Wireless serial USB dongle
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With two cheap JDY-40 modules you can easily establish a wireless serial connection without any need for additional…
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With two cheap JDY-40 modules you can easily establish a wireless serial connection without any need for additional configuration or software.
This dongle combines a JDY-40 and a CP2102 USB to serial module. I use it mainly to program my DPS3005 power supply, which I equipped with a counterpart JDY-40 module internally. However, you can use the dongle for any other serial connection you would normally establish with a USB-TTY module and serial cable, e.g. for wireless serial output of some (3.3V) Arduino.
Parts list
- CP2102 USB to serial module
- JDY-40 wireless serial module (a JDY-41 might work, too, but I haven't tested it)
- 8.7 x 3.7 x 3.7 SPDP switch
The switch is for changing between the JDY-40's AT and serial transmission mode, you'll need it if you use more than one pair of these devices to make them use different channels. For the AT mode, you can use the Arduino IDE's serial monitor, as a dedicated application on Linux, I recommend cutecom, as I could not get other options like PuttY, screen, etc. to work. See this page by Ben Emmet for more info on the JDY-40.
Connections
CP2102 <> JDY-40
3,3V <> VCC
Tx <> Rx
Rx <> Tx
GND <> GND/CS (connect GND and CS)
The switch goes to 3,3v, SET, and GND/CS.
Category: Electronics