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by lewmur
Fri Mar 29, 2019 5:31 pm
Forum: General discussion
Topic: How long will it stay on with a external battery?
Replies: 33
Views: 1142

Re: How long will it stay on with a external battery?

Thank you so much for all the help! :?: No one has actually given you an answer. The calculated example is exactly that - a mathematical answer and is worth the paper it’s written on (no disrespect meant). The calculated example(s) tell one the necessary parameters and the procedure to find the ans...
by lewmur
Fri Mar 29, 2019 5:12 pm
Forum: General discussion
Topic: Remove delays for USB only boot or switch USB to be the first cheked in boot sequence
Replies: 10
Views: 299

Re: Remove delays for USB only boot or switch USB to be the first cheked in boot sequence

All it takes is having a tiny vfat boot partition on the SD card with a config.txt file pointing to the SSD's boot partition. Then, instead of waiting for a no response from the built in boot order, it reads the config.txt file from the very first device it tries and immediately goes to the partitio...
by lewmur
Tue Mar 19, 2019 12:49 pm
Forum: General discussion
Topic: Wireless display
Replies: 7
Views: 334

Re: Wireless display

Not enough info. I'm assuming you are connecting the sensors to a Pi via the GPIO pins and want to "display" the readings remotely. How remote? In the same room? In another country? How many digits? What kind of accuracy? How often? Once an hour? Once every millisecond?
by lewmur
Thu Dec 27, 2018 4:17 pm
Forum: General discussion
Topic: Problem with 3.5" screen resolution [solved]
Replies: 16
Views: 741

Re: Problem with 3.5" screen resolution

I've been in the game of building my own computers since 1978 and that is hardly lesson number one. :D :D I'd certainly never buy anything of importance from a Chinese supplier, but taking a chance on something that cost only $16, to scratch an itch that has been bothering me for sometime, is a cha...
by lewmur
Wed Dec 26, 2018 1:12 pm
Forum: General discussion
Topic: Problem with 3.5" screen resolution [solved]
Replies: 16
Views: 741

Re: Problem with 3.5" screen resolution

Okay... Now that I have a little time... Lesson 1: Never buy equipment from a company that doesn't provide adequate support. For Pi accessories, no website is a strong indicator that there is no support. I've been in the game of building my own computers since 1978 and that is hardly lesson number ...
by lewmur
Tue Dec 25, 2018 9:08 pm
Forum: General discussion
Topic: Problem with 3.5" screen resolution [solved]
Replies: 16
Views: 741

Re: Problem with 3.5" screen resolution

Okay... Now that I have a little time... Lesson 1: Never buy equipment from a company that doesn't provide adequate support. For Pi accessories, no website is a strong indicator that there is no support. I've been in the game of building my own computers since 1978 and that is hardly lesson number ...
by lewmur
Tue Dec 25, 2018 8:44 pm
Forum: General discussion
Topic: Problem with 3.5" screen resolution [solved]
Replies: 16
Views: 741

Re: Problem with 3.5" screen resolution

Is this it? https://www.newfrog.com/product/3.5-inch-hdmi-touch-screen-lcd-display-%2Babs-case-for-raspberry-pi-3b%2B-3b-2b-250175 The config settings are for HDMI only. You might want to do some Google search of this forum. There are many posts concerning 3.5" screens. From what I remember the sma...
by lewmur
Tue Dec 25, 2018 7:26 pm
Forum: General discussion
Topic: Problem with 3.5" screen resolution [solved]
Replies: 16
Views: 741

Re: Problem with 3.5" screen resolution

Are you sure Your monitor uses HDMI ? If so it should have an eprom with EDID data you can readout. The RPI is able to generate lower resolutions, for example for generating PAL and NTSC resolutions Who said anything about an HDMI monitor? I'm trying to set up a 3.5" LCD screen plugged into the GPI...
by lewmur
Tue Dec 25, 2018 7:09 pm
Forum: General discussion
Topic: Problem with 3.5" screen resolution [solved]
Replies: 16
Views: 741

Re: Problem with 3.5" screen resolution

klricks wrote:
Tue Dec 25, 2018 6:29 pm
Try enabling and configuring the framebuffer settings in /boot/config.txt
Uncommented framebuffer width and height in /boot/config.txt and set to 480 x 320 but when I rebooted, display hadn't changed.
by lewmur
Tue Dec 25, 2018 6:41 pm
Forum: General discussion
Topic: Problem with 3.5" screen resolution [solved]
Replies: 16
Views: 741

Re: Problem with 3.5" screen resolution

mahjongg wrote:
Tue Dec 25, 2018 6:31 pm
viewtopic.php?f=28&t=5851
The lowest setting there is still 640x480.
by lewmur
Tue Dec 25, 2018 6:17 pm
Forum: General discussion
Topic: Problem with 3.5" screen resolution [solved]
Replies: 16
Views: 741

Re: Problem with 3.5" screen resolution

Bought from Newfrog in China. No website. :cry:
by lewmur
Tue Dec 25, 2018 5:38 pm
Forum: General discussion
Topic: Problem with 3.5" screen resolution [solved]
Replies: 16
Views: 741

Problem with 3.5" screen resolution [solved]

I just bought a 3.5" touchscreen for my Pi 3B who's resolution is only 320 x 480 but the lowest res in Raspberry Pi Configuration is 640x 480. At this res a large portion of the screen is cut off. How can I set to lower res?
by lewmur
Sat Nov 03, 2018 3:37 am
Forum: General discussion
Topic: A good battery for the Pi 3B+?
Replies: 40
Views: 1764

Re: A good battery for the Pi 3B+?

