In my project I want to connect my pc to an RF transmitter. The receiver will be connected to an arduino on my robot. However most of the RF modules I looked up couldn't be directly connected to my computer- in all of them I needed to use an arduino on the transmitter end too. Then I came across this:

EWRF 3022

Can this be directly connected to my computer? If so, how is it done?

  • How many modules are you going to ask the same question for? You can find out for yourself: Look to see if the module has a PC interface - that is (generally) a USB or RS-232 interface. If it has then yes you can. If it hasn't then no you can't.
    – Majenko
    Oct 30, 2016 at 17:26

1 Answer 1


If you use a USB to TTL UART adapter, such as an FT232 dongle, then yes you can communicate to it from a PC.

It will not directly connect to a PC though without you getting that extra hardware.

  • Thanks. Also, what are some other similar, more popular, modules having a PC interface? I mean, is there one which is more commonly used for this purpose? Oct 30, 2016 at 18:58
  • The only common wireless systems that have a direct PC are WiFi and Bluetooth. Anything else people design a dongle.
    – Majenko
    Oct 30, 2016 at 19:00
  • What about xbees? They have a USB explorer board, by which they can be directly connected to a pc. The only problem with them is the cost. Oct 30, 2016 at 19:05
  • That is really no different to using an nRF24L01 with an Arduino, or whatever that is you linked to above with a TTL to UART adapter. I don't see what you have against using extra hardware, especially when you yourself then suggest using extra hardware.
    – Majenko
    Oct 30, 2016 at 19:10
  • In another answer, you said that using a TTL to UART adapter will require writing more software, right? If I remember what I read correctly, the xbees involve significantly less coding right? How so? Oct 30, 2016 at 19:18

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