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by wh7qq
Fri Sep 20, 2019 12:34 am
Forum: General discussion
Topic: Backlight blanking
Replies: 9
Views: 186

Re: Backlight blanking

Yeah, this seems to be a neglected issue...my Mint box is nice that way and requires you to sign in again to get back to the desktop but the RPi does not...regardless of the screen in use.. This with a ViewSonic VA 2223wm HDMI type but with an old style cold cathode backlight so it sucks about 70 wa...
by wh7qq
Fri Sep 13, 2019 8:13 pm
Forum: Troubleshooting
Topic: Getting MHS35 tft display to 480x320 resolultion
Replies: 0
Views: 98

Getting MHS35 tft display to 480x320 resolultion

I recently bought a Kuman MHS35 (3.5") tft display from Amazon https://www.amazon.com/gp/product/B07P7TLLRN/ref=ppx_yo_dt_b_asin_title_o05_s01?ie=UTF8&psc=1 to use with my RPi 3. To date, I have had no luck getting it to make the advertised 480x320 resolution available including multiple rewrites of...
by wh7qq
Sun Sep 08, 2019 8:10 pm
Forum: Raspbian
Topic: How to disable screen blanking
Replies: 44
Views: 261044

Re: How to disable screen blanking

@alecsy: Thanks for the post and the research...it is working for me as well. Yours was the first post I saw searching on "screen blank". I am using a MHS35 tft display and having it turn off all the time was a serious problem.
by wh7qq
Sun Sep 08, 2019 12:38 am
Forum: General discussion
Topic: Alsamixer [solved}
Replies: 1
Views: 118

Re: Alsamixer [solved]

That got a big respose...zip! Just as well, I have solved it myself in the mean time. Alsamixer needs a "sound card" to load properly and I was trying to bring it up with an MHS3.5 tft display in place....they seem to fight and the tft wins...alsamixer will not load if a sound card cannot be detecte...
by wh7qq
Fri Sep 06, 2019 12:38 am
Forum: General discussion
Topic: Angled case
Replies: 15
Views: 556

Re: Angled case

Sorta solved the problem...loaded up a fresh (7/10) copy of Buster desktop and contrary to directions, got the 3 all set up with a regular HDMI monitor.: did the updates, and set up the resolution, from the 1920x1080 to 320x480 which is native for the display. Then I went into the LXTerminal and inc...
by wh7qq
Thu Sep 05, 2019 1:54 am
Forum: General discussion
Topic: Alsamixer [solved}
Replies: 1
Views: 118

Alsamixer [solved}

Is it just me, or is alsamixer gone with the wind? a cli "alsamixer" gets "cannot open mixer: Invalid argument." Alsa-utils is installed, 1.1.8.2. " Amixer" gets the same response: "...Invalid argument". I am missing the secret.
by wh7qq
Wed Sep 04, 2019 11:22 pm
Forum: General discussion
Topic: Display not working on Raspberry Pi 3 XPT 2046 3.5 inch display
Replies: 5
Views: 190

Re: Display not working on Raspberry Pi 3 XPT 2046 3.5 inch display

The instructions are linked from this http://www.neosecsolutions.com//products.php?48&cPath=20 The config.txt and cmdline.txt are steps 11 and 12. NOTE: These are for the Neosec 3.5" touchscreen. Your vendor *should* have comparable information for their product. If they don't, I would drop that ve...
by wh7qq
Wed Sep 04, 2019 1:17 am
Forum: General discussion
Topic: Ready to use rasp 3b+ kit
Replies: 4
Views: 222

Re: Ready to use rasp 3b+ kit

Amazon.com has a wide range of "kits" for Retropi use. Depending on if you are starting from scratch or have other bits on hand, make your choice and pay the price. As you know enough to get online and ask this question, you probably can manage one of the kits. On the other hand, if you have any int...
by wh7qq
Sun Sep 01, 2019 10:56 pm
Forum: General discussion
Topic: Angled case
Replies: 15
Views: 556

Re: Angled case

I ran into similar issues with the OK etc box being off the bottom of the screen with the Pi Foundation 7 inch touch screen. I was able to drag the Window up the screen to get to it. Right click and select "Move". That was early on when it first came out, might have even been the set screen resolut...
by wh7qq
Sun Sep 01, 2019 9:28 pm
Forum: General discussion
Topic: Angled case
Replies: 15
Views: 556

Re: Angled case

That one is probably a bit too bulky? https://www.ebay.com/itm/Plastic-Enclosure-Electronics-Project-Case-Instrument-Shell-Box-DIY-200x175x70mm/382536900011 Just a bit...nice looking case otherwise. Actually I was looking for something on the order of the cases for larger screens that Amazon carrie...
by wh7qq
Sat Aug 31, 2019 8:00 pm
Forum: Advanced users
Topic: Looking for Temperature Measurements of Raspberry Pi in Different States/Operations
Replies: 19
Views: 750

Re: Looking for Temperature Measurements of Raspberry Pi in Different States/Operations

A closed case is a bad idea for any RPi from the 3B onward. My 3B, even with an open case , would overheat with java and graphics intensive web pages and I would consistently see the little red thermometer in the upper right of the display. That said, I have a B+ running as a pi-hole (headless) in a...
by wh7qq
Fri Aug 30, 2019 10:51 pm
Forum: General discussion
Topic: Angled case
Replies: 15
Views: 556

Re: Angled case

I was hoping for something a bit cosmetically nicer but the DIY approach is my last resort. Have nice plastic stock. Will cut. Eeuuch! Hard to do with enough precision that it doesn't rock (much).
by wh7qq
Fri Aug 30, 2019 4:18 pm
Forum: General discussion
Topic: Angled case
Replies: 15
Views: 556

