Go to advanced search

by Imperf3kt
Thu Feb 27, 2020 8:09 am
Forum: General discussion
Topic: Overclock settings
Replies: 7
Views: 180

Re: Overclock settings

Any case that serves as a heatsink should be sufficient, but your main issue with overclocking is the silicon itself may or may not clock that high. Another thing most people don't think about when overclocking is - do you even need to? There's no point having a high clock setting if you don't use it.
by Imperf3kt
Thu Feb 27, 2020 7:55 am
Forum: General discussion
Topic: Pi4 1GB Availability? US Distributor Shows It As Discontinued
Replies: 27
Views: 1111

Re: Pi4 1GB Availability? US Distributor Shows It As Discontinued

Hopefully that's convincing enough. Ah, didn't realise that. Thank you for pointing that out, I simply didn't have the time to look properly before commenting, perhaps I should have waited until I did. I still hold my opinion that the MagPi magazine sometimes has editorial issues, some life-threate...
by Imperf3kt
Thu Feb 27, 2020 4:20 am
Forum: General discussion
Topic: Pi4 1GB Availability? US Distributor Shows It As Discontinued
Replies: 27
Views: 1111

Re: Pi4 1GB Availability? US Distributor Shows It As Discontinued

Looks pretty official to me. Looks can be deceiving. The MagPi is a free[1] fanzine for users of the Raspberry Pi computer. It was created by the community[2][3] as an unofficial volunteer produced Raspberry Pi publication. https://en.wikipedia.org/wiki/The_MagPi The MagPi has been known to publish...
by Imperf3kt
Thu Feb 27, 2020 4:10 am
Forum: Other projects
Topic: Powering Raspberry Pi 4 From DC Power Supply
Replies: 9
Views: 178

Re: Powering Raspberry Pi 4 From DC Power Supply

How did you check the voltage and end up with a reading in amperage?

A standard micro usb cable won't pass 5A of current at 5v, they're only designed for about 0.5A before the voltage begins dropping.
by Imperf3kt
Thu Feb 27, 2020 3:31 am
Forum: Troubleshooting
Topic: Dead after 5.5V Input at micro USB
Replies: 45
Views: 1262

Re: Dead after 5.5V Input at micro USB

The original poster said that this site was used: https://howchoo.com/g/mwnlytk3zmm/how-to-add-a-power-button-to-your-raspberry-pi The photos look to me as if pins 1 and 2 OR 3 and 4 are connected via the button, It's the camera angle, but it looks to me like pins 5 and 6 were used. However, that's...
by Imperf3kt
Thu Feb 27, 2020 3:26 am
Forum: General discussion
Topic: Pi4 1GB Availability? US Distributor Shows It As Discontinued
Replies: 27
Views: 1111

Re: Pi4 1GB Availability? US Distributor Shows It As Discontinued

No announcement other than a single one line mention in an affiliated magazine? The publishing date for the MagPi is today and I happened across a direct link. I do not think it's linked to the main site yet. Download it and read . It's not one line the article is two pages and the following one is...
by Imperf3kt
Thu Feb 27, 2020 3:20 am
Forum: General discussion
Topic: Autonomous Car
Replies: 15
Views: 469

Re: Autonomous Car

I can't be the only person who finds the opening post suspiciously spam-like, can I? Why is a teacher asking for help? They should know about the subject if the "former" student came to them, especially at the university level. There is a distinct lack of information, only the bare minimum is provid...
by Imperf3kt
Thu Feb 27, 2020 3:00 am
Forum: Other projects
Topic: Powering Raspberry Pi 4 From DC Power Supply
Replies: 9
Views: 178

Re: Powering Raspberry Pi 4 From DC Power Supply

Check your wiring too. Too thin is no good, as is any added resistance such as loose connections, poor soldering or even switches.
by Imperf3kt
Thu Feb 27, 2020 2:52 am
Forum: General discussion
Topic: Pi4 1GB Availability? US Distributor Shows It As Discontinued
Replies: 27
Views: 1111

