[BlocksExtension]

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calibrate angles – base () link1 () link 2 () rotational () gripper ()

Description

Calibrate angles – base () link 1 () link 2 () rotational () gripper () is a stack block available in Robotic Arm extension for evive and other Arduino boards. This block should be included every time you work with the robotic arm as this block calibrates the angles of the servo motors and saves it in the memory of evive.

Input Parameters

Enter the error angle of base servo.
Enter the error angle of link 1 servo.
Enter the error angle of link 2 servo.
Enter the error angle of the rotational servo.
Enter the error angle of the gripper servo.

Note: This block is available in both Stage and Upload mode.

Example

Here, in the given script, we’ll be calibrating the entire robotic arm i.e. all the six servos before working it. Write the script given below to calibrate all the servo angles.

Run the script by clicking on the green flag.
If the robotic arm is straight, keep the base angle as 0° in the calibrate angles blocks. If it is not straight, then change the base offset angle and run the script. Use the trial and error method to calibrate the servos.on block. For example, if the base angle is about 15° towards the left, then set the base angle as -15° in the calibrate angles block.
Similarly, calibrate the rotational servos. If it is straight, keep the rotational angle as 0°. If not, then change the rotational servo offset block.
Now, it’s time to calibrate the link servos. Using a scale, measure the distance of the end effector from the head of Rotational Servo to the base center in the Y and Z directions. If it is 200mm in both directions, then it’s ok; otherwise, change the link 1 and link 2 angles in the calibrate angles block, so that the distance is 200mm along both the axes.

If you need to change any angle by more than 25 degrees, then disassemble the Robotic Arm and carefully reassemble it.

Run the script every time you calibrate a part.

Example

Touch Piano

The example demonstrates using the Quarky touch display to make touch piano.

Script

Output

Touch-Numbers

Dance Party

The example demonstrates how to run different actions with the Quarky touch sensor to make a disco party in PictoBlox.

Script

Output

Ultrasonic Sensor with Quarky

The example demonstrates how to use an ultrasonic sensor with Quarky.

Connections

Now we will connect the Ultrasonic Sensor to the Robot. The sensor and the robot have the following pins:

Ultrasonic Sensor Pins:
1. VCC
2. GND
3. Trig
4. Echo
Quarky Pins:
1. GND
2. V
3. D1
4. D2

We will start with connecting the ultrasonic sensor with Quarky using the 4 set wire provided in the kit. But, first, make the connection in the following way:

First, connect the VCC of the ultrasonic sensor with the V pin on the Quarky.
Connect the GND of the ultrasonic sensor with the Ground pin on the Quarky.
Connect Trig of the ultrasonic sensor with D1 pin on the Quarky.
Finally, connect the Echo of the ultrasonic sensor with the D2 pin on the Quarky.

Script

Output

Tobi Movement with Buttons – Python

The example demonstrates how to make the sprite movement with Quarky buttons.

Code

sprite = Sprite('Tobi')
quarky=Quarky()

while True:
  if quarky.readpushbutton("L"):
    sprite.move(-10)
  elif quarky.readpushbutton("R"):
    sprite.move(10)

Output

Touch Piano – Python

The example demonstrates using the Quarky touch display to make a touch piano in the Python Coding Mode.

Code

sprite = Sprite('Tobi')
quarky = Quarky()

while True:
  if quarky.ispadtouched("T1"):
    quarky.drawpattern("bbbjjbjjbjjbbjjbjjjbjjbjjjbjjbjjbbb")
    quarky.playtone("C4", 8)

  if quarky.ispadtouched("T2"):
    quarky.drawpattern("cccjcccjcjjjjcjcjjcccjcjjcjjjcjjccc")
    quarky.playtone("D4", 8)

  if quarky.ispadtouched("T3"):
    quarky.drawpattern("fffjfffjfjjjjfjfjjfffjfjjjjfjfjjfff")
    quarky.playtone("E4", 8)

  if quarky.ispadtouched("T4"):
    quarky.drawpattern("dddjdjdjdjjdjdjdjjdddjdjjjjdjdjjjjd")
    quarky.playtone("F4", 8)

  if quarky.ispadtouched("T5"):
    quarky.drawpattern("gggjgggjgjjgjjjgjjgggjgjjjjgjgjjggg")
    quarky.playtone("G4", 8)

Output

Ultrasonic Sensor with Quarky – Python

The example demonstrates how to use an ultrasonic sensor with Quarky.

Connections

Now we will connect the Ultrasonic Sensor to the Robot. The sensor and the robot have the following pins:

We will start with connecting the ultrasonic sensor with Quarky using the 4 set wire provided in the kit. But, first, make the connection in the following way:

First, connect the VCC of the ultrasonic sensor with the V pin on the Quarky.
Connect the GND of the ultrasonic sensor with the Ground pin on the Quarky.
Connect Trig of the ultrasonic sensor with D1 pin on the Quarky.
Finally, connect the Echo of the ultrasonic sensor with the D2 pin on the Quarky.

