What kind of hardware?

[mrwee]

Hi,

I'm looking for some hardware where I can connect a probe to "any" serial connection where I can view the data being sent, on my PC. Right now I'm looking inside a tower fan, which has two PCB's with a connector between. The connector has e.g. RX/TX, so I was thinking if I somehow could tap into the communication and perhaps replicate it via en ESP + misc. hardware. Does such hardware exist? (Not only for e.g. RS-232).

[TD-er]

Well such protocol decoders do exist and often use a PC to decode the data.
For example Sigrok

For this you can use just about any logic analyser tool, like the very affordable 8 channel 24 MHz USB analyzers which can be had for less than 10 euro.
For example: https://www.banggood.com/nl/USB-Logic-A ... 77821.html
But there are lots and lots of sellers of these.

Only disadvantage is that you need to hook it to a PC.

[chemmex]

Only disadvantage is that you need to hook it to a PC.

Sigrok also has Android port, so it can be used with a phone via OTG

[TD-er]

OK, didn't know that.
Now find a phone supporting USB OTG

[mrwee]

Don't mind a PC, I'll try the one @TD-er is linking to. For that price, I can afford possible mistakes

[TD-er]

Just keep in mind the GND of the analyzer is connected to the GND of your PC.
So make sure you don't try to connect it to something with a completely different potential.

[mrwee]

Just keep in mind the GND of the analyzer is connected to the GND of your PC.
So make sure you don't try to connect it to something with a completely different potential.

Yes, that's a classic mistake. Looking forward to testing when the box arrives. Thanks for your input, so far