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1. #Build a construct serial cloner how to#
2. #Build a construct serial cloner install#
3. #Build a construct serial cloner update#
4. #Build a construct serial cloner software#
5. #Build a construct serial cloner mac#

But then you need special software (and today, also special hardware) on the PC side.īack when all PCs had a parallel port, a simple self-soldered cable called X1541 cable was all that's needed. Special software on the PC driving the IEC bus through the parallel port could then emulate a floppy, so you could transfer data. BUILD A CONSTRCUCT SERIAL CLONER SOFTWARE Today, PCs don't come with a parallel port, and the USB-to-parallel converters don't offer the same flexibility as an in-built parallel port, so the modern equivalent would probably be a RaspPi or something similar with a level converter, and a port of the software.

I found at least one project ( CBM PI1541) with that approach.In addition to the sketches that you load onto your Arduino using the IDE, Arduino UNO (and newer) boards use a separate micro controller loaded with separate firmware for the purpose of communicating via USB.

#Build a construct serial cloner how to#

Here is how to build and program the stock Arduino firmware, which is useful when building an Arduino clone or for converting the UNO into something other than a serial USB device. The Arduino UNO has two microcontrollers: the ATMEGA328 is the one used to store and run your sketches, and the ATMEGA8U2 is the middle man between USB and the serial IO of the ATMEGA328. By default, the ATMEGA8U2 contains firmware that makes the UNO appear as a serial USB device. Arduino boards prior to the UNO used a non-programmable FTDI chip for this purpose, but it is the replacement of this part with a programmable one that allows the UNO to appear as a device other than a serial port by loading it with new firmware. Read more about it in Lady Ada’s UNO FAQ.

#Build a construct serial cloner mac#

It is possible to re-program an Arduino using Mac and Windows, but the procedures here are for Ubuntu 12.04. A soldering iron, solder, etc., and 6 x 0.100 pin headers.īy default, the ATMEGA8U2 on an UNO is loaded with a DFU bootloader and the LUFA USB stack configured as a serial device.Procedures will be shown for the STK500 but any avrdude ISP programmer will work.

#Build a construct serial cloner update#

While it is possible to update the USB code using the DFU loader, the only way to program the DFU code is via ISP. See Lady Ada’s UNO FAQ for information about the ATMEGA8U2 and where to add the header.Ĭonnect the ISP cable to the new header and check that everything is working: $ avrdude -P /dev/ttyS0 -c stk500v2 -p at90usb82 -FĪvrdude: AVR device initialized and ready to accept instructions Your ISP programmer should already be setup and working if you can successfully build and burn the bootloader, but since the bootloader is installed on the ATMEGA328 chip, and the USB subsystem is controlled by the ATMEGA8U2 chip, you cannot use the same ISP header.įortunately the UNO contains a footprint for adding the header – you just need to solder one in. Reading | # | 100% 0.01sĪvrdude: Expected signature for AT90USB82 is 1E 93 82 Since avrdude doesn’t officially support the ATMEGA8U2, specify the at90usb82 part instead and use the -F flag to tell avr to ignore the device signature. Make sure the device signature matches (0x1E9389). If it reads 0x1E950F, you have the ISP connected to the ATMEGA328, not the ATMEGA8U2. If you program the USB code onto the ATMEGA328 by accident, you’ll overwrite the bootloader.

#Build a construct serial cloner install#

You’ll need version 100807, even though there are newer versions.

Now modify the DFU and USB firmware makefiles to use LUFA and the STK500 programmer: I like to unzip it into $SRC/hardware/arduino/firmwares. Set the LUFA path and avrdude parameters as necessary for your setup. Update the UNOĪs a final test of your hardware setup, upload the pre-built firmware to the ATMEGA8U2. cd $SRC/hardware/arduino/firmwares/atmegaxxu2Īvrdude -p at90usb82 -F -P /dev/ttyS0 -c stk500v2 -U flash:w:UNO-dfu_and_usbserial_combined.hex -U lfuse:w:0xFF:m -U hfuse:w:0xD9:m -U efuse:w:0xF4:m -U lock:w:0x0F:m BUILD A CONSTRCUCT SERIAL CLONER UPDATE This will write both the DFU bootloader and the USB serial code in one pass. BUILD A CONSTRCUCT SERIAL CLONER SOFTWAREĬheck that you can still upload sketches to the UNO using the Arduino IDE.BUILD A CONSTRCUCT SERIAL CLONER UPDATE.BUILD A CONSTRCUCT SERIAL CLONER INSTALL.BUILD A CONSTRCUCT SERIAL CLONER HOW TO.