Programming pro mini by Leonardo

Other Hardware 3rd Party Boards
1

My USB TTL doesn't have DTR PIN and I read this :Arduino Leonardo as ISP

I connect the wire like this

First time I programming the empty code, it's successful

void setup() {
}

void loop() {
}

but when I programming the bluetooth code, it show

avrdude: verification error, first mismatch at byte 0x0002
         0x24 != 0x64
avrdude: verification error; content mismatch

and I programming the empty code again it's fail

avrdude: verification error, first mismatch at byte 0x0002
         0x24 != 0x34
avrdude: verification error; content mismatch

I have been test 2 board, always show this error message

2

So, did you do This:

1- Create a new folder in "hardware" with the name of leofix
2- Open a text editor and paste this code (picture 2):

arduinoispleo.name=Arduino as ISP (Leonardo)
arduinoispleo.communication=serial
arduinoispleo.protocol=arduino
arduinoispleo.speed=19200

Save the file as programmers.txt (see picture 3)

Next we connect some wires to our Leonardo (picture 4):
Digital Pin 10,1(TX),0(RX)
ICSP MISO,5V,SCK,MOSI,GND (see 6pin pinout on picture 5)

AND did you change the IDE board type to match: Arduino as ISP (Leonardo)?

You may need to drop back to a lower level of ArduinoIDE as I have not tried such a thing on 1.6.6 ... The author was using 1.0.5

Please buy a decent FTDI serial-USB ...

Ray

3

mrburnette:
Please buy a decent FTDI serial-USB ...

Or a decent CH340.

Much cheaper and just as effective, and you do not have to worry so much about the vigilante manufacturer fouling up your computer. :grinning:

4

Paul__B:
Or a decent CH340.

Much cheaper and just as effective, and you do not have to worry so much about the vigilante manufacturer fouling up your computer. :grinning:

I agree on the CH340G - but that's not a CH340G-based adapter you linked to! You can even see the part number on the chip in your picture.....

5

Oh well, CP2012 - even better! :grinning:

(I believe it has a better specification on the 3.3 V regulator.)