RBNV – Robot Builders Night Virtual – Mar 2, 2021

Meeting Video:

Chat Record:  Chat record (PDF)
When

• March 2nd, starting at 7:30 PM Dallas time (CST).
• RBNV will continue each Tuesday evening until the virus crisis is over.

How

• Join Hangouts Meet https://meet.google.com/hey-jxuo-esf
• Or join by phone ‪+1 405-586-5598‬ ‬ PIN: ‪682 931 335 #‬

Why

• Talk robots & related stuff.
• Keep going while we’re stuck at home.
• Make it easier for people to attend DPRG remotely.

Agenda:

• Round table – everybody spends a couple minutes telling what projects they’re working on as we’re all stuck at home
• Ad-hoc presentations – Whoever would like to show & tell.
• “Stump the club” Challenges – Ask for help if you’ve hit a roadblock in your project. Somebody in the club can probably get you pointed in a good direction – or even arrange a side bar session to help.

Note: We record a video of these sessions and post them on the DPRG YouTube channel. By joining the meeting, you’re giving consent to be included in the recording.

RBNV – Robot Builders Night Virtual – Feb 16, 2021

Meeting Video:

Chat Record:  Chat record (PDF)

When

•February 16th, starting at 7:30 PM Dallas time (CST).
• RBNV will continue each Tuesday evening until the virus crisis is over.

How

• Join Hangouts Meet https://meet.google.com/hey-jxuo-esf
• Or join by phone ‪+1 405-586-5598‬ ‬ PIN: ‪682 931 335 #‬

Why

• Talk robots & related stuff.
• Keep going while we’re stuck at home.
• Make it easier for people to attend DPRG remotely.

Agenda:

• Round table – everybody spends a couple minutes telling what projects they’re working on as we’re all stuck at home
• Ad-hoc presentations – Whoever would like to show & tell.
• “Stump the club” Challenges – Ask for help if you’ve hit a roadblock in your project. Somebody in the club can probably get you pointed in a good direction – or even arrange a side bar session to help.

Note: We record a video of these sessions and post them on the DPRG YouTube channel. By joining the meeting, you’re giving consent to be included in the recording.

Outdoor Rover Expert Builder Panel – DPRG Virtual Monthly Meeting, Feb 13th, 2021

Meeting Video:

Chat Record:  Chat record (PDF)
Moderator’s slide deck:  Slide Deck (PDF)

This meeting kicks off DPRG’s 2021 focus on Outdoor Rovers.

DPRG has tentatively scheduled its 1st post Covid-19 Outdoor Competition for the 2nd Saturday of August 2021. To give everyone a quick start, the club has assembled a panel of very successful outdoor rover builders to discuss how to construct an outdoor rover. This is your chance to ask expert rover builders questions during an online interactive meeting.

In coming months DPRG will have additional presentations focused on rover related topics, and we’ll encourage builders to build.

Panel members are:

David Anderson, DPRG member and builder of Jbot, winner of RoboColumbus in 2014, 2015, 2016.

Scott Gibson, DPRG member and builder of B.U.R.P., winner of RoboColumbus in 2017.

Karim Virani, DPRG member and builder of RTK GPS rover BeachComber and rock-crawler rover Argos.

Jesse Brockmann,  Sparkfun Ambassador and builder of Jrover, winner of the 2016 (heavy) and 2017 (overall) Sparkfun AVC.

Agenda:

  • Each panelist will give a short intro / overview of their rover(s).
  • Moderator led questions. Submit questions that you want the panel to answer to Carl Ott, president(at)dprg.org.
  • Open Q&A

When:

  • Saturday, February 13th.
  • Starting at 1:00 PM Dallas time (CST).

How:

About DPRG Monthly Meetings

DPRG hosts presentations each month during its regular membership meeting. These meetings and presentations are open to public and free to attend. We hope to see you there. Everyone is welcome to attend.

Note: We do record a video of these sessions and post them on the DPRG YouTube channel (https://www.youtube.com/user/DPRGclips). By joining the meeting you’re giving consent to be included in the recording.

RBNV – Robot Builders Night Virtual – Feb 9, 2021

Meeting Video:

Chat Record:  Chat record (PDF)

When

•February 9th, starting at 7:30 PM Dallas time (CST).
• RBNV will continue each Tuesday evening until the virus crisis is over.

How

• Join Hangouts Meet https://meet.google.com/hey-jxuo-esf
• Or join by phone ‪+1 405-586-5598‬ ‬ PIN: ‪682 931 335 #‬

Why

• Talk robots & related stuff.
• Keep going while we’re stuck at home.
• Make it easier for people to attend DPRG remotely.

Agenda:

• Round table – everybody spends a couple minutes telling what projects they’re working on as we’re all stuck at home
• Ad-hoc presentations – Whoever would like to show & tell.
• “Stump the club” Challenges – Ask for help if you’ve hit a roadblock in your project. Somebody in the club can probably get you pointed in a good direction – or even arrange a side bar session to help.

Note: We record a video of these sessions and post them on the DPRG YouTube channel. By joining the meeting, you’re giving consent to be included in the recording.

