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by gkaiseril
Sun Sep 15, 2019 9:26 pm
Forum: Beginners
Topic: Updating time on my rpi 3b
Replies: 3
Views: 84

Re: Updating time on my rpi 3b

If you do not want to use the ntp service, it is possible to use the following command line script to set the date and time:

Code: Select all

sudo date -s "$(wget -qSO- --max-redirect=0 google.com 2>&1 | grep Date: | cut -d' ' -f5-8)Z"
by gkaiseril
Wed Sep 11, 2019 5:32 pm
Forum: Troubleshooting
Topic: Toolbar disappeared
Replies: 4
Views: 100

Re: Toolbar disappeared

Remove the lxPanel directories and then restart the Pi.

If the lxPanel directories are missing, the boot process will reestablish the default panel.

Raspberry Pi: Raspbian Missing Menu Bar
by gkaiseril
Wed Sep 11, 2019 3:51 pm
Forum: Beginners
Topic: Format a pre-rigged NOOBS card
Replies: 3
Views: 79

Re: Format a pre-rigged NOOBS card

One can also use a digital camera that uses the micro sd card to reformat the micro sd card.
by gkaiseril
Mon Sep 09, 2019 11:54 pm
Forum: Advanced users
Topic: Boolean logic in config.txt conditional filters
Replies: 3
Views: 134

Re: Boolean logic in config.txt conditional filters

The last section shows how to combine conditional filters. Filters of different types can be combined simply by listing them one after the other, for example: # settings here are applied to all hardware [EDID=VSC-TD2220] # settings here are applied only if monitor VSC-TD2220 is connected [pi2] # set...
by gkaiseril
Sun Sep 08, 2019 4:09 pm
Forum: Troubleshooting
Topic: FTP images to pi gets corrupted.
Replies: 1
Views: 49

Re: FTP images to pi gets corrupted.

Are you transferring using ascii or binary modes?

FTP Binary and ASCII Transfer Types And The Case of Corrupt Files

Another approach would be to use SSH and scp.
by gkaiseril
Sat Sep 07, 2019 8:33 pm
Forum: General discussion
Topic: How to make money with a Raspberry Pi?
Replies: 40
Views: 1672

Re: How to make money with a Raspberry Pi?

Tutor others in how to use RPi.
by gkaiseril
Thu Aug 29, 2019 8:55 pm
Forum: General discussion
Topic: cables and casing
Replies: 5
Views: 284

Re: cables and casing

There are times when one needs to start the Pi with minimum drivers so there is no wifi or bluetooth. Under these conditions a wired keyboard and mouse are necessary. The most common need is for resetting a user password when all passwords are not known.
by gkaiseril
Thu Aug 29, 2019 8:41 pm
Forum: Troubleshooting
Topic: date and time
Replies: 4
Views: 214

Re: date and time

Unlike a Windows PC or Mac, the Raspberry Pi does not have a real hardware clock. The Raspbian OS records the date and time when shut down and uses this value if there is no hardware clock or internet connection. If there is an enabled hardware clock, the OS will query the hardware clock and set the...
by gkaiseril
Sun Aug 25, 2019 2:28 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: GPIO UART voltages
Replies: 9
Views: 342

Re: GPIO UART voltages

From ADA Fruit the 5 vdc power connection is optional. It is important that only one side of the serial connection power the serial connection. Since you cannot control the power to the USB plug, assume it is providing the power and do not connect the 5 vdc connection. Only if the connection does no...
by gkaiseril
Sat Aug 17, 2019 5:14 pm
Forum: Beginners
Topic: Powering up/down a Pi
Replies: 13
Views: 1024

Re: Powering up/down a Pi

To power on or off mains power, one can use a power strip or single inline power switch. Just look for them in a local hardware store or online.
by gkaiseril
Sat Aug 17, 2019 4:20 pm
Forum: General discussion
Topic: Mounting The Pi PCB
Replies: 7
Views: 733

Re: Mounting The Pi PCB

After mounting Pi circuit board into the case, then one can insert any cords or SD cards as needed.
by gkaiseril
Sat Aug 17, 2019 4:08 pm
Forum: General discussion
Topic: Mounting The Pi PCB
Replies: 7
Views: 733

Re: Mounting The Pi PCB

In general do not have anything plugged into the Pi's circuit board. No SD card, no GPIO cable, no power cord, no earphone, no power plug, no USB cord, to network cable, now display, no camera, etc. Note that each Pi board could have a unique case, so make sure your case is designed to fit your Pi. ...
by gkaiseril
Wed Aug 14, 2019 3:33 pm
Forum: Troubleshooting
Topic: Startup script from rc.local is not being executed
Replies: 5
Views: 319

Re: Startup script from rc.local is not being executed

Are you booting into the command line?

