![]() This guide explains how to get the best out of this forum. Get the best out of this forum Installation & Troubleshooting Long version.Please take a few moments to Learn and Use the Forum. Unfortunately since I was using a standard library when developing it on the Arduino, it was all made for a 16MHz clock.OP is on a 7 day holiday until he READS THIS I used that frequency because it usually makes writing serial timing easier since the baud rates are even divisions of this frequency. The problem? When I moved the project, I used a 14.7456MHz oscillator. I had a project where the serial communications simply wouldn't work after I moved the project off the Arduino board. ![]() I have run into the avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51 (or resp=0圆8 or resp=0x? where ? can be any number of different numbers) and the one thing that nobody seems to mention, which I finally figured out on my own is that serial is VERY timing dependant - and as such, if your serial library derives it's timing from the processor's clock, then your clock must be running at the same frequency. avrdude: verification error, first mismatch at byte 0x0002 0xcc != 0xa6 avrdude: verification error content mismatch avrdude: safemode: hfuse reads as D9 avrdude: safemode: Fuses OK (E:FF, H:D9, L:9F) avrdude done. I added a 10uF capacitor between VCC (+5V) and RESET (PWM10) on the MEGA2560 in order to udpate a USBaspv2 firmware and this is what I get:Īvrdude: AVR device initialized and ready to accept instructions Reading | # | 100% 0.02s avrdude: Device signature = 0x1e9307 (probably m8) avrdude: safemode: hfuse reads as D9 avrdude: reading input file "/Users/alex/Desktop/USBasp2.hex" avrdude: writing flash (4700 bytes): Writing | # | 100% 6.67s avrdude: 4700 bytes of flash written avrdude: verifying flash memory against /Users/alex/Desktop/USBasp2.hex: avrdude: load data flash data from input file /Users/alex/Desktop/USBasp2.hex: avrdude: input file /Users/alex/Desktop/USBasp2.hex contains 4700 bytes avrdude: reading on-chip flash data: Reading | # | 100% 3.33s avrdude: verifying. If that still doesn't work you can ask for help on the forum, maybe ur arduino microchip is dead ? If that still doesn't work you can try to bootload it again and see if it was an error in the primary bootloading.Ħ.If that still doesn't work you can try to use ur other arduino ( if you have another) to program the second arduinoħ. " and hod it for 2-10 seconds ( it depends on hardware how long you need to hold it)ĥ. If that still doesn't work you can try to press reset after the " binary sketch size. If that still doesn't work you can try to hold the reset button on the arduino, press upload in the arduino IDE and release the reset button when the "binary sketch size. When the "binary sketch" stuff appears you quickly put the usb cable in the arduino and see if it uploads without and error.ģ. If that does not work you can try to put the usb cable in the computer but not in the arduino. Press reset button on your arduino when "Binary sketch size: xxxx bytes (of a xxxxxxx byte maximum)" appears.Ģ. To fix this you can try (depends on hardware etc.) :ġ. This means the arduino IDE could not reset the arduino and so the upload has failed. When your arduino is not set up whit auto-reset (DTR) you will have difficulties uploading new programs to the arduino.Īnd you will get this error: " avrdude: stk500_getsync(): not in sync: resp=0x00Īvrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51 " The High resolution picture of how to hook the arduino up : For the exact pinout of an Atmega 168/328 chip look : This is how you need to wire up your arduino mega 2560 to an Atmega 168/328 (same pinout) microchip : See picture above To know which pinout is needed for the Arduino Mega 2560 the website has a special webpage : ( ). ![]() One of the difficulties of the mega board is that all the pins are different so most tutorials who are aimed at the UNO board or the Duemilanove or Diecimila are useless because the Mega board pinout is different. some wires to connect the arduino mega 250 to your homemade arduino. Breadboard or pcb made atmega chip arduino When i build my Atmega328p-pu on a circuit board for my moped i needed to bootload it.īecause i have none external programming equipment i needed to use my Arduino Mega 2560 as ArduinoISP ( ). ![]()
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