Very good spotting, @bxwen19 ! Still, I wouldn't worry about that. There are some 3.3V LDO regulators that have different pinout than AMS1117.
If you're unsure about the 3.3V and 5V roles and think that information on the silkscreen is incorrect, then disconnect the programmer from the device and power it from mains and then carefully check if "5V" is really a 5V pin and "3.3V" is really 3.3V pin. Just to be sure.
Then, disconnect mains (always disconnect mains before doing any programming, never connect mains while doing programming) and use 5V pin as stated before - it's an input of the LDO (AMS1117 or any other LDO).
Hello @Maniac2002 . I will try to help you here. You need to find BOOT pin, which is, unless I'm much mistaken, the GPIO8.
Please refer to this schematic: (this is another board)
I have composed an image for you. The dot marks the first pin. See where GPIO8 is:
Now, my question is, where does the via goes with GPIO8? Can you look at the other side of the board? Where is this PCB track connected? I can't clearly see it on your photos...
Maybe you can check with multimeter where does GPIO8 goes?
iv got the same Magic Home Controller as in Thread1 described.
And use an USB UART Adapter with 3,3V Logiclevel with a PL2303 Chip until 115200 bd.
This: https://www.conrad.com/p/usb-rb-ttl-cable-for-raspberry-pi-409202 Is it the wrong one?
But i cant program the Bl602. The Flashtool always says, that there is no communication with the serial Port. "Listening Failure..."
I clickt on "Refresh", the right Serial Port (11) will displayed, but no connection. I measured the 3,3V, it stays stable, Boot Pin ist with 1K Resistor to 3,3V connected.
On the PCB the Boot Pin has a pulldown Resistor of 10K. Thats why I took a 1k Pullup.
Any suggestions? Any Changes of the Programming Procedure or Software?
I tryd the Flasher downloaded from this Thread.
On "Firmware Bin" I set the .bin File from the Github Repo? Is it right so?
Cell phone can see a wifi access point openbl602_...., if click, it says sign into network,showed tasmota interface, but then disconnect
Teraterm shown random symbols. There is no baud rate 2000000 to choose
Finally, wifi is connected. Is it time to remove the wires and solder everything back? Is the OTA working? How to toggle the relay and how to read the power?
EDIT: Found it here:
https://github.com/openshwprojects/OpenBK7231T_App/releases Thank You, now i Will try again flashing
It workt now.
The Problem was, the actual Driver from Profilic for the PL2303 Adapter does not work. I must use an older Driver from Windows 7.
Than the Flashing works without Problems.
Now i configure my "new" Controller to controll a RGB Stripe.
Done, works great!
Is there a Way to connect the Device via MQTT2 to FHEM?
After one Day of succesfull work, i disconnected the working Controller from Power.
Until now, the Controller works fine.
After disconnecting from Power an reconnecting, the Controller was not reachable.
I flashed it again, no Accespoint, I flashed the 1.12.59 but nothing happens again. Than flashed 1.12.61 again, nothing...
What could I do, to bring the Controller back to live?
What am i doing wrong? Its still flashable. but no Accesspoint after flashing.
EDIT: I disconnected the Device 6 Times like Tasmota Devices and he is online again.
Now i go on with MQTT Configuration.