Posts Tagged ‘4n25’

How Do I Handshake Between Two VEX Cortexes?

Question:

I have two machines connected to 2 VEX Cortexes and I want to make them talk to one another using inputs and outputs. How do I do this?

Answer:

This is called handshaking, and you will need two computers running RobotC Software, and 2 VEX cortex’s  to do this.
Below is a worksheet that you can download with all of the basics, and there will be a video below shortly as well.
reddownloadVEX 2 VEX Handshaking
vexvex1 vexvex2             Continue Reading

How do I Handshake Between a VEX Cortex and a Lynxmotion Robot Arm?

Question:

I have a lynxmotion robot, and I want to make it talk to a machine connected to a VEX Cortex using inputs and outputs. How do I do this?

Answer:

This is called handshaking, and you will need at least one computer, Flowarm and RobotC Software, a Lynx arm with SSC32 controller, and a VEX cortex  to do this.
Below is a worksheet that you can download with all of the basics, and there will be a video below shortly as well.
reddownload VEX 2 Lynx Handshaking
      lynxvex1 lynxvex2 lynxvex3 Continue Reading

How do I Handshake Lynx Robot to Lynx Robot

Question:

I have two lynxmotion robots, and I want to make them talk to one another via inputs and outputs. How do I do this?

Answer:

You will need two robot arms using SSC32U controllers, a few 4N25 optical isolators a few resistors, FlowArm software and some wires and a breadboard and you are ready to go!
Below is a worksheet that you can download with all of the basics, and there will be a video below shortly as well.
reddownload SSC32U to SSC32U Handshaking
lynxlynx1 lynxlynx2 Continue Reading

Project Idea: Dual Lynx To Vex Handshaking Modules

Sorry it took so long, but here is some info on how to make the Dual Handshake Module Jim & I designed two years ago. All files are attached in a zip file at the link below. These files include:
  • All inventor part files: tweak to your heart’s content
  • STL and Makerbot files
  • DXF files for the cover.
  • Various pictures to help with assembly
  • Materials list
  • PDF of this Project
reddownloadHandshake Module Container

1Intro

2NotesHSM

Parts List v2
Items above in red are not needed. These were from version 1. This brings the cost down, but requires you to use less costly servo extension wires for the cables.

Soldering Diagram (Better one coming soon!)

solder diagram 2

 

Procedure:

  1. Solder 4N25 IC’s in place. Use caution and work quickly as they are heat sensitive.
  2. Solder LED’s and Headers in place (or wires, your choice!)
  3. Knock the corners of the board off so it fits into the container.
  4. Snap the board into the container.
  5. Place the spacers on top of the board.
  6. Place the cover on carefully.
  7. Put the 4-40 screws through.
  8. Put the nuts on the back, tighten carefully.

Tips and Tricks:

Paint the cover BLACK before you peel it, and the black dots will indicate where the black wires go!  The arrows indicate the direction of the communication: Tail of the arrow = the signal “Sender”, head of the arrow = signal “Receiver”  Cover
 Container back  Container front
Container back prints with space for 4-40 nuts. Container front prints so that the board will snap into the built in standoffs. IN ORDER TO FIT, YOU HAVE TO KNOCK THE CORNERS OFF THE BREADBOARD. I used a belt sander.  
To assemble the parts, see below. Be sure to use the printed spacers to stop the board from wiggling around!  
 HSM exploded view
  Continue Reading

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Jim Hanson

Chris Hurd

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