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by alphanumeric
Tue Sep 01, 2020 8:09 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Dashbord with 4 gauges from 4 displays
Replies: 14
Views: 682

Re: Dashbord with 4 gauges from 4 displays

Just FYI, you can drive 4 displays via SPI. SPI0 can drive two displays via CE0 and CE1 as can SPI1.
https://pinout.xyz/pinout/spi
by alphanumeric
Tue Sep 01, 2020 8:01 pm
Forum: HATs and other add-ons
Topic: Need some help with getting better temp readings with my Sense Hat ...
Replies: 8
Views: 306

Re: Need some help with getting better temp readings with my Sense Hat ...

I used a Perma Proto Hat on a stacking header.
https://www.adafruit.com/product/2310
It also get you access to the GPOI Pins to ad extra devices.
by alphanumeric
Fri Aug 28, 2020 7:05 pm
Forum: General discussion
Topic: Favorite Projects
Replies: 7
Views: 331

Re: Favorite Projects

My project build pictures are here if you want a look see. Its my Public One Drive folder. https://1drv.ms/u/s!AjOYwiwlwDtpgUMsp2qnevKpGEHb?e=LdgLim My Pirate (Internet) Radio I use almost daily. I hit the button and listen to Classic Rock. Then hit the shutdown button when I'm done. My Weather Cloc...
by alphanumeric
Wed Aug 26, 2020 11:01 pm
Forum: General discussion
Topic: My favorite time & date settings for Rasperry PI Desktop/OS
Replies: 14
Views: 1189

Re: My favorite time & date settings for Rasperry PI Desktop/OS

That is what I'm currently using.
%a %b %-d %-I:%M %p
12 hour , AM PM indication with no leading Zero. :D
by alphanumeric
Sun Aug 23, 2020 5:57 pm
Forum: General discussion
Topic: LCD 3.5 plus fan Is It possible?
Replies: 7
Views: 1396

Re: LCD 3.5 plus fan Is It possible?

The Pimorni Fan Shim can be plugged into the Pi's GPIO and a Hat plugged in on top of it. You may have to use a Booster header to get enough space for good airflow though. The Fan Shim uses more than just the power pins though so you'd have to check for pin conflicts with what ever display you want ...
by alphanumeric
Sun Aug 23, 2020 10:37 am
Forum: General discussion
Topic: LCD 3.5 plus fan Is It possible?
Replies: 7
Views: 1396

Re: LCD 3.5 plus fan Is It possible?

What fan are you wanting to connect?
by alphanumeric
Fri Aug 21, 2020 11:33 am
Forum: Beginners
Topic: SSH / Wifi failed after setting up static IP
Replies: 6
Views: 262

Re: SSH / Wifi failed after setting up static IP

Like I said, I'm no expert. ;) I'll leave this to those that actually know what they are talking about. :D
by alphanumeric
Fri Aug 21, 2020 8:03 am
Forum: Beginners
Topic: SSH / Wifi failed after setting up static IP
Replies: 6
Views: 262

Re: SSH / Wifi failed after setting up static IP

Just a FYI post. When setting static IP's use an IP address that is outside of the range given out by your router. I use addresses in the range of 192.168.0.101 and above. If you set a static IP that is already in use, or latter given out by your router, it will crash your network. I'm no expert, bu...
by alphanumeric
Wed Aug 19, 2020 11:52 am
Forum: Beginners
Topic: Powering A Raspberry Pi 4
Replies: 10
Views: 570

Re: Powering A Raspberry Pi 4

You can get factory matched multi cell LIPO batteries that just have the one power cable / JST plug. You may need something like that to get the current you want. 3A @ 5V is 15 watts. You'll be trying to draw close to 4A out of your LIPO to get it. Granted that worst case scenario. But if your batte...
by alphanumeric
Tue Aug 18, 2020 11:21 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Getting started with SPI displays?
Replies: 1
Views: 157

Re: Getting started with SPI displays?

For what it's worth, I have this one, https://shop.pimoroni.com/products/1-3-spi-colour-lcd-240x240-breakout And set it up with this library, https://github.com/pimoroni/st7789-python I did struggle a bit to get it working. https://forums.pimoroni.com/t/1-3-color-tft-lcd-on-btreakout-garden-phat-spi...
by alphanumeric
Sun Aug 16, 2020 7:29 pm
Forum: General discussion
Topic: How necessary is extra cooling for the RPi4 now?
Replies: 26
Views: 1935

Re: How necessary is extra cooling for the RPi4 now?

I know when the RPi4 first came out it needed some extra cooling. No you don't. It did not. My Pi 4 have never had heat sinks or fans. They work fine. Of course if you are loading it with work that causes it to throttle the CPU and you want some performance back, then stick a heat sink on it, use a...
by alphanumeric
Wed Aug 12, 2020 6:50 pm
Forum: Beginners
Topic: PI0 WH as a USB HID keyboard on windows 10?
Replies: 13
Views: 365

Re: PI0 WH as a USB HID keyboard on windows 10?

Stuff like this
https://learn.adafruit.com/pro-trinket-keyboard

It shows buttons, but it should be doable to just wait so long and send the keycodes without using any button press.