Re: Pi4 1GB Availability? US Distributor Shows It As Discontinued

No announcement other than a single one line mention in an affiliated magazine?
by Imperf3kt
Wed Feb 26, 2020 4:56 am
Forum: General discussion
Topic: Pi4 1GB Availability? US Distributor Shows It As Discontinued
Replies: 27
Views: 1111

Re: Pi4 1GB Availability? US Distributor Shows It As Discontinued

why has nobody yet pointed out the obvious? Obsolescence Statement Raspberry Pi 4 Model B will remain in production until at least January, 2026 from https://www.raspberrypi.org/products/raspberry-pi-4-model-b/specifications/ If one wanted to be obnoxious, I suppose they could argue that the 1GB mod...
by Imperf3kt
Tue Feb 25, 2020 7:12 am
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 331
Views: 44811

Re: New Pi 4B v1.2?

Whats wrong with the power design? A single missed resistor? That is not a mess, its a mistake, a mistake that affects an extremely low percentage of users, was admitted to and fixed (still without actual confirmation) and doesn't stop the board from functioning via other suitable methods of deliver...
by Imperf3kt
Tue Feb 25, 2020 6:59 am
Forum: Troubleshooting
Topic: Pi Zero W - Problem with antenna
Replies: 8
Views: 198

Re: Pi Zero W - Problem with antenna

Yes, there is meant to be a second one on the left, and it does appear to be missing on your Pi
by Imperf3kt
Tue Feb 25, 2020 6:54 am
Forum: Beginners
Topic: Raspberry Pi zero v1.3 Vs Raspberry Pi Zero W v1.1
Replies: 6
Views: 184

Re: Raspberry Pi zero v1.3 Vs Raspberry Pi Zero W v1.1

There is the ZeroWH which you can buy in bulk, but it costs more than all the other Zero models. Zero revisions are 1.2 and 1.3... Pi Zero W is only available in a revision 1.1 I wrote Zero not ZeroW so what is your point ? it was factually correct ! Already mention ZeroWH, so what is the issue her...
by Imperf3kt
Mon Feb 24, 2020 10:28 pm
Forum: Troubleshooting
Topic: Raspbian is taking too long to download
Replies: 2
Views: 92

Re: Raspbian is taking too long to download

internet speeds vary with traffic (both local, and the wider area), weather, your connection itself and other factors. The below website is handy for calculating exact download times (you'll never get these times unless your connection maintains 100% saturation, 100% of the time) https://www.downloa...
by Imperf3kt
Mon Feb 24, 2020 9:14 pm
Forum: Beginners
Topic: Raspberry Pi zero v1.3 Vs Raspberry Pi Zero W v1.1
Replies: 6
Views: 184

Re: Raspberry Pi zero v1.3 Vs Raspberry Pi Zero W v1.1

There is the ZeroWH which you can buy in bulk, but it costs more than all the other Zero models.
fruitoftheloom wrote:
Mon Feb 24, 2020 9:59 am
Zero revisions are 1.2 and 1.3...
Pi Zero W is only available in a revision 1.1
by Imperf3kt
Mon Feb 24, 2020 8:52 pm
Forum: Troubleshooting
Topic: Pi Zero W - Problem with antenna
Replies: 8
Views: 198

Re: Pi Zero W - Problem with antenna

I've seen people report losing WiFi after knocking off the miniscule tuning capacitors above the antenna cavity. Could you have knocked one off? They're really tiny, very easily overlooked.
by Imperf3kt
Mon Feb 24, 2020 8:46 pm
Forum: General discussion
Topic: Where can I download Raspbian 32 bit
Replies: 7
Views: 309

Re: Where can I download Raspbian 32 bit

Botspot wrote:
Mon Feb 24, 2020 6:15 pm
The latest Buster runs fine on all Pies - even on the slowest 32-bit Pi zero.
I think instead of Pi zero, you meant the Pi 1b
by Imperf3kt
Mon Feb 24, 2020 7:36 am
Forum: General discussion
Topic: Pi Zero to precisely control peltier temp?
Replies: 1
Views: 82

Re: Pi Zero to precisely control peltier temp?

