Conection Lilypad with FTDI

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1

HELLO!! I’m doing a school project with Lilypad! I have a question about connecting the simple lilypad board … and where I live I couldn’t get FT232 !! but I have a CP2102. I don’t know exactly how to connect it … any help is welcome! I made the following connection:

CP2102 has the next pins: DTR, RXD, TXD, + 5V, GD, 3V3

lilypad CP2102

DTR DTR

TX RX

RX TX

VCC +5V

GND -

GND GND

link to the the back part of the CP2102.

https://http2.mlstatic.com/D_NQ_NP_6940 … 020-O.webp

I saw an image that shows the connection to the lilypad with the FTDI 232 and I see that 1 pin of the GND of the lilypad is connected to the CTS of the FTDI but in my adapter the CTS is not a pin, it is a female “island” (in the picture looks better).

And the DTR pin of the lilypad is connected to the RTS pin of the FTDI232. A teacher tells me that it is ok if I connect the lilypad of the DTR pins with the DTR of my CP2102. I am so confused :frowning:

greetings from Buenos Aires!

2

The board in your picture has a slightly different pinout than you mention, but as long as you use jumper wires and connect your CP2120 to a Lilypad the way you show in your text, it should work. It’s OK to not connect CTS. :slight_smile:

3

thanks you so much!! :slight_smile:

4

Yeah, you just need to use DTR, RX and TX with power pins of course in order to upload code to Arduino Lilypad. No need to use DTS.

Btw I use Arduino UNO for programming Lilypad or Nano, the extra step is to connect the reset pin but its simple.

5

Your connection is alright. Power pins, tx,rx and DTR should be used. No need to bother with the other pins.