ENGINO STEM70 - Sensors and Conditional Logic; Touch Sensor and IF;ELSE Statements

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Level Of Difficulty Level Of Difficulty

Procedure:

1. Find the instructions in pages 53-55 and

build the jeep car robot model.

2. Make sure you connect all

cables correctly. The touch

sensor must be connected

in port 3 of the ERP controller.

3. Open the ERP software and follow the

instructions in exercise 1. You can

use a function block to save the

subprogram of moving forward.

Once ﬁnished, send the program

to the ERP and test it. Save it as

“jeep forward”.

4. Add the necessary blocks on the program

you just made in order to create the program

of exercise 2. Save it as “jeep forward-turn”.

5. What happens if the model ﬁnds another

obstacle in its path? Follow the instructions of

exercises 3 and 4 to learn about the touch

sensor and the IF statement. Use this to

program your model, so that it reacts in every

obstacle it ﬁnds accordingly. Save the

program as “jeep touch-IF”

6. Create a more challenging program

with the if/else statement in

exercise 5.

Materials Needed:

- Engino Robotics PRO (STEM70).

- Computer with ERP software installed.

Procedure:

1. Find the instructions in pages 48-52 and

build the forklift robot model with its load.

Put motors’ switches in position II.

2. The ERP can connect wirelessly with

a smart device. To enable this feature,

push idle time button, ﬁnd the ERP’s

Bluetooth network through the

EnginoRobot BT app and connect.

3. You can use the app the same way as the

actual device. Test the digital buttons and

program your model according to exercise 1.

4. Upload the program on the

software of the computer (through

USB). Follow instructions in exercise 2

about the “TextEditor” window.

5. Click on the “GamePad” button

and choose ports A-B on the pop-up

window. Click to test the arrows and

answer exercises 3 and 4.

6. Use the GamePad and the Simulator to

record the sequence described in exercise 5.

Materials Needed:

- Engino Robotics PRO (STEM70).

- Computer with ERP software installed.

- Smart device with Android or iOs operating

system and the EnginoRobot BT app installed.

Exercise 4. How the model turns (refer to the wheels’ direction)?

Exercise 2. Use your mouse and keyboard in order to make

necessary changes on diﬀerent variables inside the TextEditor

(speed, duration, direction of motion and delay), so that the

forklift model executes its work more accurately. Circle the

changes you have made on the picture below.

Exercise 5. With the help of the GamePad and the Simulator

record the following sequence:

Ÿ the forklift robot moves forward and then turns to the right;

Ÿ the forklift robot moves forward until it ﬁnds the load;

Ÿ the teeth lift the load;

Ÿ the forklift robot turns to the left;

Ÿ the teeth lower the load.

..........................................................................................................

Exercise 3. Do the

wheels rotate in

the same direction

when each of the

4 arrows are

pressed? Write

YES or NO in the

boxes.

Exercise 1. On your smart device record the following

sequence:

Ÿ the forklift robot moves forward;

Ÿ the teeth lift the load;

Ÿ the forklift moves backwards;

Ÿ the teeth lower the load.

Tips: to move forward and backwards you should

tap on two motor buttons at the same time. Test

which is the correct direction for each one.

Engino forklift robot

Engino jeep car robot

There are many ways to control your Engino robots. One of

them is through the EnginoRobot application for smart devices

with a wireless Bluetooth connection. Try also the Engino

GamePad within the software and notice the diﬀerence between

manual button control and digital programming.

Decision making is what distinguishes a real robot from an

automated machine. This task is made possible by sensors which

receive feedback from the environment helping the robot to

decide what action to follow according to its program. Learn

about the touch sensor and the IF conditional statement below.

EnginoRobot app and GamePad

Learning about:

ROBOTICS

Functions, touch sensor, IF and IF/ELSE statements

ROBOTICS

Learning about:

How to control your robot wirelessly.

Why controlling your robot using digital

programming is usually better than manual

programming.

How to use functions.

How to use a touch sensor.

What an IF conditional statement is.

What an IF/ELSE conditional statement is.

Exercise 1. On the computer, place the correct icons on the

ERP simulator according to the jeep car robot model. Drag and

drop the necessary blocks inside the ﬂow diagram in order to

create the following program:

Ÿ the jeep moves forward for 3 seconds and the front LED lights

are both on at the same time.

Tip: use a “function” block to save the subprogram “move

forward”. Use the after/with previous command accordingly

and set the program to activate only once.

Exercise 2. Place an obstacle in front of the jeep car robot.

Make the necessary changes on the program of exercise

1 above so that:

Ÿ the jeep moves forward for 3 seconds and the front LED lights

are both on at the same time until it gets close to the obstacle;

Ÿ the jeep moves backwards for 1 second with all lights on;

Ÿ the jeep turns 90 degrees to the right with front LED lights on.

Tip: in order for the jeep to turn, you can either set the wheels

to turn in reverse or stop one wheel from moving altogether.

Also, conduct several tests to adjust the appropriate time

needed to turn.

Exercise 3. Drag and drop the IF statement block in the

ﬂow diagram. Right-click on it and write below which

variables can be modiﬁed (ignore “advanced” tab).

.......................................................................................................

Exercise 4. Use blocks inside the IF statement so that:

Ÿ the jeep moves forward continuously and the front LED lights

are both on at the same time;

Ÿ if the touch sensor is pushed, then the jeep should go

backwards for 1 second with all lights on and turn 90 degrees

to the right with front LED lights on.

Tip: place the blocks that you used in exercise 2 inside the If

statement and change the program so that it repeats forever.

Exercise 5. Drop the blocks inside the IF/ELSE statement so:

Ÿ the jeep moves forward continuously and the front LED lights

are both on at the same time;

Ÿ if the touch sensor is pushed, then it should go backwards for 1

second with all lights on and turn 90 degrees to the right with

front lights on. Else an interrupted beep should sound.

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ENGINO STEM70 - Sensors and Conditional Logic; Touch Sensor and IF;ELSE Statements

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