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by alphanumeric
Thu Oct 31, 2019 8:09 pm
Forum: Beginners
Topic: Rasp4 buster shutdown via desktop power stays up
Replies: 7
Views: 252

Re: Rasp4 buster shutdown via desktop power stays up

Grounding GPIO 3 will not boot it up if you enable POWER_OFF_ON_HALT. You will have to ground the Global EN pin to boot it up when in that mode. Thats how my Pi 4B was when I got it. I updated my EEPROM with the new code, POWER_OFF_ON_HALT disabled, and grounding GPIO 3 now works like it does on my ...
by alphanumeric
Sat Oct 26, 2019 5:12 pm
Forum: Troubleshooting
Topic: Raspberry pi 4b peripherals still powered on after shutdown
Replies: 9
Views: 667

Re: Raspberry pi 4b peripherals still powered on after shutdown

Just be aware that this also affects booting back up. Grounding GPIO 3 will no longer boot up your Pi 4B. I don't think the RUN pin will work either? You'll have to momentarily ground Global_EN pin or power cycle you Pi.
by alphanumeric
Thu Oct 24, 2019 11:31 am
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 978

Re: Problem with raspbian buster on RaspberryPi 4B

I loaded raspbian buster on Rapsberry Pi 3 B+, the WIFI does not work! It stucks. I use the on-board and 2 external modules with external antennas, nothing... Have you set the country code (raspi-config or directly in wpa-supplicant)? What is this?? Different countries have different channel layout...
by alphanumeric
Wed Oct 23, 2019 1:28 pm
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 978

Re: Problem with raspbian buster on RaspberryPi 4B

I just ran apt update on my Pi 3B+ running Buster ( first release). This Pi hasn't been updated in a while. There was one extra Get, Get :5 but no timeout error. It showed 187 packages to update. Upgrade is running as I type this.
by alphanumeric
Wed Oct 23, 2019 8:59 am
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 978

Re: Problem with raspbian buster on RaspberryPi 4B

@ the last two posters You're both on Raspbian Buster and not something older, like Wheezy? https://www.raspberrypi.org/forums/viewtopic.php?t=237469#p1451611 Pi 4B 4 gig running Buster with Desktop 2019-09-26. I'm updating over my 5GHz WIFI. Latter on today I'll boot up one of my 3B+'s running Bus...
by alphanumeric
Tue Oct 22, 2019 7:38 pm
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 978

Re: Problem with raspbian buster on RaspberryPi 4B

I just now ran sudo apt get update. On screen I see the following Get :1 Http.... Get :2 Http.... Get :3 Http... Get :4 http... Fetched 13.4 MB in 11s (long pause) Error: Timeout was Reached Reading package lists....Done Building dependency tree Reading state Information....Done 3 packages can be up...
by alphanumeric
Tue Oct 22, 2019 9:25 am
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 978

Re: Problem with raspbian buster on RaspberryPi 4B

I should clarify my above post. If I boot up and run sudo apt update, it runs until it gets to about the third item in the list that pops up. Then just sits there like its not doing anything, times out, continues on and exits back to a prompt. If I then run it a second time it runs fine. Apt update ...
by alphanumeric
Mon Oct 21, 2019 7:26 pm
Forum: Troubleshooting
Topic: Problem with raspbian buster on RaspberryPi 4B
Replies: 21
Views: 978

Re: Problem with raspbian buster on RaspberryPi 4B

I've been getting timeout reached messages when running sudo apt update on my 4B. Almost every time I run it. That 4B connects via WIFI. Using 2.4 or 5 GHz doesn't seem to matter.
by alphanumeric
Sun Oct 20, 2019 8:03 pm
Forum: General discussion
Topic: Pi 3 A +. What is it for?
Replies: 52
Views: 2165

Re: Pi 3 A +. What is it for?

I'm going to live forever, or die trying. :P
by alphanumeric
Sun Oct 20, 2019 8:00 pm
Forum: Beginners
Topic: Issues with the K400 keyboard
Replies: 11
Views: 732

Re: Issues with the K400 keyboard

Once its paired to the Unifying Dongle, there should be no need to re pair it? As far as the PC / Pi is concerned its just a USB HID device. It thinks its a wired USB keyboard mouse. I have one of the original K400's. It has always "just worked" with any PI or PC I've plugged the dongle into. It eve...
by alphanumeric
Sun Oct 20, 2019 7:50 pm
Forum: General discussion
Topic: Pi 3 A +. What is it for?
Replies: 52
Views: 2165

Re: Pi 3 A +. What is it for?

One big advantage IMHO is, if its a headless setup where you don't need (won't be using) ethernet and 4 USB ports, its a big cost saving over a 3B or 4B. I plug my USB hub in do my setup, then just deploy it and let it use WIFI. Smaller footprint too compared to a 3B or 4B. I use them where a ZERO j...
by alphanumeric
Sun Oct 20, 2019 12:42 pm
Forum: General discussion
Topic: Pi 3 A +. What is it for?
Replies: 52
Views: 2165

Re: Pi 3 A +. What is it for?

