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 3. GQ EMF EF Meter RF Spectrum Power Analyzer
 comunicate emf-390 with arduino 1
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mserdag

Argentina
8 Posts

Posted - 03/27/2023 :  13:58:42  Show Profile  Reply with Quote
Hi, i try to connect this arduino 1 by serial port 115200, 8n1, but the emf does not response, i send <POWERON>> just to test, but not work, any idea?
Reply #1

EmfDev

2143 Posts

Posted - 03/29/2023 :  10:39:20  Show Profile  Reply with Quote
Hi mserdag, the port is USB. You need to connect the RX/TX of the arduino to the TX/RX directly to CPU or input pin CH340 of the EMF in order to communicate via uart.
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Reply #2

mserdag

Argentina
8 Posts

Posted - 03/31/2023 :  08:22:39  Show Profile  Reply with Quote
Hello, thanks for your answer, arduino one has a usb port with a 2303 adapter similar to the ch340, but it does not communicate with the emf, also try with an arduino due that has a native usb port, but it does not either, just get me to communicate with the computer.
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Reply #3

EmfDev

2143 Posts

Posted - 04/03/2023 :  12:44:59  Show Profile  Reply with Quote
Our engineer said even ch340 to ch340 also does not work as those are slave devices and only works with the driver. You need to connect the Rx/Tx of the arduino directly to the tx/rx of the emf390 cpu.
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