Meeting Video:
Chat Record: Chat record (PDF)
Star Rewards (★ = significant robot progress, ⭐ = robot progress and running on floor):
Stars are awarded by group during the meeting.
No stars rewarded this week
When
• November 1, starting at 7:30 PM Dallas time (CDT).
• Robot Builders Night Virtual (RBNV) meets each Tuesday evening.
Meeting Video:
Chat Record: Chat record (PDF)
Star Rewards (★ = significant robot progress, ⭐ = robot progress and running on floor):
Stars are awarded by group during the meeting.
No stars rewarded this week
When
• October 25, starting at 7:30 PM Dallas time (CDT).
• Robot Builders Night Virtual (RBNV) meets each Tuesday evening.
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.
• Make it easier for people to attend DPRG remotely.
Agenda
• Round table – everybody spends a couple minutes telling what projects they’re working on.
• 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.
Meeting Video:
Chat Record: Chat record (PDF)
Star Rewards (★ = significant robot progress, ⭐ = robot progress and running on floor):
Stars are awarded by group during the meeting.
Michael Ivison – ⭐
John Gauthier – ⭐
Doug Paradis – ⭐
When
• October 18, starting at 7:30 PM Dallas time (CDT).
• Robot Builders Night Virtual (RBNV) meets each Tuesday evening.
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.
• Make it easier for people to attend DPRG remotely.
Agenda
• Round table – everybody spends a couple minutes telling what projects they’re working on.
• 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.
Meeting Video:
Chat Record: Chat record (PDF)
Star Rewards (★ = significant robot progress, ⭐ = robot progress and running on floor):
Stars are awarded by group during the meeting.
Michael Ivison – ⭐
Harold Pulcher – ⭐
When
• October 11, starting at 7:30 PM Dallas time (CDT).
• Robot Builders Night Virtual (RBNV) meets each Tuesday evening.
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.
• Make it easier for people to attend DPRG remotely.
Agenda
• Round table – everybody spends a couple minutes telling what projects they’re working on.
• 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.
Meeting Video:
Chat Record: Chat record (PDF)
Star Rewards (★ = significant robot progress, ⭐ = robot progress and running on floor):
Stars are awarded by group during the meeting.
Scott Gibson – ★
When
• October 4, starting at 7:30 PM Dallas time (CDT).
• Robot Builders Night Virtual (RBNV) meets each Tuesday evening.
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.
• Make it easier for people to attend DPRG remotely.
Agenda
• Round table – everybody spends a couple minutes telling what projects they’re working on.
• 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.
Meeting Video:
Chat Record: Chat record (PDF)
Star Rewards (★ = significant robot progress, ⭐ = robot progress and running on floor):
Stars are awarded by group during the meeting.
No stars rewarded this week
When
• September 27, starting at 7:30 PM Dallas time (CDT).
• Robot Builders Night Virtual (RBNV) meets each Tuesday evening.
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.
• Make it easier for people to attend DPRG remotely.
Agenda
• Round table – everybody spends a couple minutes telling what projects they’re working on.
• 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.
Meeting Video:
Chat Record: Chat record (PDF)
Star Rewards (★ = significant robot progress, ⭐ = robot progress and running on floor):
Stars are awarded by group during the meeting.
Ray Casler – ⭐
Michael Ivison – ⭐
Doug Paradis – ★
When
• September 20, starting at 7:30 PM Dallas time (CDT).
• Robot Builders Night Virtual (RBNV) meets each Tuesday evening.
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.
• Make it easier for people to attend DPRG remotely.
Agenda
• Round table – everybody spends a couple minutes telling what projects they’re working on.
• 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.
Meeting Video:
Chat Record: Chat record (PDF)
Star Rewards (★ = significant robot progress, ⭐ = robot progress and running on floor):
Stars are awarded by group during the meeting.
Bob Gross – ★
When
• September 13, starting at 7:30 PM Dallas time (CDT).
• Robot Builders Night Virtual (RBNV) meets each Tuesday evening.
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.
• Make it easier for people to attend DPRG remotely.
Agenda
• Round table – everybody spends a couple minutes telling what projects they’re working on.
• 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.
Meeting Video:
Chat Record: Chat record (PDF)
Star Rewards (★ = significant robot progress, ⭐ = robot progress and running on floor):
Stars are awarded by group during the meeting.
Ray Casler – ★
When
• September 6, starting at 7:30 PM Dallas time (CDT).
• Robot Builders Night Virtual (RBNV) meets each Tuesday evening.
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.
• Make it easier for people to attend DPRG remotely.
Agenda
• Round table – everybody spends a couple minutes telling what projects they’re working on.
• 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.
Author: John Gauthier
The Problem:
One vulnerability of the Raspberry Pi is its susceptibility to micro-SD card corruption. Power interruption during a SD card write is the main culprit. Such interruptions can corrupt the file or even make the entire micro-SD card unusable. The problem is worst in designs where the Raspberry Pi runs headless, leaving no convenient way to request a graceful shutdown.
The Solution:
The solution consists of four parts: a Python script, a service, a shell script and a switch. The code and installation instructions are at https://github.com/zizumara/GPIOshutdown.
How it works:
The GPIOshutdown Python script, when run as a service, provides a way to initiate a graceful shutdown of the operating system by grounding one of its GPIO pins through a switch. The script monitors pin #26 by default. The value of SHUTDOWN_PIN in GPIOshutdown.py controls the monitored pin. When launched, the script will wait for a fixed period before beginning to monitor the GPIO pin. This is a failsafe to allow the user to login via SSH and stop the service to prevent continuous rebooting if the GPIO pin is damaged or otherwise accidentally shorted. The delay defaults to 180 seconds but is modifiable by editing the value of ARMING_DELAY in GPIOshutdown.py. Marking the switch to indicate which position initiates shutdown is highly recommended. In this application, shutdown occurs when the switch is closed.
