Activity #19: Assemble Collision Detection Circuit

Can we assemble the Collision Detection circuit onto the PCB? 

In this activity we install and solder the circuit components that provide Collision Detection capabilities for the robot.  The Collision Detection circuit assists in detecting objects with switches on the front of the robot.

How does this differ from building the prototype of the Collision Detection circuit?

We now know about the Collision Detection process and the parts that make up the Collision Detection circuit. We have reviewed how the switches function and how they designers specified a different resistor value for each switch.  We have read the schematic diagram, created a prototype of the circuit, and tested the operation of each component.  Now we will solder the switches, resistors, and capacitors that are part of this circuit onto the PCB. 

We take care and use caution while soldering, and carefully identify and prepare each part prior to soldering it to the PCB.

By the end of this activity you will be able to:

1. Demonstrate safe use of soldering when attaching items to a PCB board.
2. Assemble and identify Collision Detection circuit components
3. Solder Collision Detection circuit components to PCB board
4. Demonstrate knowledge of soldering and de-soldering techniques
5. Demonstrate ability to read and understand a circuit diagram
6. Demonstrate functional knowledge of resistors, switches, and capacitors
7. Use a digital multimeter to verify operation of the circuit
8. Test operation of collision detection circuit, record and compare results of tests to prototype
9. Apply troubleshooting techniques to resolve any issues with the collision detection circuit
10. Calculate the resistance values for the circuit with various switch settings.

Complete these steps.

1. Open Activity 19 Worksheet and review.
2. Read Chapter 19 Assemble Collision Detection Circuit in book.
3. Review the other resources linked below.
4. View activity video: Assemble Collision Detection Circuit
5. Complete activities in the worksheet
6. Complete Assessments

Links to additional materials:

• ARX ASURO Manual
• 3D Model of PCB with Collision Detection Circuit
• Switch
• Resistor
• Capacitor
• Resistors in series
• Resistors in parallel
• Resistors in series-parallel
• Voltage divider circuit
• Interrupts
• Analog to Digital Converter
• Ohms Law
• Kirchhoff’s Law

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