Can you post your rc.local contents.

Since no user is logged in at the time of the running of the r.local, you need to specify all absolute paths.
by gkaiseril
Tue Aug 13, 2019 10:07 pm
Forum: Android
Topic: how do I install android on Raspberry Pi 3 B+?
Replies: 7
Views: 3220

Re: install android on Raspberry Pi 3 B+

About 1 year ago MagPi ran an article about doing just that.

RUNNING ANDROID ON A RASPBERRY PI

Google will provide more information.
by gkaiseril
Tue Aug 13, 2019 12:24 am
Forum: Troubleshooting
Topic: RPi 2 has better connectivity than RPi4?
Replies: 15
Views: 1112

Re: RPi 2 has better connectivity than RPi4?

Lets start with does your access point and other network equipment. Does your equipment support the 1Gigabit connectivity that the Pi 4 does. Your connection will only be as good as the slowest piece of equipment in the communication line. Are there other networks in your area that appear with a mor...
by gkaiseril
Sat Aug 10, 2019 9:00 pm
Forum: Beginners
Topic: Long term cons of using bent pin headers? (instead of soldering)
Replies: 8
Views: 359

Re: Long term cons of using bent pin headers? (instead of soldering)

The contact could work lose or corrode by oxidation. Solder seals off the contact surface and makes a better electric contact. Solder is not the strongest bond, so there should be some mechanical bonding. One can tin the wire and pins before applying the final heat to add some solder or just melt th...
by gkaiseril
Thu Aug 01, 2019 1:47 pm
Forum: General discussion
Topic: how to merge apps
Replies: 5
Views: 263

Re: how to merge apps

Get several monitors, one for each app. With the Pi 4 you can have 2 apps running and no bars. If you need more just buy more Pis and use VNC to access each system.
by gkaiseril
Sun Jul 28, 2019 10:55 pm
Forum: Troubleshooting
Topic: Thonny no longer on my RPi
Replies: 2
Views: 99

Re: Thonny no longer on my RPi

You might also want to install python3-thonny-pi.
by gkaiseril
Fri Jul 26, 2019 3:57 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3 B+ - Yellow lightning bolt appearing on screen after 8 months of use
Replies: 4
Views: 164

Re: Raspberry Pi 3 B+ - Yellow lightning bolt appearing on screen after 8 months of use

That sounds like a buildup of oxidation that is acting like a resistor in the circuit. There are chemicals that can remove the built up or as you have found out the friction of plugging and unplugging the connectors will wipe the oxidation away.
by gkaiseril
Fri Jul 26, 2019 3:54 pm
Forum: Automation, sensing and robotics
Topic: Battery and power adapter for RPI?
Replies: 2
Views: 164

Re: Battery and power adapter for RPI?

There are special circuits for connecting power supplies and batteries together and charging the batteries. I would look for a commercial circuit board to accomplish this task.
by gkaiseril
Wed Jul 24, 2019 2:11 pm
Forum: General discussion
Topic: can I remove the browser but still use scratch
Replies: 4
Views: 227

Re: can I remove the browser but still use scratch

It should not cause a problem. I would make a backup of the system and remove the web browser and see what happens.

Or you might consider creating a user for each child and remove them from the "netdev" and "dialout" groups. This would prevent those users form accessing the internet.
by gkaiseril
Sun Jul 21, 2019 10:26 pm
Forum: General discussion
Topic: file transfer help
Replies: 3
Views: 174

Re: file transfer help

If the USB drive is formatted as an NTFS you will have to install an NTFS driver on the Pi like the NTFS-3g driver.
by gkaiseril
Sun Jul 21, 2019 3:14 pm
Forum: Beginners
Topic: Audiophile player for Wheezy
Replies: 14
Views: 517

Re: Audiophile player for Wheezy

Not only will you need a player with excellent transmission to a pre-amp level output and then excellent prea-amp, amp, and speakers. Remember you system will only be as good as the weakest component.
by gkaiseril
Sun Jul 21, 2019 2:56 pm
Forum: Troubleshooting
Topic: after upgrade, unable to reboot
Replies: 14
Views: 727

Re: after upgrade, unable to reboot

Buster has a known issue with the USB boot not ready at this time. This means it is not working but is being worked on. So Buster might not be the best choice at this time.
by gkaiseril
Sun Jul 21, 2019 2:36 pm
Forum: Camera board
Topic: Camera about 30 to 60 cm from the Pi board.
Replies: 11
Views: 392

Re: Camera about 30 to 60 cm from the Pi board.

There are several options available for a remote camera. There are DSI/CSI cables of various lengths up to 610mm or 24 inches and there are even connectors to join several together. As noted above there are even devices to convert the DSI/CSI ribbon to an HDMI ribbon. A more complex option would be ...

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