Android Question Wich Rs232 <-> Bluetooth converter for B4A ?

hatzisn

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Longtime User

• Feb 18, 2023

• #2

[US$16.99 19% OFF] Πλακέτα προσαρμογέα σειριακής θύρας RS232 Bluetooth - Λειτουργίες Master Slave, Προφίλ Θύρας Serial Bluetooth Mini USB 5V Πίνακας ενότητας from Ηλεκτρονικά εξαρτήματα & αναλώσιμα on banggood.com

RS232 Bluetooth Serial Adapter Board Communication Master Slave 2 Modes Mini USB Bluetooth Serial Port Profile Module 5V

m.banggood.com

But you can build your own:


Pay attention to handshake and null configuration with software "handshake".

I would use an esp8266 possibly with LLT if the voltage levels were more than 3,3V and post the received bytes to mqtt broker.

 

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amorosik

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• Feb 19, 2023

• #3

Yes, I've seen that converter before, it's quite common on Amazon too
But I think it must be powered via USB I was looking for a device that was powered exclusively by the rs232 port connector
I know that some have a system to 'suck' current from the rts/cts/dcd lines and power the converter's internal electronics

 

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hatzisn

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Longtime User

• Feb 19, 2023

• #4

I googled it and found out that rs232 signals are valid in the range (+3...+15V and -3...-15V) so you can check it out if you have a voltometer. Maybe you can build it yourself from the previous video from the DSR connection in your gps taking under notice the undeline voltage. Download the application "components pinout" and search > by family > cables (everything you need is in there for the DB9 plug).

 

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amorosik

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• Feb 19, 2023

• #5

Of course, I could build it myself, but if I find something ready, even better

https://www.epanorama.net/circuits/rspower.html

https://electronics.stackexchange.com/questions/136202/how-can-rs-232-dtr-rts-pins-be-used-for-power

 

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amorosik

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• Feb 19, 2023

• #6

Here they are, I found them

https://www.taskit.de/en/products/embedded-products/converter/

It is not clear that BLE2323_peripheral and that BLE232_central

 

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E

emexes

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Licensed User

• Feb 19, 2023

• #7

amorosik said:

https://www.taskit.de/en/products/embedded-products/converter/

Click to expand...

I was mildly worried by:

Note: To obtain a wireless radio solution, two BLE232 Plus converters are required.

Click to expand...

but page 4 of the manual indicates that it can probably be used singly via BLE from B4X so... yay!

Good find. ?

 

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