Sorry if I'm taking this off topic a bit. This should be doable on a Pi, but I have no idea how you do it.
by alphanumeric
Wed Aug 12, 2020 6:39 pm
Forum: Beginners
Topic: PI0 WH as a USB HID keyboard on windows 10?
Replies: 13
Views: 365

Re: PI0 WH as a USB HID keyboard on windows 10?

Ok, that wasn't obvious from what you posted. There are microcontrollers that I believe will do that? I'm not saying it can't be done with a Pi, just that there may other easier ways to do it.
by alphanumeric
Wed Aug 12, 2020 6:28 pm
Forum: Beginners
Topic: PI0 WH as a USB HID keyboard on windows 10?
Replies: 13
Views: 365

Re: PI0 WH as a USB HID keyboard on windows 10?

Yes you have to press a key.
So you want to plug in the Pi, have it boot up, and then send the keypresses automatically?
With no physical intervention other than plugging it in?
by alphanumeric
Wed Aug 12, 2020 6:00 pm
Forum: Troubleshooting
Topic: Raspberry Pi Failing Everytime Power is Lost and on Reboots
Replies: 17
Views: 473

Re: Raspberry Pi Failing Everytime Power is Lost and on Reboots

I use sudo shutdown now -P in my python code that I run on my headless systems. As far as I know it hasn't caused me any issues. I don't remove power until the status LED stops blinking. I have on occasion forgot to plug my HDMI cable in before booting up my Pi 4B. This leaves me with no display on ...
by alphanumeric
Wed Aug 12, 2020 5:22 pm
Forum: Beginners
Topic: PI0 WH as a USB HID keyboard on windows 10?
Replies: 13
Views: 365

Re: PI0 WH as a USB HID keyboard on windows 10?

According to the product page. Keybow is powered by a Raspberry Pi Zero WH (with pre-soldered header), and uses the Zero's USB HID gadget mode so that it appears as a real keyboard when plugged into your computer with the included USB cable. Maybe I misunderstood what you were looking for? It can be...
by alphanumeric
Sat Aug 08, 2020 7:42 pm
Forum: General discussion
Topic: Pi Zero camera cable for official case
Replies: 10
Views: 452

Re: Pi Zero camera cable for official case

I do believe this will work, https://shop.pimoroni.com/products/came ... 803924051 The 38m one. Not sure if they ship to Poland though?
All my Official Zero cases came with that cable, and the 4 rubber feet.
by alphanumeric
Sat Aug 08, 2020 11:01 am
Forum: General discussion
Topic: Easy shutdown/restart using a toggle switch!!!?
Replies: 20
Views: 8758

Re: Easy shutdown/restart using a toggle switch!!!?

@thagrol That all looks to be correct. :D At least as far as my understanding goes. ;)
by alphanumeric
Fri Aug 07, 2020 10:34 pm
Forum: Troubleshooting
Topic: PI Zero W dead?
Replies: 3
Views: 141

Re: PI Zero W dead?

Yes, just reimage it and start over with a fresh install.
by alphanumeric
Fri Aug 07, 2020 7:35 pm
Forum: General discussion
Topic: Easy shutdown/restart using a toggle switch!!!?
Replies: 20
Views: 8758

Re: Easy shutdown/restart using a toggle switch!!!?

The downside to using the reset or global enable etc pins, is if used while the Pi is running, it does a hard reboot. That's not a good thing.
by alphanumeric
Fri Aug 07, 2020 7:17 pm
Forum: General discussion
Topic: Easy shutdown/restart using a toggle switch!!!?
Replies: 20
Views: 8758

Re: Easy shutdown/restart using a toggle switch!!!?

it already has a shutdown button (that doesn't use GPIO 3), but didn't have a bootup function built in. Yes, that is what I said. Other pins don't work with the dt trick. To repeat, unless something has changed in the last two weeks: If you do a fresh PiOS install and add that line then simply push...
by alphanumeric
Fri Aug 07, 2020 6:22 pm
Forum: General discussion
Topic: Easy shutdown/restart using a toggle switch!!!?
Replies: 20
Views: 8758

Re: Easy shutdown/restart using a toggle switch!!!?

Yeah, dtoverlay=gpio-shutdown will do bootup and shutdown from GPIO 3 "if" i2c isn't enabled. If it is you need to modify the entry to use another GPIO pin. I use the following with my Pimoroni fan shim. dtoverlay=gpio-shutdown,gpio_pin=17,active_low=1,gpio_pull=up The button on the fam shim grounds...
by alphanumeric
Tue Aug 04, 2020 7:07 pm
Forum: Troubleshooting
Topic: Pi 4 Cooling and Hats
Replies: 8
Views: 2580

Re: Pi 4 Cooling and Hats

IDE cables are female < to >female. While the Pi is male, the Hat usually has a female header. And plugging a double sided male header into one end of the ribbon cable to make it male, will end up with the pinout reversed. Pin 1 will plug into pin 2 and pin 2 into pin 1 when plugged into the hat fro...
by alphanumeric
Mon Aug 03, 2020 8:06 pm
Forum: Beginners
Topic: How do you tell SenseHAT to stop?
Replies: 5
Views: 196

Re: How do you tell SenseHAT to stop?

sense.clear() followed by an os.system("sudo shutdown now -P") is what I code into my Sense Hat python files. Both of mine run headless and are shut down via a button connected to a GPIO pin. If you terminate a running python file from terminal etc, what was last displayed is left in memory and will...

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