By Backstop Media, Rick Waldron
ISBN-10: 1457186950
ISBN-13: 9781457186950
JavaScript Robotics is at the upward push. Rick Waldron, the lead writer of this booklet and author of the Johnny-Five platform, is on the vanguard of this stream. Johnny-Five is an open resource JavaScript Arduino programming framework for robotics. This ebook brings jointly fifteen cutting edge programmers, each one making a exact Johnny-Five robotic step by step, and supplying assistance and tips alongside the best way. adventure with JavaScript is a prerequisite.
Read Online or Download Make: JavaScript Robotics: Building NodeBots with Johnny-Five, Raspberry Pi, Arduino, and BeagleBone PDF
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Extra resources for Make: JavaScript Robotics: Building NodeBots with Johnny-Five, Raspberry Pi, Arduino, and BeagleBone
Example text
In our next exercise, we are going to connect an external LED to BeagleBone. This requires a few components. You can get these easily in a local electronics shop or online websites like sparkfun or mouser: • LED – We need a single LED for this exercise. An LED is actually a Light Emitting Diode. They allow flowing current in one direction only. When current passes through them, they glow. When connected in the opposite direction, no current is passed through. • Male-to-male jumper wires – We need jumper wires to connect BeagleBone and components through a breadboard.
Plug one end of the black jumper cable in the same row that we plugged the negative end of the LED. Plug another end to pin number 2 on the P8 header. Let's call it P8_2 pin. Now, P8_2 pin is connected to the negative end of the LED. [ 37 ] Blinking External LEDs Circuit analysis GPIO pin P8_10 is connected to the positive end of the LED through the resistor. The resistor is reducing current to protect the LED. The negative end of the LED is connected to pin P8_2. Pin P8_2 is actually a ground/negative pin.
Not all extension pins are GPIOs. Some pins are reserved to deal with analog components. Some pins are power and ground pins. BeagleBone SRM and Schematic diagram give details of which extension pin is connected to which of the processor pin. Many sensors/components require an external power supply to operate. Power supply can be given to these sensors via power and ground pins. 3 volts and 5 volts pins to power up sensors with that voltage level. [ 33 ] Blinking External LEDs The AM335X processor has four banks of 32 GPIO pins each.
Make: JavaScript Robotics: Building NodeBots with Johnny-Five, Raspberry Pi, Arduino, and BeagleBone by Backstop Media, Rick Waldron
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