Module ESP8266 without TF on Amiga

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matt020
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Re: Module ESP8266 without TF on Amiga

Post by matt020 » Wed Apr 15, 2020 11:44 pm

kulamario wrote:
Wed Apr 15, 2020 3:20 pm
Yesterday i got adapter
Does that adapter convert 12v signal from the Amiga to 3.3v for the ESP8266?

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kulamario
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Re: Module ESP8266 without TF on Amiga

Post by kulamario » Thu Apr 16, 2020 12:38 am

I think so I power this 3.3v so should be
I have question about esp8266 speed
What baudrate I should set up ?and what mode ?

dalek
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Re: Module ESP8266 without TF on Amiga

Post by dalek » Thu Apr 16, 2020 1:38 am

Hey, I like your idea of an all-in-one pcb with a DB25 connector. It would be handy to have along with a network boot disk to jumpstart any old system. I don't like the idea of extra cables sticking out.

But you'll need to add a jumper/switch for programming the chip - I think for the one you've selected it's GPIO0 to put it in programming mode, along with the reset button.

And you should connect up all the grounds on your DB25 connector (missing in your schematic and PCB).

matt020
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Location: West Australia

Re: Module ESP8266 without TF on Amiga

Post by matt020 » Thu Apr 16, 2020 3:00 am

I'm no expert, but I'm still concerned about the 12v <--> 3.3v side of it.

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kulamario
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Re: Module ESP8266 without TF on Amiga

Post by kulamario » Thu Apr 16, 2020 3:27 am

dalek
I agree, need to add a jumper on GPIO-0 to GND
I was also thinking about adding a link to esp8266-01

matt020
you can't have 12V on the output because MAX3232 is powered by 3.3V after that the maximum voltage for max3232 is 5V
so you definitely have the TTL standard output

matt020
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Location: West Australia

Re: Module ESP8266 without TF on Amiga

Post by matt020 » Thu Apr 16, 2020 3:33 am

What is the voltage on the Amiga serial port TX line?

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kulamario
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Re: Module ESP8266 without TF on Amiga

Post by kulamario » Thu Apr 16, 2020 3:34 am

On amiga I think is 12V

matt020
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Location: West Australia

Re: Module ESP8266 without TF on Amiga

Post by matt020 » Thu Apr 16, 2020 3:36 am

kulamario wrote:
Thu Apr 16, 2020 3:34 am
On amiga I think is 12V

Does the serial to TTL adapter lower the voltage from 12v to 3.3 for the ESP8266 module?

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kulamario
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Re: Module ESP8266 without TF on Amiga

Post by kulamario » Thu Apr 16, 2020 3:38 am

Yes exactly this module change for 3.3V

dalek
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Location: NSW Australia

Re: Module ESP8266 without TF on Amiga

Post by dalek » Thu Apr 16, 2020 4:34 am

matt020 wrote:
Thu Apr 16, 2020 3:33 am
What is the voltage on the Amiga serial port TX line?
kulamario wrote:
Thu Apr 16, 2020 3:34 am
On amiga I think is 12V

No, it's 5V per schematics.

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