Search found 8912 matches
- Sat Feb 04, 2023 1:03 am
- Forum: Hardware
- Topic: PCB check, and ideas
- Replies: 16
- Views: 4367
Re: PCB check, and ideas
Ah, that's much more readable. Just a nitpick: some people don't like 'Christmas trees' in their schematic, in other words, if you want to make it really clean, you want all your ground symbols to point down and your power rail symbols to point up. No need to change it for readability in this schema...
- Sat Feb 04, 2023 12:41 am
- Forum: Hardware
- Topic: ESP32-S3-WROOM1 : Type of SPI Flash embedded ?
- Replies: 6
- Views: 1576
Re: ESP32-S3-WROOM1 : Type of SPI Flash embedded ?
Yes. There's FAT, spiffs and littlefs, for example.
- Fri Feb 03, 2023 1:23 pm
- Forum: ESP32 Arduino
- Topic: ESP32-U4WD Preinstalled Bootloader
- Replies: 4
- Views: 1573
Re: ESP32-U4WD Preinstalled Bootloader
ESP chips come with a bootloader from the factory embedded in non-modifyable ROM. You both cannot and do not need to install your own bootloader to program them.
- Fri Feb 03, 2023 1:20 pm
- Forum: Hardware
- Topic: ESP32-S3-WROOM1 : Type of SPI Flash embedded ?
- Replies: 6
- Views: 1576
Re: ESP32-S3-WROOM1 : Type of SPI Flash embedded ?
Currently, ESP chips can only boot from NOR flash. The difference between it and e.g. a SD card is that SD cards have an entirely different interface, tend to be much larger, and usually consist of NAND flash with an ASIC that acts as a translation layer to do wear leveling and error correction.
- Fri Feb 03, 2023 1:17 pm
- Forum: Hardware
- Topic: Custom ESP32-C3 not detecting COM port (crystal problem?)
- Replies: 15
- Views: 5482
Re: Custom ESP32-C3 not detecting COM port (crystal problem?)
The thing is that on all current ESP chips, the crystal needs to be running before the CPU will try to boot from anything, so regardless of bootstrap pins or flash contents you should still see activity on the crystal.
- Fri Feb 03, 2023 1:30 am
- Forum: Hardware
- Topic: PCB check, and ideas
- Replies: 16
- Views: 4367
Re: PCB check, and ideas
Before I start, have you looked at the hardware design guidelines ? - Your schematic is a mess of wires. Suggest you use nets (=those labels with the same name, as a random example this uses a lot of them) to clear things up so we don't have to manually follow traces. I probably didn't catch all mis...
- Fri Feb 03, 2023 1:13 am
- Forum: Hardware
- Topic: Custom ESP32-C3 not detecting COM port (crystal problem?)
- Replies: 15
- Views: 5482
Re: Custom ESP32-C3 not detecting COM port (crystal problem?)
Are you sure the crystal footprint is correct and the crystal is soldered properly?
- Fri Feb 03, 2023 1:09 am
- Forum: Hardware
- Topic: ESP32-C3 needs external flash chip?
- Replies: 19
- Views: 13663
Re: ESP32-C3 needs external flash chip?
If your problem is only the lack of flash, then yes, it would solve the issue.
- Thu Feb 02, 2023 7:44 am
- Forum: Hardware
- Topic: ESP32-C3 needs external flash chip?
- Replies: 19
- Views: 13663
Re: ESP32-C3 needs external flash chip?
Yes, the ESP32-C3FN4 (like in that Mouser link) would work (although you'd probably want an 100nF from Vdd_spi to gnd for stability), a plain ESP32-C3 would not.
- Thu Feb 02, 2023 2:22 am
- Forum: Hardware
- Topic: Custom ESP32-C3 not detecting COM port (crystal problem?)
- Replies: 15
- Views: 5482
Re: Custom ESP32-C3 not detecting COM port (crystal problem?)
C18 is not connected in your schematic (on purpose or otherwise). You do need that as it forms part of the RC network that properly resets the C3. Also, Vdd_spi generally needs a 1uF capacitor to ground. Both things should not stop the crystal from functioning, though; I'm afraid I have no idea what...