Code

sprite = Sprite('Tobi')
quarky = Quarky()

quarky.setultrasonicpins(1, 18, 19)
while True:
  sprite.say(quarky.getdistance(1))

Output

Dance Party – Python

The example demonstrates how to run different actions with the Quarky touch sensor to make a disco party in Python Coding Environment.

Code

sprite = Sprite('Cassy Dance')
quarky = Quarky()

import time

sprite.switchcostume('cassy-a')
sprite.gotoxy(0, 0)

while True:
  if quarky.ispadtouched("T1"):
    quarky.playsound("QuarkyIntro")

  if quarky.ispadtouched("T2"):
    quarky.showpattern("party colors")

  if quarky.ispadtouched("T3"):
    time.sleep(0.2)
    sprite.nextcostume()

  if quarky.ispadtouched("T4"):
    quarky.stopaudio()

Output

Biodegradable vs Non Biodegradable Waste

A waste management system that will differentiate the waste based on its type. If it detects biodegradable waste, the LEDs Quarky’s matrix will turn green. If it’s non-biodegradable waste, the LEDs will turn blue.

Script

Output

Object Detection on Stage

The example demonstrates how to run an object detection on the stage and show all the objects with confidence.

Script

Output

Detection at 0.3
Detection at 0.5
Detection at 0.8

Threshold Demonstration – Person Detection

The example demonstrates how to detect persons on the stage with different confidence thresholds.

Script

Output

Waste Classifier – Python

A waste management system that will differentiate the waste based on its type in Python Coding Environment. If it detects biodegradable waste, the LEDs Quarky’s matrix will turn green. If it’s non-biodegradable waste, the LEDs will turn blue.

Code

sprite = Sprite('Tobi')
od = ObjectDetection()
speech = TexttoSpeech()
quarky = Quarky()

od.video("on", 1)
od.enablebox()
od.setthreshold(0.5)

speech.setvoice('alto')
speech.setlanguage('en')

while True:
  od.analysecamera()
  
  if od.isdetected('banana'):
    quarky.drawpattern("ccccccccccccccccccccccccccccccccccc")
    speech.speak("Biodegradable Waste")
  
  if od.isdetected('bottle'):
    quarky.drawpattern("fffffffffffffffffffffffffffffffffff")
    speech.speak("Non Biodegradable Waste")

Output

waste

Object Detection on Stage – Python

The example demonstrates how to run an object detection on the stage and show all the objects with confidence.

Code

sprite = Sprite('Square Box')
obj = ObjectDetection()

obj.disablebox()
obj.setthreshold(0.5)
obj.analysestage()

sprite.gotoxy(0, 0)
sprite.setsize(100)
sprite.say(str(obj.count()) + " Object Detected", 2)

for object in range(1, obj.count() + 1):
  sprite.setx(obj.x(object))
  sprite.sety(obj.y(object))
  sprite.setsize(obj.width(object))
  sprite.say(obj.classname(object) + " with " + str(obj.confidence(object)), 2)

Output

Detection at 0.3
Detection at 0.5
Detection at 0.8

Person Detector – Python

The example demonstrates how to detect persons on the stage with different confidence thresholds.

Code

sprite = Sprite('Tobi')
obj = ObjectDetection()

obj.enablebox()
sprite.gotoxy(-180, -110)
sprite.setsize(100)

obj.setthreshold(0.3)
obj.analysestage()
sprite.say(str(obj.detectedcount("person")) + " Person Detected at 0.3 Threshold", 2)

obj.setthreshold(0.5)
obj.analysestage()
sprite.say(str(obj.detectedcount("person")) + " Person Detected at 0.5 Threshold", 2)

obj.setthreshold(0.9)
obj.analysestage()
sprite.say(str(obj.detectedcount("person")) + " Person Detected at 0.9 Threshold", 2)

Output

Body Part Counter

The examples show how to use Pose Recognition in PictoBlox to count the number of body parts detected in the body.

Script

Output

Air Draw

The example demonstrates how to use hand recognition and pen extensions to make an air draw game.

Script

Output

Finger Tracking

The example demonstrates how to use hand recognition to track the different parts of the fingers.

Script

Output

Clown Maker

The example demonstrates how to use human body detection to track the nose and make someone clown.

Script

Output

Finger Tracking – Python

The example demonstrates how to use hand recognition to track the different parts of the fingers in Python Coding Environment.