So, your intent was to mock the OP for not stating the obvious? One should always state cost as being part of the criteria for a Pi solution? If that is the case, you should have started with the Tesla battery.
by lewmur
Fri Nov 02, 2018 11:08 pm
Forum: General discussion
Topic: A good battery for the Pi 3B+?
Replies: 40
Views: 1764

Re: A good battery for the Pi 3B+?

Ever heard of the term "overkill"? What would your solution cost vs a 5ah Power Bank for $12?
by lewmur
Fri Nov 02, 2018 4:31 pm
Forum: General discussion
Topic: A good battery for the Pi 3B+?
Replies: 40
Views: 1764

Re: A good battery for the Pi 3B+?

There a plenty of Power Banks on eBay for under $15 that will work just fine. What you have to realize is that the 3B+ itself will run just fine from a Power Banks 2A output. The only time you'd need more than 2A would be if you were really loading the USB ports. And since you'd be powering your USB...
by lewmur
Fri Nov 02, 2018 3:24 pm
Forum: General discussion
Topic: Some fast questions about raspberry pi
Replies: 15
Views: 765

Re: Some fast questions about raspberry pi

If I'm not mistaken, even though the Pi has a 64bit SoC, its OS is only 32bit. And Chrome has stopped supporting 32bit. But, as others have stated, there isn't much difference between Chrome and Chromium. Chromium will still sync with all of your Chrome settings and saved passwords.
by lewmur
Wed Sep 12, 2018 6:27 pm
Forum: General discussion
Topic: 3B+ as a Wireless Access Point
Replies: 22
Views: 7038

Re: 3B+ as a Wireless Access Point

This can be an interesting experiment. I know 'cause I did it. But, in the end, IMHO, it is pointless. The result is always unreliable and you can purchase a range extender/access point for much less money than the cost a Pi plus wifi dongle.
by lewmur
Sat Aug 25, 2018 4:14 pm
Forum: Other
Topic: AROS - A lightweight multitasking OS, perfect for the Pi
Replies: 18
Views: 8123

Re: AROS - A lightweight multitasking OS, perfect for the Pi

Linux isn\'t really limited on such a small platform, and it\'s used in a ton of embedded devices. The problem is people are going to try to run all their favorite incredibly bloated desktop distros designed for machines with a lot more ram, all the way down to the kernel. These load a lot of unnec...
by lewmur
Tue Aug 14, 2018 4:51 pm
Forum: General discussion
Topic: Can I connect my raspberry Pi to my laptop to increase performance?
Replies: 12
Views: 800

Re: Can I connect my raspberry Pi to my laptop to increase performance?

Even an old x86 laptop is probably more powerful the a Pi3B+. And it is also quite probable that it is Windows and not the hardware that is making the laptop slow. Search this forum for how to install Debian with the Raspbian Desktop on an x86 machine. That will do a lot to make any old laptop funct...
by lewmur
Tue Aug 14, 2018 4:41 pm
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Burn .iso files to USB?
Replies: 12
Views: 2668

Re: Burn .iso files to USB?

I've always used rufus.exe for putting an iso onto a USB stick in Windows. https://rufus.akeo.ie/
by lewmur
Sun Aug 12, 2018 4:06 pm
Forum: General discussion
Topic: Which operating system for Pi Zero W as access point, MQTT only
Replies: 29
Views: 1572

Re: Which operating system for Pi Zero W as access point, MQTT only

I think the important point has been missed. GUI or not, IMO, is not the question. Which OS is the question. And my answer is, stay away from Stretch Debian. It makes it more difficult the bridge from the wired port to the wifi port to create the AP. It is MUCH easier to do in earlier versions of D...
by lewmur
Sun Aug 12, 2018 4:03 pm
Forum: General discussion
Topic: Which operating system for Pi Zero W as access point, MQTT only
Replies: 29
Views: 1572

Re: Which operating system for Pi Zero W as access point, MQTT only

I would be very surprised if that is true. It is wise to keep up with the latest OS releases for security and other reasons. It is true. I know because I've done it. And older OS releases still get security updates. There is no need to have the "latest and greatest" OS version unless there is a par...
by lewmur
Sun Aug 12, 2018 3:57 pm
Forum: General discussion
Topic: (Solved) Is using a non powered USB HDD possible with a Pi3B+ ?
Replies: 21
Views: 1015

Re: Is using a non powered USB HDD possible with a Pi3B+ ?

You cannot expect that just any off the shelf USB hard drive will work with your Pi 3B+ without some effort. There are (at least) two problem areas: The Pi's USB port may not be able to provide enough power for the initial spin-up of the drive. The Pi may try to boot before the drive is up to speed...
by lewmur
Sun Aug 12, 2018 3:41 pm
Forum: General discussion
Topic: (Solved) Is using a non powered USB HDD possible with a Pi3B+ ?
Replies: 21
Views: 1015

Re: Is using a non powered USB HDD possible with a Pi3B+ ?

Is it possible to get a definitive answer from the Raspberry Pi Foundation engineering people or another authorative source on whether it is possible to use a non separately powered USB HDD (powered from the USB port) with a raspberry Pi 3B+? If this sort of question is posed on multiple fora and v...
by lewmur
Sun Aug 12, 2018 2:57 pm
Forum: General discussion
Topic: Which operating system for Pi Zero W as access point, MQTT only
Replies: 29
Views: 1572

Re: Which operating system for Pi Zero W as access point, MQTT only

I think the important point has been missed. GUI or not, IMO, is not the question. Which OS is the question. And my answer is, stay away from Stretch Debian. It makes it more difficult the bridge from the wired port to the wifi port to create the AP. It is MUCH easier to do in earlier versions of Deb.

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