This is a brand new, heavy-duty mini (3.5mm, 1/8") stereo audio, male to male cable. Both ends of the cable have a male 3.5mm mini plug (the kind that plugs into a portable CD player). This cable works great for stereo headphones, speakers, microphones etc.
The B3 Compact charger is a very simple to use charger for 7.4 2S and 11.1 3S battery packs. No need for additional power supplies or 12v batteries as this little unit has its own built in power supply that can be powered with 100-240v.
2WD self balancing robot! This kit is a perfect plataform for learning Arduino, PID control, serial communications(Serial, I2C, SPI), PWM signals, IMU filtering, etc.