Anet A8 Controller's Microprocessor Replacement

thingiverse

Problems: When I tried to upgrade the Anet A8 printer, I forgot to turn off the power supply and make the main controller chip damaged. Solved: Replace the chip and re-flash it. Steps: 1st: Solder out the damaged chip and replace it. Take out your power supply, it will be used to power your controller board when re-flash the firmware. 2nd: If you already have an AVR ISP programmer, so skip this step. If you have an Arduino around, follow this link: http://make.kosakalab.com/make/electronic-work/avrisp-mk2/uno-r3_avrisp-mk2_en/ And if you don't have any ISP programmer or Arduino board, skip all of this post. :v or find one. 3rd: Install AVR Studio. Then open Tool>Device Programming. Plug in ISP programmer that you have from 1st step. Connect ISP connect pins from ISP programmer to Controller board. Pinout in the above picture. Programming parameters: Fuse: 0xFD;0xDA;0xD6 (from up to down in programming fuse tab, VERY IMPORTANCE!!!) Memory: Find the attached files. MY MISTAKE: I've flashed wrong fuse bytes, the AVR Atmega1284P chip cannot be recognized by ISP programmer. I must supply a clock source to XTAL1 pin of chip while re-flash the fuse byte. Pls cmt if you had this problem! Finish! Goodluck If have any problem, pls cmt!