4WD 無指向性 Arduino対応モバイルロボットキット

This product arrive in a week and it is in excelent conditions

Important hint: For writing a hex file to the robot in USB serial mode the bridge connector RS 485 on the extension shield has to be removed. See also: https://translate.google.com/translate?hl=de&sl=auto&tl=de&u=https%3A%2F%2Fwww.vstone.co.jp%2Fproducts%2Fnexusrobot%2Fqa.html If this is not done, following error occurs: avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x18 The correct call than to write is: avrdude -v -v -v -v -CD:"\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf" -v -patmega328p -carduino -PCOM3 -b57600 -D -Uflash:w:C:\Test.hex:i Beside that the robot works as expected.

Company I work for purchased four of these for the showcase. Robot is good quality and works fine. However, there are no spare pins left to extend this project. OOTB you can use only serial pins for other communications. No pins left for additional sensors. So if you want to add other components you need to use multiplexer to off load drive direction pins and free I2C pins.