I run Motion Eye OS on mine and use them as surveillance cameras.
https://1drv.ms/u/s!AjOYwiwlwDtpgtIa2Wo ... e=ObCEMj
I also have a couple of the older A+'s setup as weather stations.
https://1drv.ms/u/s!AjOYwiwlwDtpgq8_PRQ ... e=kj3E5v
by alphanumeric
Sat Oct 19, 2019 1:02 pm
Forum: Troubleshooting
Topic: Time resets at boot
Replies: 2
Views: 117

Re: Time resets at boot

The Raspberry Pi doesn't have a Real Time Clock, like a PC does. Thus, it will lose time when shut down. With no Internet connection it has no way to sync its time with a Time server. Normally it will remember the time when it was shut down. And then update that with the correct time retrieved from ...
by alphanumeric
Sat Oct 19, 2019 12:54 pm
Forum: Troubleshooting
Topic: 5V pins output 3.3V and 3.3V outputs 2.5V
Replies: 10
Views: 434

Re: 5V pins output 3.3V and 3.3V outputs 2.5V

What are you using for a ground reference for the meter?
by alphanumeric
Tue Oct 15, 2019 11:51 am
Forum: Beginners
Topic: Raspberry pi 4 and fan
Replies: 9
Views: 820

Re: Raspberry pi 4 and fan

The fan should not be connected directly to a GPIO. It is likely to draw too much current, and may produce back EMF when switched off. Either of these will damage the Pi. The Amazon listing does not give a specification for the fan supply (neither voltage nor current). You might get away with conne...
by alphanumeric
Mon Oct 14, 2019 7:20 pm
Forum: Beginners
Topic: Regarding the current measurement
Replies: 23
Views: 1235

Re: Regarding the current measurement

There are devices like this, https://www.adafruit.com/product/2690 To measure total current drawn by the Pi. Might be a bit of a PITA getting the adapters for it though.
by alphanumeric
Mon Oct 14, 2019 7:16 pm
Forum: Beginners
Topic: Regarding the current measurement
Replies: 23
Views: 1235

Re: Regarding the current measurement

Wouldn't a round about way to do it be monitoring the CPU load?
by alphanumeric
Mon Oct 14, 2019 12:07 pm
Forum: HATs and other add-ons
Topic: Hooking up 3 breakout boards without wires
Replies: 2
Views: 1205

Re: Hooking up 3 breakout boards without wires

The Enviro+ has a BME280, LTR-559 light sensor, and microphone all in the one unit. Plus a few other bits like a display. https://shop.pimoroni.com/products/enviro-plus I have a couple of Pi's with multiple i2c breakout boards hooked up. I have pictures here in my public Onedrive folder. https://1dr...
by alphanumeric
Sun Oct 13, 2019 6:40 pm
Forum: General discussion
Topic: Problem: RPi Zero and keyboard
Replies: 14
Views: 922

Re: Problem: RPi Zero and keyboard

I have a CanaKit branded Mini Wireless that I believe is a Rii, or Rii clone maybe. Model CK.KB-101. I haven't tried it in Buster yet but it works fine in Jessie and Stretch with its included dongle. One advantage to the Logitech Unifying dongle is as far as the PC is concerned, its just a USB HID d...
by alphanumeric
Sun Oct 13, 2019 9:36 am
Forum: General discussion
Topic: Problem: RPi Zero and keyboard
Replies: 14
Views: 922

Re: Problem: RPi Zero and keyboard

Does that dongle / keyboard work OK on a PC? I've used various supplies with my Zero's without issues. 2A, 2.5A. Some were 5V and some were 5.1V. These days I just buy the official power supply and be done with it. Especially if its a 3B or 4B. One less thing to worry about or wonder about. That bei...
by alphanumeric
Sun Oct 13, 2019 9:29 am
Forum: Troubleshooting
Topic: Smart Pi Touch 2
Replies: 11
Views: 505

Re: Smart Pi Touch 2

Good to hear. Nobody wants to break thier new toy so I can understand your apprehension. Its been a while, but I'm pretty sure my display came completely disassembled. I had to attach the cables and mount the driver board to the back of the display. I bought mine early on shortly after they were rel...
by alphanumeric
Sun Oct 13, 2019 9:17 am
Forum: General discussion
Topic: Problem: RPi Zero and keyboard
Replies: 14
Views: 922

Re: Problem: RPi Zero and keyboard

One thing I have noticed with a Zero is if its booted up, and you swap or plug something into the USB DATA port it has a habit of rebooting. That seems to be a problem with the newer models. There must have been some hardware change that was not accompanied by a revision change (same v1.1 revision ...

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