PCB Design for ESP32 Stand alone module
-
@kowshik1729 Hey did you eventually get the PCB design for this finalized?
-
@mgfuller333 No not yet, but there seems a quite nice progress in the design. I'm still researching on the antenna interfacing part.
-
Hi All, i m also facing the same error. we are developing an iot device based on esp32d0wdq6 controller. we have designed a board. Now the program is not getting uploaded. the connections are
TTL Converter 3.3v - vcc (ESP32)
TTL Converter gnd - gnd (ESP32)
TTL Converter TXD - RXD (ESP32)
TTL Converter RXD - TXD (ESP32)
GND - GPIO 0 (ESP32)
3.3V - EN (ESP32).
Connecting......................................____An error occurred while uploading the sketch
_
this is error message i m getting.A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header
FYI, we are using the W25Q40CL flash ic. please help me to sort out this issue.
Thanks in Advance ! -
And having one more doubt !
Bootloader for esp32 will present already or we need to load the bootloader code into the newly brought esp32 chip ? -
@Sharmila If you're programming the board for the first time using Arduino IDE then you need to burn the bootloader into the bare IC. I have a doubt when you said the IC is not getting programmed even though the GPIO0 is low.
I wanna know is GPIO0 low all the time or did you pull it low momentarily using a button??
-
@kowshik1729 Yes i m programming the board first time using arduion. GPIO 0 is low all the time.
-
@Sharmila GPIO0 must not be low all the time. It must be held low only for a moment. Because GPIO0 is a boot strap option for choosing between UART download and normal operation. Please refer to the datasheet and search boot strap. And also can you please post a snap of your newly designed board please?
-
@kowshik1729 thank you for the hint ! i will check it . schematic picture of my board is given below
(
) -
@kowshik1729 sorry, gpio 0 is low only till it is programmed. after that this will disconnected.
-
@Sharmila Reviewed your schematics. Have the following doubts
- Is this a USB receptacle?
- Didn't find any option where you can pull the GPIO0 low and bring it back to normal state. Did you have a jumper connection or button between GPIO0 and GND?
Recent Posts
-
Hi all,
I recently came across this post where they have shown photos printed on PCB in high resolution. I would like to know how to add this kind of photos to the silkscreen layers of the PCB in Eagle/Altium.
Adding such kind of photos will be attractive for beginners and also can be used for educational purposes too.
Please let me know in case anybody knows. -
@kowshik1729 I think that might not get since the platform is not opensource! but they provided everything you need to develop a system with that.
-
@kowshik1729 Carrier board schematics for SoMs will be always available as they need to be modified as per customer application, however SoM design files are hard to get unless the H/W design is truly open-source.
-
@salmanfaris Actually the schematics files you've mentioned are the same files which I've got from them. They are carrier board design files.
