Search found 15 matches

by PsuFan
Fri Nov 15, 2019 9:55 pm
Forum: ESP8266 boards
Topic: Multiple networks in boot.py
Replies: 4
Views: 2101

Re: Multiple networks in boot.py

Here's v2! This supports scanning and connecting to hidden networks via MAC identification. Although the stock MicroPython software does NOT return hidden networks in scan(). I do not recommend blindly trying to connect to hidden networks, as connect() writes to the limited write flash memory. I rec...
by PsuFan
Wed Nov 13, 2019 3:50 pm
Forum: General Discussion and Questions
Topic: connecting to hidden WLAN
Replies: 3
Views: 807

Re: connecting to hidden WLAN

Did you try .connect()ing after you changed the AP to hidden?

I'm trying to figure out why scan() returns no hidden networks...
by PsuFan
Sat Oct 19, 2019 2:23 pm
Forum: ESP8266 boards
Topic: ESP12F Minimum Serial Wiring
Replies: 11
Views: 1311

Re: ESP12F Minimum Serial Wiring

I have confirmed that even the first schematic I posted is perfectly stable with a good power supply. I still haven't been able to boot with the serial adapter power or 2x Energizer Ultimate Lithium batteries that run at 3.4v. Still seeing a huge voltage drop on the batteries. Not seeing a ton of am...
by PsuFan
Sat Oct 19, 2019 3:32 am
Forum: ESP8266 boards
Topic: ESP12F Minimum Serial Wiring
Replies: 11
Views: 1311

Re: ESP12F Minimum Serial Wiring

Finally got it booted, wasn't giving it enough power Scotty. Even the AA batteries that were powering a D1 mini aren't powering this thing. Still haven't found the boot baud...
by PsuFan
Fri Oct 11, 2019 11:05 am
Forum: ESP8266 boards
Topic: ESP12F Minimum Serial Wiring
Replies: 11
Views: 1311

Re: ESP12F Minimum Serial Wiring

Yeah it's definitely unstable but itself which is lame. Why make a chip that makes you have to solder on all this extra stuff to work.

Rst cap to vcc or ground?
by PsuFan
Wed Oct 09, 2019 6:18 pm
Forum: ESP8266 boards
Topic: ESP12F Minimum Serial Wiring
Replies: 11
Views: 1311

Re: ESP12F Minimum Serial Wiring

I wasn't getting any readable message on any baud I tried (9600, 115200, 74880). The problem may be caused by insufficient power or not using resistors. I was able to briefly get into the Repl using two AA batteries that run a little hot (3.2v). I have GPIO15 directly to ground, EN directly to VCC. ...
by PsuFan
Wed Oct 09, 2019 1:08 pm
Forum: ESP8266 boards
Topic: ESP12F Minimum Serial Wiring
Replies: 11
Views: 1311

Re: ESP12F Minimum Serial Wiring

Would I be able to upload a firmware (getting the chip type, mac, flash size, setting baud, etc) having the rx/tx swapped? I've verified USB wiring on board printing itself. (I had to solder power to 3.3v pad)
by PsuFan
Wed Oct 09, 2019 2:58 am
Forum: ESP8266 boards
Topic: ESP12F Minimum Serial Wiring
Replies: 11
Views: 1311

ESP12F Minimum Serial Wiring

Hello, What are the minimum wiring for serial MicroPython Repl? Diagrams are all over the place on needing different resistors and pulling up GPIO0 and GPIO2. Some pull up RST, some don't, etc. Where is the official spec, what is actually needed? I am able to get into flash mode and have erased and ...
by PsuFan
Tue Oct 01, 2019 7:46 pm
Forum: ESP8266 boards
Topic: Handling unicode data in sockets
Replies: 9
Views: 530

Re: Handling unicode data in sockets

def chr(self, asc): return ustruct.pack('b', asc) def sendField(self, cmd, value): self.sendData(self.makeField(cmd, value)) def makeField(self, cmd, value): return self.chr(cmd) + self.makeLength(len(str(value)), 2) + str(value).encode() def sendData(self, data): if self.connected: l = len(data) s...