Search found 4121 matches

by ESP_Sprite
Mon Nov 23, 2020 1:32 am
Forum: ESP32 Arduino
Topic: ESP32 cam and nRF24L01
Replies: 4
Views: 360

Re: ESP32 cam and nRF24L01

WiFi and BT use the same pin for the antenna. Not sure if you can add an external antenna to an ESP-Cam without some hacking (that is, cutting the trace to the internal antenna and soldering the external connector onto that) and the signal quality afterwards isn't guaranteed.
by ESP_Sprite
Mon Nov 23, 2020 1:29 am
Forum: ESP32 Arduino
Topic: Game ROM on SD card
Replies: 17
Views: 896

Re: Game ROM on SD card

Radu79: Serialization can also mean that you have game logic as an interconnected set of structs and objects in memory and need to 'flatten' it to store it in e.g. a file. I imagine that's the way nezvers used the word. Nezvers: You can't execute code in a practical sense from anywhere other than fl...
by ESP_Sprite
Mon Nov 23, 2020 1:18 am
Forum: General Discussion
Topic: Fastest way to transfer data
Replies: 4
Views: 201

Re: Fastest way to transfer data

WiFi would certainly be the fastest way to do that. As an alternative to that, SDIO is also pretty fast, but a lot harder to implement with a PC, so I'd go for WiFi.
by ESP_Sprite
Mon Nov 23, 2020 1:14 am
Forum: General Discussion
Topic: After how long do i expect the module to wear out?
Replies: 5
Views: 295

Re: After how long do i expect the module to wear out?

As long as you use them within spec (e.g. not putting 5V on an IO line directly) the chips should last forever. The flash does have a limited lifespan, but unless you write to it extensively it should have a practical lifetime of decades. Perhaps it's indeed a component in your power supply that has...
by ESP_Sprite
Sat Nov 21, 2020 3:36 pm
Forum: Hardware
Topic: DRV8825 Stepper Motor Timer and Clock
Replies: 3
Views: 427

Re: DRV8825 Stepper Motor Timer and Clock

Good point. Moved to hardware.
by ESP_Sprite
Sat Nov 21, 2020 3:30 pm
Forum: ESP-IDF
Topic: Esp32 flash memory explorer
Replies: 2
Views: 351

Re: Esp32 flash memory explorer

Esptool.py (included in the esp-idf as a submodule) can dump the flash of an attached ESP32. If it contains a filesystem, you'd have to find a way to get the files from there yourself, though.
by ESP_Sprite
Fri Nov 20, 2020 7:39 am
Forum: ESP-IDF
Topic: Can I write directly to flash/partition without fatfs/wear lvl etc drivers?
Replies: 5
Views: 641

Re: Can I write directly to flash/partition without fatfs/wear lvl etc drivers?

Technically, the flash in an ESP32 module is an 'external IC' as in the flash is not on the die itself, so in that aspect it's more-or-less the same as you're used to. The difference is that the ESP32 has some advanced caching that transparently can allow memory access to the chip, so it's not advis...
by ESP_Sprite
Fri Nov 20, 2020 6:06 am
Forum: ESP-IDF
Topic: standalone manufacturing
Replies: 2
Views: 376

Re: standalone manufacturing

You probably want to use esptool.py directly if you want to flash binaries. You can run 'idf.py build' on a machine with the sources installed to get an idea of the command line you'd want to use.
by ESP_Sprite
Thu Nov 19, 2020 9:21 am
Forum: ESP32 Arduino
Topic: Connecting relay module to heltec esp32 v2
Replies: 2
Views: 148

Re: Connecting relay module to heltec esp32 v2

> When i connect the vcc of the relay to 3.3v then the relay is not turned on and neither the red led or tge green led is turned on.

Well, there's your likely problem. The ESP32 only can output up to 3.3V on its GPIOs, and presumably your relay needs 5V minimum.
by ESP_Sprite
Thu Nov 19, 2020 1:46 am
Forum: ESP-IDF
Topic: Can I write directly to flash/partition without fatfs/wear lvl etc drivers?
Replies: 5
Views: 641

Re: Can I write directly to flash/partition without fatfs/wear lvl etc drivers?

From what I recall, FatFS is only robust to power fails in some configurations. The docs should have more information about this. It's possible to directly access partitions. You can use the SPI flash api to either do that or write to the entire flash. (Just in case: do make sure you're aware of NOR...

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