Picture of Usb to Serial/TTL  adapter
pic 2.jpg
hello guys this is my first post so bear with me. I order a usb to serial adaptor  for $1.78 from ebay and wanted to try and make it work. since there is no information from the seller exept that is based on the PL2303. Since we have no info and no drivers I decided to google and I found a driver that might work  it comes from prolific  http://www.prolific.com.tw/UserFiles/files/PL2303_Prolific_DriverInstaller_v1_8_0.zip.

Step 1: Drivers installation

Picture of Drivers installation
we download the driver and we unzip the files. then we run the driver installation program. I am not going to post pictures and step by step instructions because all you have to do is click "ok" and "install".
nodoubtman8 months ago

Hi! When connected as you mentionned i cannot access tools menu from arduino

thank you!


verdelj (author)  nodoubtman8 months ago
Try to create a new sketch and see if it works.

i cannot go into serial monitor when the adapter is connected.. :(

Ryan Hebron2 years ago
did you know TTL stands for transistor transistor logic?
verdelj (author) 2 years ago
well the pl2303 has pin 3 wich is RTS (Request to send ) and DTR (Data terminal Ready) on pin 2 that can be used to interface with I2C .....
DTR to i2c-SDA and
RTS to i2c-SCLK
..I would need to go back and take a look at my c++ books but I think I can write some software that would let me talk to some I2C modules . I think I have a ds1307 somewhere.
PS1182 years ago
Very promising little gizmo. I'm thinking next you need to figure out a CLK pin to do some serious damage. (Directly connect I2C, SPI, etc, chips)