Re: Angled case

'Fraid so. Guess I am SOL as I have no access to 3D printer. :(
by wh7qq
Fri Aug 30, 2019 6:17 am
Forum: General discussion
Topic: Angled case
Replies: 15
Views: 556

Angled case

I just received a Kuman 3.5" tft display and installed it on my RPi 3B. It is really sharp and works well, including the touch feature, but it has a very narrow viewing angle in both horizontal and vertical planes. I have looked, in vane so far, for an angled display or case for this small display. ...
by wh7qq
Sun Aug 25, 2019 2:11 am
Forum: Troubleshooting
Topic: Arduino changes serial port automatically
Replies: 2
Views: 79

Re: Arduino changes serial port automatically

I want to control NeoPixel LED lights with Raspberry pi. The lights are connected with Arduino. When I just check the arduino through my own laptop, the outputs are stable. However, when arduino is connected with Raspberry pi, the code can run for two times (I write while loop for the light) and th...
by wh7qq
Sun Aug 25, 2019 1:26 am
Forum: Troubleshooting
Topic: won't connect to wifi w/ battery?
Replies: 3
Views: 123

Re: won't connect to wifi w/ battery?

If the RPi works with the power from an "official" power supply but not with the ~9v battery pack, it points to the the wiring to and from the buck convertor and the buck converter itself. If the converter is set to a 5V output with no load, it may not deliver that voltage level under load. Either t...
by wh7qq
Wed Aug 21, 2019 7:22 pm
Forum: General discussion
Topic: Uses for Raspberry Pi Zero/Zero W?
Replies: 81
Views: 2798

Re: Uses for Raspberry Pi Zero/Zero W?

I very well may buy another 0W before I buy my first 4B+. I have zeros running IoT tasks around the house and an old B+ running a Pi-hole that could just as well be on a zero. They all run 24/7 happily without benefit of forced air cooling or even heat sinks. The low power consumption is important h...
by wh7qq
Fri Aug 16, 2019 3:57 am
Forum: General discussion
Topic: I got a big issue and i need to fix it before next week
Replies: 26
Views: 2584

Re: I got a big issue and i need to fix it before next week

For such a big urgent issue, you tell us so little: What model RPi..."B+" is rather non-specific and could apply to a variety of models? What size/make/model of uSD card and purchased how? Where were they purchased? How did you burn the images to the uSD card? How did you download and did you check...
by wh7qq
Fri Aug 16, 2019 3:46 am
Forum: General discussion
Topic: I got a big issue and i need to fix it before next week
Replies: 26
Views: 2584

Re: I got a big issue and i need to fix it before next week

For such a big urgent issue, you tell us so little: What model RPi..."B" is rather non-specific? What size/make/model of uSD card and purchased how? How did you burn the images to the uSD card? How did you download and did you check sha256sum of your download .zip to be sure it is complete. It sound...
by wh7qq
Sun Aug 11, 2019 6:08 pm
Forum: General discussion
Topic: WiringPi to be deprecated?
Replies: 12
Views: 1518

Re: WiringPi to be deprecated?

As is often the case with open source software, the solo maintainer gets older, tired, and fed up. It is unfortunate reality. Thanks Gordon, for a really excellent library that has enabled my home automation efforts with simple command-line statements that required no programming skills. It "just wo...
by wh7qq
Sat Aug 10, 2019 7:13 pm
Forum: General discussion
Topic: battery questions
Replies: 4
Views: 178

Re: battery questions

There are some questions that need answers before you start, especially, how long you intend to have it operating on battery power before recharging. For some reason, your first link does not respond for me so I can't speak to the display but the controller board will require 12 volts at an idle pow...
by wh7qq
Fri Aug 09, 2019 9:00 pm
Forum: General discussion
Topic: Run fan off USB port
Replies: 11
Views: 511

Re: Run fan off USB port

Imperf3kt wrote:
Thu Aug 08, 2019 10:32 pm
The black plastic strip won the base of the GPIO can be removed with a small flat screwdriver and working gently from end to end.
Removing it will give you an additional ~2mm of pin you can solder additional wires to without interfering with hats.
Good info...never thought of that.
by wh7qq
Fri Aug 09, 2019 8:20 pm
Forum: General discussion
Topic: Pi 3 - Thermostat Wiring Issue
Replies: 19
Views: 608

Re: Pi 3 - Thermostat Wiring Issue

You obviously didn't read the original post: The color-coding and lead lettering shown is precisely that used on all HVAC systems, and the wiring is connected to the Normally Open contacts on the relays as it should be. All the OP needs is a temperature sensor and he's well on his way to building h...
by wh7qq
Fri Aug 09, 2019 3:00 am
Forum: General discussion
Topic: No video at boot pi3 plus new
Replies: 3
Views: 124

Re: No video at boot pi3 plus new

The RPi (any model but the 4B which needs an adapter) should work directly with an HDMI-TV display but that depends a bit on the display. Converters to VGA displays have special requirements. I believe there is a "sticky" on this forum about display problems and the things to do to resolve them. In ...
by wh7qq
Fri Aug 09, 2019 2:34 am
Forum: General discussion
Topic: Supply 5V 3A
Replies: 2
Views: 115

Re: Supply 5V 3A

You don't tell us what you have connected to the RPi...USB, hats, etc. It sounds as though your load is enough to pull down the supplied voltage below the threshold. You also do not tell us what sort of supply it is, other than that it came with your RPi. Maybe your seller shipped a supply with a sm...

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