RBNV – Robot Builders Night Virtual – Feb 2, 2021

Meeting Video:

Chat Record:  Chat record (PDF)

When

•February 2nd, starting at 7:30 PM Dallas time (CST).
• RBNV will continue each Tuesday evening until the virus crisis is over.

How

• Join Hangouts Meet https://meet.google.com/hey-jxuo-esf
• Or join by phone ‪+1 405-586-5598‬ ‬ PIN: ‪682 931 335 #‬

Why

• Talk robots & related stuff.
• Keep going while we’re stuck at home.
• Make it easier for people to attend DPRG remotely.

Agenda:

• Round table – everybody spends a couple minutes telling what projects they’re working on as we’re all stuck at home
• Ad-hoc presentations – Whoever would like to show & tell.
• “Stump the club” Challenges – Ask for help if you’ve hit a roadblock in your project. Somebody in the club can probably get you pointed in a good direction – or even arrange a side bar session to help.

Note: We record a video of these sessions and post them on the DPRG YouTube channel. By joining the meeting, you’re giving consent to be included in the recording.

RBNV – Robot Builders Night Virtual – Jan 26, 2021

Meeting Video:

Chat Record:  Chat record (PDF)
When

•January 26th, starting at 7:30 PM Dallas time (CST).
• RBNV will continue each Tuesday evening until the virus crisis is over.

Meeting Highlight

The FTC robotics team, Iron Reign, presented their process to design and implement a ring shooter. It covered a description of the problem, the mathematical model, the CAD design, and physical assembly. The ring shooter’s first launch was made during the meeting.

How

• Join Hangouts Meet https://meet.google.com/hey-jxuo-esf
• Or join by phone ‪+1 405-586-5598‬ ‬ PIN: ‪682 931 335 #‬

Why

• Talk robots & related stuff.
• Keep going while we’re stuck at home.
• Make it easier for people to attend DPRG remotely.

Agenda:

• Round table – everybody spends a couple minutes telling what projects they’re working on as we’re all stuck at home
• Ad-hoc presentations – Whoever would like to show & tell.
• “Stump the club” Challenges – Ask for help if you’ve hit a roadblock in your project. Somebody in the club can probably get you pointed in a good direction – or even arrange a side bar session to help.

Note: We record a video of these sessions and post them on the DPRG YouTube channel. By joining the meeting, you’re giving consent to be included in the recording.

RBNV – Robot Builders Night Virtual – Jan 19, 2021

Meeting Video:

Chat Record:  Chat record (PDF)
When

•January 19th, starting at 7:30 PM Dallas time (CST).
• RBNV will continue each Tuesday evening until the virus crisis is over.

How

• Join Hangouts Meet https://meet.google.com/hey-jxuo-esf
• Or join by phone ‪+1 405-586-5598‬ ‬ PIN: ‪682 931 335 #‬

Why

• Talk robots & related stuff.
• Keep going while we’re stuck at home.
• Make it easier for people to attend DPRG remotely.

Agenda:

• Round table – everybody spends a couple minutes telling what projects they’re working on as we’re all stuck at home
• Ad-hoc presentations – Whoever would like to show & tell.
• “Stump the club” Challenges – Ask for help if you’ve hit a roadblock in your project. Somebody in the club can probably get you pointed in a good direction – or even arrange a side bar session to help.

Note: We record a video of these sessions and post them on the DPRG YouTube channel. By joining the meeting, you’re giving consent to be included in the recording.

RBNV – Robot Builders Night Virtual – Jan 12, 2021

Meeting Video:

Chat Record:  Chat record (PDF)

When

•January 12th, starting at 7:30 PM Dallas time (CST).
• RBNV will continue each Tuesday evening until the virus crisis is over.

How

• Join Hangouts Meet https://meet.google.com/hey-jxuo-esf
• Or join by phone ‪+1 405-586-5598‬ ‬ PIN: ‪682 931 335 #‬

Why

• Talk robots & related stuff.
• Keep going while we’re stuck at home.
• Make it easier for people to attend DPRG remotely.

Agenda:

• Round table – everybody spends a couple minutes telling what projects they’re working on as we’re all stuck at home
• Ad-hoc presentations – Whoever would like to show & tell.
• “Stump the club” Challenges – Ask for help if you’ve hit a roadblock in your project. Somebody in the club can probably get you pointed in a good direction – or even arrange a side bar session to help.

Note: We record a video of these sessions and post them on the DPRG YouTube channel. By joining the meeting, you’re giving consent to be included in the recording.

L298N Motor Driver Board – Drive Modes

Author: Doug Paradis

This article discusses how to connect the L298 motor driver in three modes: drive/coast, sign-magnitude, and lock anti-phase. Code examples will be for the Arduino Uno (or with small modifications the Mega2560).

The L298N is a dual H-bridge chip often packaged nicely on a PCB module. It is widely used on small inexpensive hobbyist robots. It has a maximum current specification of 2.0 A per channel with a peak current of 3.0 A per channel (from STI spec sheet). Each H-bridge can control one DC brushed motor.Continue reading