Code

thumb = Sprite('Thumb')
index = Sprite('Index')
middle = Sprite('Middle')
ring = Sprite('Ring')
pinky = Sprite('Pinky')

hand = Posenet()
hand.video("on", 0)
hand.enablebox()

thumb.switchcostume("ball-a")
thumb.setsize(50)
index.switchcostume("ball-b")
index.setsize(50)
middle.switchcostume("ball-c")
middle.setsize(50)
ring.switchcostume("ball-d")
ring.setsize(50)
pinky.switchcostume("ball-e")
pinky.setsize(50)

while True:
  hand.analysehand()
  
  if hand.ishanddetected():
    thumb.setx(hand.gethandposition(1, 4))
    thumb.sety(hand.gethandposition(2, 4))
    thumb.show()
    
    index.setx(hand.gethandposition(1, 8))
    index.sety(hand.gethandposition(2, 8))
    index.show()
    
    middle.setx(hand.gethandposition(1, 12))
    middle.sety(hand.gethandposition(2, 12))
    middle.show()
    
    ring.setx(hand.gethandposition(1, 16))
    ring.sety(hand.gethandposition(2, 16))
    ring.show()
    
    pinky.setx(hand.gethandposition(1, 20))
    pinky.sety(hand.gethandposition(2, 20))
    pinky.show()
  
  else:
    thumb.hide()
    index.hide()
    middle.hide()
    ring.hide()
    pinky.hide()

Output

Body Part Counter – Python

The examples show how to use Pose Recognition in PictoBlox to count the number of body parts detected in the body in Python Coding Environment.

Code

sprite = Sprite('Tobi')
pose = Posenet()

pose.video("on", 0)
pose.enablebox()

while True:
  pose.analysecamera()
  bodyPartCount = 0
  
  for i in range(21):
    if pose.isdetected(i, 1):
      bodyPartCount += 1
  
  sprite.say(str(bodyPartCount) + " Parts Detected")

Output

Clown Maker – Python

The example demonstrates how to use human body detection to track the nose and make someone clown.

Code

sprite = Sprite('Ball')
pose = Posenet()

pose.video("on", 0)
pose.enablebox()

while True:
  pose.analysestage()
  
  if (pose.isdetected(0, 1)):
    sprite.setx(pose.x(0, 1))
    sprite.sety(pose.y(0, 1))
    sprite.show()
  
  else:
    sprite.hide()

Output

Air Draw – Python

The example demonstrates how to use hand recognition and pen extensions to make an air draw game in the Python Coding Environment.

Code

sprite = Sprite('Pencil')

hand = Posenet()
pen = Pen()

hand.video("on", 0)
hand.disablebox()

pen.clear()
pen.setcolor([0, 255, 0])
pen.setsize(2)

while True:
  hand.analysehand()
  if hand.ishanddetected():
    if sprite.iskeypressed("space"):
      pen.down()
      sprite.setx(hand.gethandposition(1, 8))
      sprite.sety(hand.gethandposition(2, 8))
    else:
      pen.up()

Output

Sign Detection with Quarky

The example demonstrates how to use sign detection and make the Quarky show the detection on the LED.

Script

Output

Sign Detection – Tobi

The example demonstrates how to implement sign detection in PictoBlox.

Script

Output

Multiple Sign Detection

The example demonstrates how to find the closest sign from multiple sign detection and make the decision accordingly.

Script

Output

Object Tracking Robot

The example demonstrates how to make an object-tracking robot.

Script

Output

Home Automation – Light Control

The example demonstrates how to make smart home automation for light control using NLP and Speech Recognition.

Script

Output

QR Code Reader

The example demonstrates how to make a QR Code reader.

Script

Output

QR Code Reader – Python

The example demonstrates how to make a QR Code reader in the Python Coding Environment.

Code

sprite = Sprite('Square Box')
qr = QRCodeScanner()

qr.video("on flipped", 0)
qr.disablebox()

while True:
  qr.analysecamera()
  if qr.isdetected():
    sprite.setx(qr.xpos("center"))
    sprite.sety(qr.ypos("center"))
    sprite.setdirection(qr.angle())
    sprite.say(qr.codedata())
    sprite.show()
  else:
    sprite.hide()

Output

Pendulum Wand – Rotation

The example demonstrates how to make a sprite be fixed to a point but can rotate. The wand is hanging like a pendulum.

The center of the wand in the costume is the point of rotation.

The following code creates the simulation of the pendulum.

Output

Bell and Falling Balls

In this example, you understand the effect of the density, roughness, and bounce properties of the sprites. The ball falls from the top randomly, and the bell is fixed but can rotate.

Script of Bell

The bell center is changed to make it swing from the top.

Script for Ball

This script creates clones of the ball every 0.5 seconds.

This script assigns the properties of the clone.

Output

We will change the density of the bell and the ball in the block – set sprite density () roughness () bounce (). This will result in different simulations.

Bell is very light and the balls are very heavy: The inertia of the balls will affect the bell too much.
Bell is very light and balls are also very light: The bell is less affected by the ball. Gradually the bell slows down.
Bell is very heavy and the balls are very light: The bell is not affected at all. The balls are thrown without adding any effect on the bell.
Bell is very heavy and the balls are also very heavy: Same as option 2 – The bell is less affected by the ball. Gradually the bell slows down.

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[PictoBloxExtension]

calibrate angles – base () link1 () link 2 () rotational () gripper ()

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