Go to advanced search

by LTolledo
Mon Sep 28, 2020 11:36 am
Forum: Advanced users
Topic: RPI4 - USB Boot SSD
Replies: 18
Views: 781

Re: RPI4 - USB Boot SSD

can I just update the bootloader without updating the firmware?
by LTolledo
Mon Sep 28, 2020 11:17 am
Forum: Advanced users
Topic: RPI4 - USB Boot SSD
Replies: 18
Views: 781

Re: RPI4 - USB Boot SSD

I have not upgraded this RPi4B-4G yet....fearing my KVM switch wont be function-able after update & upgrade (actually confirmed it before and no fix yet) however, seeing the post above (4-b) made me check the raspi-config raspi-config boot selection on RPI4B-4G desktop.jpg and there it is.... wow! s...
by LTolledo
Mon Sep 28, 2020 10:13 am
Forum: Troubleshooting
Topic: Raspberry Pi 3 B V.12 (non plus) not working
Replies: 19
Views: 437

Re: Raspberry Pi 3 B V.12 (non plus) not working

there is also a mention of "GUI" and "screen" on the first post....
so its not just the "USB drive" connected to the RPi
a "hidden" keyboard and mouse as well?
and "hidden" ethernet LAN connection perhaps?

a posted image of the setup will probably be more convincing....
by LTolledo
Mon Sep 28, 2020 9:38 am
Forum: Beginners
Topic: LED Module with constant current driver and controlling the LED with GPIO
Replies: 6
Views: 239

Re: LED Module with constant current driver and controlling the LED with GPIO

a link to the data sheet of the LED module would be better

it will show us:
how it is supposed to be wired,
how it it supposed to be powered,
how it is supposed to be controlled

the table above does not show that...
by LTolledo
Mon Sep 28, 2020 8:48 am
Forum: Troubleshooting
Topic: Raspberry Pi 3 B V.12 (non plus) not working
Replies: 19
Views: 437

Re: Raspberry Pi 3 B V.12 (non plus) not working

2A is not enough
voltage probably dipped well below the safe minimum voltage...
that prevented the board from booting...
by LTolledo
Mon Sep 28, 2020 3:50 am
Forum: Networking and servers
Topic: VNC on bootup
Replies: 7
Views: 290

Re: VNC on bootup

the IP address is the IP of the RPivserver which you need to connectto. if it does not have a static IP (or the router is not reserving a specific IP) address then most likely the IP address of the RPi may change during every boot. that is why it is better to have a static (or reserved) IP address f...
by LTolledo
Mon Sep 28, 2020 3:36 am
Forum: Beginners
Topic: 3V logic
Replies: 14
Views: 479

Re: 3V logic

what is your "sensor"? if your "sensor" can be powered by 3.3v and function properly, then it might output 3.3v... check first without connecting to the RPi. if your "sensor" cannot be powered by 3.3v, then you'll need a transistor (or mosfet) switch. an opto-couple will also work. as you mentioned ...
by LTolledo
Sun Sep 27, 2020 10:06 pm
Forum: Networking and servers
Topic: VNC on bootup
Replies: 7
Views: 290

Re: VNC on bootup

in my case I check the IP address of the VNC server
using ifconfig on the server side

then enter that IP address on the client side...
provide the password and am in...

later on I can rename the VNC connection to whatever name I choose, like for example "Melchior", "Balthazar", "Casper", etc
by LTolledo
Sun Sep 27, 2020 8:53 pm
Forum: Troubleshooting
Topic: Low voltage warning message text
Replies: 25
Views: 934

Re: Low voltage warning message text

This new warning display is designed to be harder to ignore - undervoltage causes so many issues that it is necessary to make it clear to the user that there is a problem that needs to be solved. it will still be ignored by those who willfully choose to ignore it. then come back complaining later.....
by LTolledo
Sat Sep 26, 2020 9:30 pm
Forum: General discussion
Topic: Unboxing a Raspberry 4 (8GB version)
Replies: 24
Views: 744

Re: Unboxing a Raspberry 4 (8GB version)

what?
nobody remembers the "flying microSD card phenomenon" associated with the springy microSD card slot? :shock:

while handling an operational RPi, a slight nudge on the microSD card ejects the microSD card from the slot, flying away to the unknown..
by LTolledo
Sat Sep 26, 2020 9:12 pm
Forum: Troubleshooting
Topic: 3.3V RELAY BOARD QUESTIONS
Replies: 2
Views: 81

Re: 3.3V RELAY BOARD QUESTIONS

its not strange... the most common relay boards are "active low" meaning a 0v potential is required to activate the relay circuit. 4-channel-relay-board.jpg there are some relay modules where the relay may be switched either "active low" or "active high", depending on a jumper setting also do note t...
by LTolledo
Sat Sep 26, 2020 12:23 pm
Forum: Troubleshooting
Topic: Accessing Rasberry Pi NAS with Linux
Replies: 7
Views: 295

Re: Accessing Rasberry Pi NAS with Linux

My 2 active NAS are RPi based (RPi2Bv1.2 and RPi4B-2G) NAS HDDs (yes am using the old reliable and cheap spinning rust) are formatted as EXT4 drives and shared via samba and I can access the contents of those NAS on this RPi4B-4G with RPiOS32 full desktop, or on a w$ PC or on an android phone or oth...
by LTolledo
Sat Sep 26, 2020 12:12 pm
Forum: Beginners
Topic: Bad sound quality from RPi to Teensy with I2S
Replies: 10
Views: 261

