Arduino robotics #1 - motor control
Clusterbot is Lonnie Honeycutt's first autonomous robot, built on a tight budget to teach practical motor control. This post explains why you cannot drive motors directly from an Arduino, how to wire and enable the Toshiba TB6612FNG motor driver, and offers hands-on PWM and calibration tips for getting smooth motion from cheap Mabuchi FA-130 toy motors.
A simple working I2C (TWI) level shifter
When interfacing 3.3V and 5V boards, Dr Cagri Tanriover shows a no-fuss MOSFET solution to keep I2C talking across voltages. The post walks through using the NXP MOSFET level-shifter idea with BS170 transistors and 10 kΩ pull-ups, notes it ran at 400 kbps for his setup, and includes a quick four-step test to verify the build before connecting microcontrollers.
Arduino robotics #1 - motor control
Clusterbot is Lonnie Honeycutt's first autonomous robot, built on a tight budget to teach practical motor control. This post explains why you cannot drive motors directly from an Arduino, how to wire and enable the Toshiba TB6612FNG motor driver, and offers hands-on PWM and calibration tips for getting smooth motion from cheap Mabuchi FA-130 toy motors.
A simple working I2C (TWI) level shifter
When interfacing 3.3V and 5V boards, Dr Cagri Tanriover shows a no-fuss MOSFET solution to keep I2C talking across voltages. The post walks through using the NXP MOSFET level-shifter idea with BS170 transistors and 10 kΩ pull-ups, notes it ran at 400 kbps for his setup, and includes a quick four-step test to verify the build before connecting microcontrollers.
Arduino robotics #1 - motor control
Clusterbot is Lonnie Honeycutt's first autonomous robot, built on a tight budget to teach practical motor control. This post explains why you cannot drive motors directly from an Arduino, how to wire and enable the Toshiba TB6612FNG motor driver, and offers hands-on PWM and calibration tips for getting smooth motion from cheap Mabuchi FA-130 toy motors.
A simple working I2C (TWI) level shifter
When interfacing 3.3V and 5V boards, Dr Cagri Tanriover shows a no-fuss MOSFET solution to keep I2C talking across voltages. The post walks through using the NXP MOSFET level-shifter idea with BS170 transistors and 10 kΩ pull-ups, notes it ran at 400 kbps for his setup, and includes a quick four-step test to verify the build before connecting microcontrollers.
