Burned Arduino Serial Chip, Replacement Help

So i have burned arduino serial chip and i bought something for his replacement. Its on the link below

http://www.mikroe.com/add-on-boards/communication/usb-uart2/

I think i know how to use it, but i need some help with the details

UART 2 Board to Arduino Uno R2 RX -----> TX (Pin1) TX -----> Rx (Pin2) 5v -----> Vin GND -----> GND RTS -----> ???? CTS -----> ????

Now what to do with the RTS and the CTS pins? And what do these pins do ?

And will this work ? :grin:

RTS -----> RESET
CTS -----> GND

If it’ll work, well it depends on how burned your arduino might be =)


If you haven’t brought it already, you can use this: http://www.ebay.com/itm/190685792376?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2648 it’s cheaper =)

Not totally burned :slight_smile: , when i plug in usb ( in to the original port ) i get power and the last code that was uploaded to the AtMega is running but i cant upload a new one and the pc doesn’t detect the Arduino.

Now i dont understand what the RTS/CTS (Request to Send / Clear to Send) pins stand for and therefor i dont know how to use them :~

Why are you suggesting RTS -----> RESET , CTS -----> GND?
Some say i need to put RTS -----> CTS…

On an FTDI you have CTS pin, which is connected to GND (in some cases, for example in the FTDI itself you don't need to connect it because it's internally connected, but i don't know about that one)

RTS -----> RESET (Because you need to reset the IC before flashing it) Also i'm sorry i forgot but you need 0.1uF capacitor in between. http://arduino.cc/en/Guide/ArduinoMini

RTS -----> RESET

No - Use DTR to DTR, which goes thru a 0.1uF cap to Reset.

I use them all the time: http://www.crossroadsfencing.com/BobuinoRev17/