Reference Resources PDF Print E-mail
Written by The Cougars   
Sunday, 28 September 2014 05:25

HiTechnic & Matrix Controllers

FTC Motors

Build A Better Bot Workshops

Shop References
(courtesy of Bernez's Knifemaking Info Pages)

 

Attachments:
Download this file (AndyMark am-2964 NeveRest40.PDF)AndyMark am-2964 NeveRest40.PDF[ ]93 Kb01/10/14 08:02
Download this file (FTC Workshop - content - final.pptx)Build A Better Bot workshop[ ]9895 Kb25/10/14 18:43
Download this file (HiTechnic-Motor-Controller-Specification-v1.4.pdf)HiTechnic Motor Controller brief v1.4[ ]155 Kb10/10/14 13:16
Download this file (hitechnic_motor_controller_-_brief_v1.3.pdf)HiTechnic Motor Controller brief v1.3[ ]194 Kb10/10/14 13:16
Download this file (hitechnic_servo_controller_-_brief_v1.2.pdf)HiTechnic Servo Controller brief[ ]168 Kb01/10/14 07:18
Download this file (MATRIX-Controller-Specification-v1.2.pdf)MATRIX Motor Controller Specification[ ]165 Kb09/10/14 09:18
Download this file (MATRIX_HTMotor_Spec_v2.pdf)MATRIX HT-Motor[ ]250 Kb02/10/14 08:53
Download this file (MATRIX_Motor_Spec_v2.pdf)MATRIX Motor[ ]245 Kb02/10/14 08:52
Download this file (tap_and_drill_chart_-_english.pdf)Tap & Drill Chart - English sizes[ ]115 Kb01/10/14 08:14
Download this file (Tetrix_DC_Motor_V1.pdf)Tetrix DC Motor[ ]122 Kb01/10/14 08:01
Download this file (Tetrix_DC_Motor_V2.pdf)Tetrix DC Motor V2[ ]1983 Kb01/10/14 08:02
Last Updated on Thursday, 30 October 2014 13:53
 
Servo Stall Currents PDF Print E-mail
Written by Evan Hollins   
Tuesday, 30 September 2014 17:23

A big rule change this year added the ability to use as big of a servo as possible while still staying under 5 amps per servo controller at stall. Unfortunately, many of the servos we commonly use didn't have documented stall currents. To find these, we contacted ServoCity™ and asked them what to do. They were able to talk to HiTec© and retrieve stall currents for many of the servos that they make. Here they are in a table shown below. 

We would like to thank ServoCity and HiTec for helping not just us but all of FTC! 

For Analog Servos:

SERVO

 

STALL CURRENT @ 4.8V

STALL CURRENT @ 6V

    

HS-35

 

360mA

430mA

HS-40

 

460mA

580mA

HS-45

 

440mA

 

HS-53

 

440mA

550mA

HS-55

 

440mA

550mA

HS-65

 

960mA

1200mA

HS-70

 

960mA

1250mA

HS-81/82

 

1450mA

1800mA

HS-311

 

700mA

800mA

HS-322

 

700mA

800mA

HS-485

 

1000mA

1200mA

HS-625

 

1600mA

2000mA

HS-645

 

1600mA

2000mA

HS-755

 

1500mA

1800mA

HS-765

 

1500mA

1800mA

HS-785

 

1500mA

1800mA

HS-805

 

4800mA

6000mA

HS-1425CR

 

640mA

800mA

 

 For Digital Servos: 

SERVO

 

STALL CURRENT @ 4.8V

STALL CURRENT @ 6V

HS-5035

 

360mA

430mA

HS-5055

 

500mA

700mA

HS-5065

 

960mA

1200mA

HS-5070

 

1000mA

1300mA

HS-5085

 

1700mA

2150mA

HS-5087

  

1450mA

HS-5485

 

1000mA

1200mA

HS-5495/96

 

1200mA

1400mA

HS-5565

  

2100mA

HS-5585

  

2100mA

HS-5625/45

  

2100mA

HS-5665/85

  

2100mA

HS-7235/45

  

1300mA

Attachments:
Download this file (2013_HRU_ServoMat_2.pdf)HiTec Servo Product Table[ ]3531 Kb01/10/14 07:22
Last Updated on Tuesday, 30 September 2014 21:29
 
World Championship Update PDF Print E-mail
Written by Joey   
Tuesday, 22 April 2014 22:17

We have just arrived in St. Louis, pulling up right in front of the NASA trailer! Wednesday is load in and judging, and Thursday, Friday, and Saturday are matches. Looking forward to seeing all of our friends from around the world and playing robots! We are in the Edison Division (will probably be listed as division 2 on the live stream page).

Live streams to all of the FTC events will be posted here.

 http://www3.usfirst.org/roboticsprograms/ftc/ftclive

Good luck to everyone competing this week! 

 

Last Updated on Friday, 10 October 2014 16:50
 
Build a Better Bot Workshop with Patronum Bots PDF Print E-mail
Written by The Cougars   
Wednesday, 18 September 2013 08:33

On August 31st we got together with the Patronum Bots at their home base in East Troy, Wisconsin to put on our Build a Better Bot workshop. It was an all day event, and 12 teams attended, coming from Wisconsin and surrounding states. Throughout the day, we discussed topics such as game and robot analysis, mechanical and wiring practices, and static electricity. Along with topics about the robot, we also went over scouting and showed teams how we pick teams at tournaments. Near the end of the day, we held an “open work time” with several stations of hands-on activities. These included double drilling channel, creating static spray, switching from tamiya connections to anderson powerpoles, and making static detectors.

Check out the videos in the Build a Better Bot workshop playlist created by the Patronum Bots. 