Re: Bad sound quality from RPi to Teensy with I2S

Sound from RPi is not bad the "middle man" made it bad there are better USB audio solutions.... cracks and crackles may be caused by ground fault... check your grounding... all grounds must be connected to a single point, not pass to each device. or use a ground fault isolator between the "middle ma...
by LTolledo
Sat Sep 26, 2020 12:05 pm
Forum: Troubleshooting
Topic: Warning DC/DC converters with variable output
Replies: 12
Views: 543

Re: Warning DC/DC converters with variable output

I've had experienced what the OP had, during one of my latest build of my buck converter top board for the RPi3B. while adjusting the output voltage to 5.05v (prior to actual integration with the RPi board) voltage did jumped all over the place a slight nudge on the trimmer immediately changed the o...
by LTolledo
Fri Sep 25, 2020 1:45 pm
Forum: General discussion
Topic: Is an HDMI audio splitter worth it?
Replies: 5
Views: 211

Re: Is an HDMI audio splitter worth it?

how about getting a HAT that outputs SPDIF optical and coax

like:
https://shop.justboom.co/products/justb ... -zero-phat
https://www.hifiberry.com/digis/

there were even "clones" of the hifiberry digis a few years ago....
by LTolledo
Fri Sep 25, 2020 12:43 pm
Forum: General discussion
Topic: Raspberrry pi zero input pin voltage regulator
Replies: 3
Views: 108

Re: Raspberrry pi zero input pin voltage regulator

what is this "9v source" of yours? care to elaborate? (hope it does not require national security clearance on your part :mrgreen: ) a voltage divider, an opto-isolator, a transistor or mosfet, even a relay may be used.... depending on this "source" of yours also what does your code need to do with ...
by LTolledo
Fri Sep 25, 2020 12:30 pm
Forum: Beginners
Topic: Is it possible to partition 64Gb SD card to use as USB external storage?
Replies: 5
Views: 170

Re: Is it possible to partition 64Gb SD card to use as USB external storage?

better format it as EXT4 if to be used exclusively for RPi/Linux if not, and you still want to use it in w$ PC, better format it as NTFS* or partition it into two, one EXT4 and the other NTFS... or even three...with FAT32 partition or 4 5.... 6....... 7..........etc you're free to do as you like... ...
by LTolledo
Fri Sep 25, 2020 12:20 pm
Forum: Beginners
Topic: How to switch many (up to 24) relay's via the GPIO
Replies: 17
Views: 527

Re: How to switch many (up to 24) relay's via the GPIO

just short the LEDs, (or the 1K resistor, only on 3v relay modules only) remove JD-VCC jumper, supply beefed up amp 3v to JD-VCC pin (again for 3v relay modules only) then you're good to go... for 5v modules short the LEDs remove JD-VCC jumper, supply beefed up amp 5v to JD-VCC pin then you're good ...
by LTolledo
Thu Sep 24, 2020 1:31 pm
Forum: General discussion
Topic: Automating a script to Turn On/Off the Lights connected to Sonoff WiFi Smart Switch
Replies: 13
Views: 675

Re: Automating a script to Turn On/Off the Lights connected to Sonoff WiFi Smart Switch

???? If the switch is "smart" why do you need a script to automate it, unless it's actually "dumb" :lol:
by LTolledo
Thu Sep 24, 2020 12:40 pm
Forum: Beginners
Topic: Using HATs on Raspberry Pi Zero
Replies: 7
Views: 262

Re: Using HATs on Raspberry Pi Zero

may not be convincing.... but I'll post anyway....
RPiZW-DAC-Disp-Assy2.jpg
RPiZW-DAC-Disp-Assy2.jpg (201.33 KiB) Viewed 118 times
by LTolledo
Thu Sep 24, 2020 12:18 pm
Forum: Beginners
Topic: Not all websites will load
Replies: 2
Views: 100

Re: Not all websites will load

can you enumerate all of those "websites" that does not load?
by LTolledo
Thu Sep 24, 2020 12:15 pm
Forum: Beginners
Topic: How to switch many (up to 24) relay's via the GPIO
Replies: 17
Views: 527

Re: How to switch many (up to 24) relay's via the GPIO

I'd use a I/O expander IC like the MCP23017, two of those actually, so I can control up to 32 relays. (2 x 16s or 4 x 8s, or 8 x 4s) as the I/O expanders are used as output only, I can power the I/O expander with 5v from the PSU, and not from the RPi if my main 5v PSU will allow it, I'd add more.......
by LTolledo
Thu Sep 24, 2020 10:58 am
Forum: Troubleshooting
Topic: Raspberry pi imager broke my microsd!
Replies: 4
Views: 194

Re: Raspberry pi imager broke my microsd!

....or could be "end of life" of microSD....
how old is it anyway?
how many hours has it been used?

is it Silicon Power or another brand?

also the correct term is "I broke my microSD via Raspberry Pi imager", not the other way around...
by LTolledo
Thu Sep 24, 2020 10:19 am
Forum: General discussion
Topic: RASPBERRY PI 3B SETUP
Replies: 3
Views: 161

Re: RASPBERRY PI 3B SETUP

to use laptop displays for RPi, you need to "cannibalize" the laptop to extract the display unit then connect the extracted display unit to a compatible LVDS unit and after that you can now connect your RPi to your former laptop's display like what I did here: MSI-laptopscreen.jpg feel free to inter...
by LTolledo
Thu Sep 24, 2020 3:30 am
Forum: Beginners
Topic: Power supply for Raspberry Pi 4 + touchscreen
Replies: 2
Views: 159

Re: External 5V power supply for this touchscreen necessary?

better get a separate power supply for the monitor
or get a bigger power supply and split it between the RPi and monitor

Go to advanced search