arduino as isp

Dear readers, I followed this code at here and built its circuit. However, the stepper motor does not get enough power or even torque or speed so that when I can stop the wheels easily by slightly touching them? Are there any solutions for this? I have checked that my battery are all...

Update: The issue is resolved now. Please check my update here: https://forum.allaboutcircuits.com/threads/8051-not-working-after-flashing-the-program.177718/post-1613102 for details on the issue. The circuit is now successfully implemented, even on hardware. I am a beginner trying to learn how...

I cannot seem to program the ATtiny84a with Atmel Studios 7 with an Arduino Uno as the programmer. I got Atmel Studios 7. I opened the Sparkfun Servo Trigger solution. It asked me to upgrade or something so I said yes. I do not have a programmer but I do have an Arduino Uno with an ATMEGA328P...