 

 

Attachments:
Download this file (FTC Workshop Wisconsin.pptx)FTC Workshop Wisconsin.pptx[The slide deck from our Build a Better Bot workshop, August 31 2013, in East Troy WI]96876 Kb13/09/13 08:38
Last Updated on Monday, 07 October 2013 07:48
 
Build a Better Bot workshop handouts & useful info PDF Print E-mail
Written by Jamie Diamond   
Monday, 16 September 2013 22:31

Attachments:
Download this file (HiTechnic Motor Controller Brief v1.3.pdf)HiTechnic Motor Controller Brief v1.3.pdf[ ]194 Kb16/09/13 22:36
Download this file (HiTechnic Servo Controller Brief v1.2.pdf)HiTechnic Servo Controller Brief v1.2.pdf[ ]168 Kb16/09/13 22:36
Download this file (HiTechnic Servo Controller Power Limits.pdf)HiTechnic Servo Controller Power Limits.pdf[ ]115 Kb16/09/13 22:36
Download this file (HS-485HB Servo - A.pdf)HS-485HB Servo - A.pdf[ ]182 Kb16/09/13 22:37
Download this file (HS-485HB Servo - B.pdf)HS-485HB Servo - B.pdf[ ]829 Kb16/09/13 22:41
Download this file (Motor Power Chart.pdf)Motor Power Chart.pdf[ ]29 Kb16/09/13 22:37
Download this file (TETRIX DC Motor Specs.pdf)TETRIX DC Motor Specs.pdf[ ]122 Kb16/09/13 22:37
Last Updated on Monday, 16 September 2013 22:41
 
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FTC Blog

FIRST Tech Challenge
The official FTC Blog
  • FIRST Tech Challenge Tech Talk: Rev Robotics Expansion Hub FAQ
    Read our new technology evolution announcement here!

    Q: Why the change?
    A: There are several reasons for the change to the REV Robotics Expansion Hub. The new configuration will be easier for teams to use. Placement of the single REV Robotics Expansion Hub takes up less “real estate” and will give teams more options in how they build their robots. Wiring will be more straight forward with fewer connections. Also, REV Robotics Expansion Hub connectors use compact hobby-style connectors that are commonly used in the RC/hobby industry. These connectors offer greater resilience to shock and vibration. The cost of a single, integrated electronics hub is less expensive than several discrete devices. These benefits follow the similar evolution of most electronics (smaller, faster, cheaper).  

    Q: How does this effect programming? 
    A: This year, teams programmed in JAVA via Android Studio, App Inventor, or Blocks. 
    Next year, the same languages will be allowed and teams should see little difference in their programming experience with the REV Robotics Expansion Hub. One small change will be the ease of addressing motors, sensors and servos since programmers will directly assign these values through the REV Robotics Expansion Hub and avoid the step of choosing a particular Modern Robotics device, and then assigning the values. 

    Q: Can I continue to use Modern Robotics modules? 
    A: Yes. Teams using Modern Robotics modules can continue to use these devices. They can expect the same performance they have been used to, and the new REV Robotics Expansion Hubs will have similar output characteristics to the Modern Robotics modules. For example, DC motor current rating is the same between the two controllers.  

    Q: Can I replace my Modern Robotics devices with the REV Robotics Expansion Hub via the FIRST®storefront? 
    A: Yes. Veteran teams will be allowed to purchase a maximum of one REV Robotics Expansion Hub via the FIRST® storefront at a team discount price upon registration next season. 

    Q: Can my existing servos and motors/encoders be used with the new REV Robotics Expansion Hub? 
    A: Yes, teams can use their existing servos and motors/encoders with the new Expansion Hub. Existing servos can be plugged right in to the Expansion Hub. The 12V power cables of existing approved motors will need an adapter cable to connect these motors to the Expansion Hub. For the existing approved motor encoders, a special adapter cable with a logic level converter will need to be used to connect these encoders to the Expansion Hub.  Teams will be able to purchase the cables and adapters through the FIRST storefront.


    Q: Can my existing sensors be used with the new REV Robotics Expansion Hub? 
    A: For teams using existing Modern Robotics I2C sensors, because the Expansion Hub uses a 3.3V logic-level while the Modern Robotics sensors use a 5V logic-level. A team will need to use a special adapter cable with a logic-level converter included that will allow their 5V Modern Robotics I2C sensors to be used with the new Expansion Hub. Teams will be able to purchase the cables and adapters through the FIRST storefront. 

    For the other Modern Robotics sensors (touch sensor and optical distance sensor) the REV Robotics Expansion Hub kit will include 3.3V alternative sensors that work directly with the Expansion Hub.

    Teams also have the option of using their existing Modern Robotics Core Device Interface modules in parallel to an Expansion Hub to connect their existing 5V sensors to their Robot Controller.

    Q: Can legacy NXT-style sensors be used directly with the new REV Robotics Expansion Hub? 
    A: No, the new REV Robotics Expansion Hub does not have provisions to use the older style NXT sensors. 

    Q: What sensors are included with the new REV Robotics Expansion Hub and will they be allowed for use in the FIRST®Tech Challenge?  
    A: The new REV Robotics Expansion Hub will include a color-range sensor and a touch sensor.  Also, there is a built in inertial measurement unit (Bosch BNO055 9 axis absolute orientation sensor) built into each Expansion Hub.  Teams can use the color-range sensor as an optical distance sensor and as a color sensor.  Teams can use the touch sensor as a limit switch and touch sensor.  Teams can use the onboard IMU for inertial navigation. These sensors will be allowed for use in the FIRST® Tech Challenge.

    Learn more about our new Rev Expansion hub here!