Search found 323 matches

by davef
Thu Jul 29, 2021 1:21 am
Forum: ESP8266 boards
Topic: Which board for deep sleep?
Replies: 5
Views: 148

Re: Which board for deep sleep?

WiFi or no WiFi? If no WiFi, I suggest seeing what the Pyboard is capable of or even the Black Pill dev board. Need WiFi, maybe the ESP32_SPIRAM might be more successful or the ESP32 DevKitC-VE at least it has a different version of the ESP32 chip in it. About $10-12$US from Aliexpress. https://www....
by davef
Tue Jul 27, 2021 6:33 am
Forum: ESP8266 boards
Topic: Won't wake up from Deep Sleep
Replies: 29
Views: 474

Re: Won't wake up from Deep Sleep

Buying random boards off Aliexpress didn't work for me. There appears to be lots of rev 1 chip out there in ESP32 boards. Only by going to a local Micropython meeting did I find out that a bunch of boards that another attendee had had rev3 chips in them. So, I ordered some of those from Aliexpress. ...
by davef
Tue Jul 27, 2021 1:35 am
Forum: ESP8266 boards
Topic: Won't wake up from Deep Sleep
Replies: 29
Views: 474

Re: Won't wake up from Deep Sleep

My attention was diverted to the 8pin connector, I now see that the ESP-12? is plugged-in.

After reading the Github issue looks like you need a schematic of that dev board and work out how all the GPIO are really hooked-up.

Good luck!
by davef
Mon Jul 26, 2021 9:58 pm
Forum: ESP8266 boards
Topic: Won't wake up from Deep Sleep
Replies: 29
Views: 474

Re: Won't wake up from Deep Sleep

Wow, that Github issue makes me wonder how we ever get lucky enough to get these dev boards to work. Thanks for posting it, lots hints for when my NodeMCU boards arrive.
by davef
Mon Jul 26, 2021 8:18 pm
Forum: ESP8266 boards
Topic: Won't wake up from Deep Sleep
Replies: 29
Views: 474

Re: Won't wake up from Deep Sleep

Looks like someone is having grief. viewtopic.php?f=16&t=7057&start=10
by davef
Mon Jul 26, 2021 8:14 pm
Forum: ESP8266 boards
Topic: Won't wake up from Deep Sleep
Replies: 29
Views: 474

Re: Won't wake up from Deep Sleep

Downloaded a ESP-12F datasheet but it is not the same PCB layout as yours. Who made your board? Have you got a Linux machine?
by davef
Mon Jul 26, 2021 4:27 am
Forum: ESP32 boards
Topic: New trouble flashing micropython onto ESP32 wroom-32
Replies: 7
Views: 204

Re: New trouble flashing micropython onto ESP32 wroom-32

Even though I use little SMPSs that can supply 1.5 to 3A I put a 1000uF 16V low-ESR cap on the supply.
by davef
Mon Jul 26, 2021 12:44 am
Forum: ESP8266 boards
Topic: Is this the right way to flash?
Replies: 2
Views: 408

Re: Is this the right way to flash?

For ESP-NOW and a ESP-01S board: 1) hold GPIO0 low 2) plug in USB 3) sudo esptool.py --chip esp8266 --port /dev/ttyUSB0 erase_flash 4) hold GPIO0 low 5) plug in USB 6) sudo esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=1MB -fm dout 0x0 esp8266-1m-20200902-v1.13.bin try --bau...
by davef
Mon Jul 26, 2021 12:34 am
Forum: ESP8266 boards
Topic: Won't wake up from Deep Sleep
Replies: 29
Views: 474

Re: Won't wake up from Deep Sleep

I would often get the same. Don't know what fixed it, but haven't seen it for months.
Can you erase the chip?
by davef
Mon Jul 26, 2021 12:31 am
Forum: ESP8266 boards
Topic: Won't wake up from Deep Sleep
Replies: 29
Views: 474

Re: Won't wake up from Deep Sleep

Have you checked that you have a connection to COM3? How many different boards are you working on?