Javascript on Arduino

Javascript on Arduino Keith Bloomfield - Dev9

Javascript on Arduino ● Told from experience – motivation – approach – lessons learned ● Talking points: – hardware – software – design patterns – hardware/software integration – code samples

Javascript on Arduino Motivation

Javascript on Arduino Motivation SainSmart palletizing robotic arm

Javascript on Arduino Motivation SainSmart palletizing robotic arm - $118.23

Javascript on Arduino Motivation SainSmart palletizing robotic arm - $118.23 Pros ● Much cheaper than rival hobby robotic arms ● Performs surprisingly well in terms of speed

Javascript on Arduino Motivation SainSmart palletizing robotic arm - $118.23 Cons ● Not much lifting power ● Difficult to replace parts ● No instructions

Javascript on Arduino Motivation IoT is the buzzword of the day

Javascript on Arduino Motivation IoT is the buzzword of the day But it isn't entirely new ● Parts are cheaper ● Tutorials are available ● Technology is more developer friendly ● Similar reasons why many people became software developers ● We will get back to this

Javascript on Arduino Arduino - Is a microcontroller (Open source prototyping platform) – A small computer on a single integrated circuit (memory, processor, I/O peripherals). - One of several competing products Shield - Extends capabilities of the Arduino - Requires a driver - Requires soldering

Javascript on Arduino Javascript is powering devices ● Johnny-five http://johnny-five.io ● Cylon http://cylonjs.com ● Espruino (Javascript on the metal) http://www.espruino.com/ ● and more!

Javascript on Arduino Javascript is powering devices Firmata: It's a protocol, it's a library...

Javascript on Arduino Javascript is powering devices Firmata: It's a protocol, it's a library... - Enables communication between a computer and a microcontroller using the midi message format: http://www.midi.org/techspecs/midimessages.php

Javascript on Arduino IoT is the buzzword of the day?

Javascript on Arduino IoT is the buzzword of the day? The cloud acts as the OS of the device.

Javascript on Arduino Software: johnny-five: JS Robotics & IoT framework compulsive ('13) – Loops and delays without traditional timers. Time based event loop process queue temporal? (TODO '14) – Non-blocking, temporal task sequencing. Javascript is powering devices

Javascript on Arduino johnny-five - has a useful REPL (read-eval-print loop) - supports a growing number of boards, shields, sensors, actuators Javascript is powering devices

Javascript on Arduino Hardware: Arduino Mega 2560 AdaFruit Servo Shield Servos IR motion sensor Javascript is powering devices

Javascript on Arduino Hardware: Load Sensor HX711 Load Cell Amp MultiColor Led HUZZA ESP8266 Wifi breakout Javascript is powering devices

Javascript on Arduino Powered by: Arduino: Basic arm motion only (4) 1.5V AA Batteries: Arm with augmented body 5V 2A power supply: Arm, lid, motion sensor. Struggles lifting when all 3 in operation at the same time. 5V 10A power supply: Sufficient Servos require lots of power!

Javascript on Arduino Be careful about mishaps. The larger/stronger the robot, the more severe the accident. Accidents can quickly disable functionality. Servos require lots of power!

Javascript on Arduino Be careful about mishaps. The larger/stronger the robot, the more severe the accident. Accidents can quickly disable functionality. Recovery may take several days (new hardware in the mail) Servos require lots of power!

Javascript on Arduino Be careful about mishaps. The larger/stronger the robot, the more severe the accident. Accidents can quickly disable functionality. Recovery may take several days (new hardware in the mail) + Add an emergency stop early Servos require lots of power!

Javascript on Arduino When composition relies heavily on found components, and the idea is ad hoc, hardware refactoring/reassembly is frequent. Lesson: It's easy to end up in the weeds

Javascript on Arduino When composition relies heavily on found components, and the idea is ad hoc, hardware refactoring/reassembly is frequent. + Plan well, measure accurately and thoroughly. Lesson: It's easy to end up in the weeds

Javascript on Arduino When composition relies heavily on found components, and the idea is ad hoc, hardware refactoring/reassembly is frequent. + Plan well, measure accurately and thoroughly. + Expect to spend considerable time refactoring if you are planning as you go. Lesson: It's easy to end up in the weeds

Javascript on Arduino + Refactor small, iterative/incremental, stable as possible Lesson: It's easy to end up in the weeds

Javascript on Arduino + Refactor small, iterative/incremental, stable as possible + Use a board to track tasks Lesson: It's easy to end up in the weeds

Javascript on Arduino + Refactor small, iterative/incremental, stable as possible + Use a board to track tasks + Keep changes in sync with the REPL Lesson: It's easy to end up in the weeds

Javascript on Arduino Couples sensory information to action selection (what to do next) in an intimate bottom-up fashion. Subsumption Architecture

Javascript on Arduino Subsumption Architecture Couples sensory information to action selection (what to do next) in an intimate bottom-up fashion. Behaviors prioritized and interruptive.

Javascript on Arduino Subsumption Architecture Couples sensory information to action selection (what to do next) in an intimate bottom-up fashion. Behaviors prioritized and interruptive. Lejos: Robot accessed directly through behaviors, focus on looping actions broken by flipping a boolean to false. Static methods/fields for convenience

Javascript on Arduino Couples sensory information to action selection (what to do next) in an intimate bottom-up fashion. Behaviors prioritized and interruptive. Lejos: Robot accessed directly through behaviors, focus on looping actions broken by flipping a boolean to false. Static methods/fields for convenience Challenge: Action selection implementation Subsumption Architecture

Javascript on Arduino Hardware in terms of stateful objects On node.js? Subsumption Architecture

Javascript on Arduino Johnny-five: Animation Subsumption Architecture

Javascript on Arduino REST + JSON? ●

Javascript on Arduino REST + JSON? ● CoAP (Constrained Application Protocol) http://coap.technology/ ● QUIC (Quick UDP Internet Connections) https://www.chromium.org/quic ● CBOR (Concise Binary Object Representation) http://cbor.io/ ● Apache thrift https://thrift.apache.org/ ● protobuf (Protocol Buffers – serializing structured data) https://github.com/google/protobuf

Javascript on Arduino - Costly, prohibitive ramp-up time ● Inexpensive, interoperable, plug-and- play components ● Expensive computation occurs in the cloud ● The only limitation is creativity

Javascript on Arduino The Robot...

Javascript on Arduino - Detects presence of cat

Javascript on Arduino - Detects presence of cat -Waits for cat to do its business

Javascript on Arduino - Detects presence of cat -Waits for cat to do its business -Warns off nearby cat(s)

Javascript on Arduino - Detects presence of cat -Waits for cat to do its business -Warns off nearby cat(s) -Scoops the clumps, deposits them in bin

Javascript on Arduino - Detects presence of cat -Waits for cat to do its business -Warns off nearby cat(s) -Scoops the clumps, deposits them in bin - Levels the mounds

Javascript on Arduino - Detects presence of cat -Waits for cat to do its business -Warns off nearby cat(s) -Scoops the clumps, deposits them in bin - Levels the mounds (v2) Tracks litter level in bin (v2) Notifies user once bin is full (v2) Detects clumps (v2) Wireless

Javascript on Arduino Demo + Q&A Github: github.com/kthblmfld/poopscavator Demo: https://www.youtube.com/watch?v=kCbXBw0zStk

Javascript on Arduino

More Related Content

What's hot

Similar to Javascript on Arduino

Recently uploaded

Javascript on Arduino