Search found 42 matches

by Cellie
Wed Nov 04, 2020 11:20 am
Forum: General Discussion
Topic: ESP-WROVER-KIT V3 physical dimensions
Replies: 13
Views: 15461

Re: ESP-WROVER-KIT V3 physical dimensions

Bump.

@ESP_igrr There are still no drawings with the dimensions to find for the dev boards.

Like permal said, these drawings should/could be uploaded to docs.espressif.com.
by Cellie
Fri Oct 23, 2020 10:20 am
Forum: Sample Code
Topic: eStreamPlayer32 - Mediaplayer for Arduino IDE.
Replies: 0
Views: 2910

eStreamPlayer32 - Mediaplayer for Arduino IDE.

I made a mediaplayer for esp32 that plays webstreams and your local files from a http server.
The interface is completely web-based.
It compiles in the Arduino IDE.

To browse the local files you need to copy a php script to the http server.

https://github.com/CelliesProjects/eStreamPlayer32
by Cellie
Thu May 14, 2020 9:10 am
Forum: Hardware
Topic: GPIO drive strength.
Replies: 6
Views: 12848

Re: GPIO drive strength.

@bobtidey The resistor (I use 20K) gate -> ground is present. Thanks for the tip about IRF3708, I think I will buy and test some of those. @Saakje If you are using an NPN power transistor, then yes, you will need a resistor and you will pull current into the base. Do you maybe have some background i...
by Cellie
Sat May 09, 2020 6:03 pm
Forum: Hardware
Topic: GPIO drive strength.
Replies: 6
Views: 12848

Re: GPIO drive strength.

If you are using an NPN power transistor, then yes, you will need a resistor and you will pull current into the base. Hi Saakje. I am using IRLZ44N mosfets so a gate resistor should be includeed in my opinion. While testing I drove the mosfets a while without gate resistors and no bad things happen...
by Cellie
Tue Jan 29, 2019 5:14 pm
Forum: Hardware
Topic: GPIO drive strength.
Replies: 6
Views: 12848

GPIO drive strength.

I read about the increased maximum drive strength on GPIOs and went looking for an example. Could not find one and just tried some code on a MH-ET LIVE minikit. The code compiles and the esp did not blow up! void setup() { pinMode( LED0_PIN, OUTPUT ); pinMode( LED1_PIN, OUTPUT ); pinMode( LED2_PIN, ...
by Cellie
Fri Apr 27, 2018 7:08 am
Forum: Hardware
Topic: Unknown revision esp32? revision (unknown 0xa)
Replies: 7
Views: 10976

Re: Unknown revision esp32?

@ESP_Angus & WiFive: Thanks for the explanation. Made things clear. For reference (from https://github.com/espressif/esp-idf/blob/cc2d1fda964afb310c0ffa9b1bf9d2065b7121f2/components/soc/esp32/include/soc/efuse_reg.h#L94-L99 ): /* EFUSE_RD_CHIP_CPU_FREQ_RATED : R/W ;bitpos:[13] ;default: 1'b0 ; */ /*...
by Cellie
Thu Apr 26, 2018 2:13 pm
Forum: Hardware
Topic: Unknown revision esp32? revision (unknown 0xa)
Replies: 7
Views: 10976

Unknown revision esp32? revision (unknown 0xa)

Today I received some new MH-ET mini kits . With esptool 2.3.1 ( on Linux Mint 17.2 Rafaela ) I get this output when I flash the chip: Connecting..... Chip is ESP32D0WDQ6 (revision (unknown 0xa) Features: WiFi, BT, Dual Core, VRef calibration in efuse The markings on the RF can are also a bit differ...
by Cellie
Mon Apr 16, 2018 12:50 pm
Forum: ESP32 Arduino
Topic: Conflict WiFi with dallas temperature library for ds18b20 ???
Replies: 3
Views: 8282

Re: Conflict WiFi with dallas temperature library for ds18b20 ???

No idea why the network scan would interfere. I do have some code which should run. https://github.com/CelliesProjects/dallas-webserver https://github.com/CelliesProjects/esp32-multi-DS18B20-task And check out stickbreakers OneWire repo . This lib solves a lot of OneWire problems, and the solutions ...
by Cellie
Sat Apr 14, 2018 2:31 pm
Forum: ESP32 Arduino
Topic: Heltec ESP W32 Kit with OLED (beginner)
Replies: 2
Views: 11959

Re: Heltec ESP W32 Kit with OLED (beginner)

I have made a millisecond clock poc on a similar OLED.
Shows some basic concepts.

https://gist.github.com/CelliesProjects ... 1054c409c3

You probably need to change the pin definitions.