I want to build my own programmer using a 328P running the arduinoISP sketch, and rs232 to hook it up to the computer I want to use the arduino IDE to program the target (using the menu entry "upload with programmer")
I gave this idea a try on a breadboard and it doesnt seem to work - "avrdude: usbdev_open(): did not find any USB device "usb"
Did anyone try this idea, and get good results? Or does the arduinoISP sketch only work via usb?
Some more details for those that are still reading: Mac Running IDE 103, arduinoISP sketch is the adafruit version (works on an Uno board) selected the correct board, selected the correct serial port, selected arduinoISP I verified the serial communication is working (9600 baud with another sketch) Hardware is shown on http://avrprogrammers.com/bld-avr-arduino-isp-232.php
Why do I want to do this? rs232 allows for longer cables than usb, and you can easely solder the connectors yourself. I need to bridge some distance between the computer and the arduino/328P modules i want to (re)program