for GPIOs in the range 6-11, 16, or 17. GPIOs 6-11 are connected
to the module’s integrated SPI flash and PSRAM. GPIOs 16 and 17 are connected to the module’s integrated PSRAM

I can't see these pins exposed in modules.

Thanks dastoned.

you're not using the pins which connect to the PSRAM chip, you're good

That's it? Sounds good. And Which pins connect to the PSRAM chip? I will keep miles away from those

I have used ESP-IDF for programming WROOM based boards for some time now. Just want to confirm before ordering WROVER modules (which I have never used before), Is there any difference in programming WROVER and WROOM using ESP-IDF?

Never used "emqx.io" broker so cannot be sure. Just a guess, in

mqtt_cfg.uri = "mqtt://broker.emqx.io";

shouldn't it be mqtts:// instead of mqtt://.

Also where are credentials, username, password etc.?

If a user didn't sent correct SSID and PW in first attempt, he resends the credentials and "wifi_init_sta(void)" is executed again. But the second time core panics, most probably the first instance of "esp_netif" is not destroyed. I know "esp_netif_init()" should be fired only once and if firing sec...

Finally I was able to change value of characteristic and also notify to the client. For anyone stuck like me, while following gatt_server_service_table example: I defined characteristic value as : uint8_t char_value[] = "InitialValue"; Added characteristic in the table as follows: [IDX_CHAR_A] = {{E...

I am following sample of “gatt_server_service_table” at https://github.com/espressif/esp-‎idf/tree/release/v4.1/examples/bluetooth/bluedroid/ble/gatt_server_service_table .‎ My question is how can I change the value of characteristic in the code? I mean if I want to convey ‎changes in temperature va...