The first step in any "what do I need" question, is identifying what you currently have/plan to use. What is the TEC model number? This will let us find the specs and possibly a datasheet for the device, from which people can surmise what electronics are suitable for powering the device and controll...
by Imperf3kt
Mon Feb 24, 2020 7:31 am
Forum: Beginners
Topic: Heatsink placement on 3B+
Replies: 12
Views: 310

Re: Heatsink placement on 3B+

Because under heavy load (note, heavy, not normal or regular loads) the Pi can throttle. The 3b+ especially, will reduce the turbo settings and govern the CPU down to 1200MHz once it reaches 60 degrees before fully throttling down to 600MHz at 80 degrees. Keeping it below that 60 degree threshold is...
by Imperf3kt
Sun Feb 23, 2020 9:49 pm
Forum: Beginners
Topic: Raspberry pi 4 case
Replies: 4
Views: 195

Re: Raspberry pi 4 case

It is my understanding that the official case functions as a thermal insulator, and not a heatsink.**

**Based solely on reports from this forum, I do not own an official case.
by Imperf3kt
Sun Feb 23, 2020 9:15 pm
Forum: Beginners
Topic: Raspberry Pi 4 / Fan + GPIO Breadboard
Replies: 23
Views: 746

Re: Raspberry Pi 4 / Fan + GPIO Breadboard

How did you wire the fan to your RPi? Solder it underneath? that is correct something like this RPi3B+FanPower.jpg Note that the exact spot you solder to varies by Pi model, check the reduced schematics found in the help section for your Pi model, or use the underside of the GPIO header. Also note ...
by Imperf3kt
Sun Feb 23, 2020 9:01 pm
Forum: Troubleshooting
Topic: Pi Zero W - Problem with antenna
Replies: 8
Views: 198

Re: Pi Zero W - Problem with antenna

Are you absolutely sure you have a Pi0W and not a Pi0 (same thing, but lacking the wifi and bluetooth)
by Imperf3kt
Thu Feb 20, 2020 7:32 pm
Forum: Troubleshooting
Topic: Dead after 5.5V Input at micro USB
Replies: 45
Views: 1262

Re: Dead after 5.5V Input at micro USB

I based my reply on this.
https://www.raspberrypi.org/blog/pi-power-supply-chip/
This
https://www.maxlinear.com/product/power ... cs/mxl7704
And several forum posts I cannot currently find
by Imperf3kt
Wed Feb 19, 2020 10:48 pm
Forum: Troubleshooting
Topic: Rpi4 + USB Sound Card + PAM8403 Amplifier - Buzzing/Whine Noise
Replies: 16
Views: 288

Re: Rpi4 + USB Sound Card + PAM8403 Amplifier - Buzzing/Whine Noise

4 Ohms should be fine for both amplifier modules.
It's the recommended impedance for the PAM8403 and within the recommended range for the PAM8406

Try using a lower voltage power supply for the amplifier. Try 3v3 instead of 5v, they're specced for 2.5v to 5.5v so it should work fine.
by Imperf3kt
Wed Feb 19, 2020 8:39 pm
Forum: Automation, sensing and robotics
Topic: Cat Sprayer Turret: Voltage drop running servos and motor simultaneously
Replies: 9
Views: 418

Re: Cat Sprayer Turret: Voltage drop running servos and motor simultaneously

So I purchased a 10A power supply, but unfortunately it suffered from the same issues. Link? It could be a fake, I've seen many "10Amp" power supplies on ebay that are only 10Amp on the description page and/or the label. Or it may not be enough, you still haven't told us the current requirements of...

Go to advanced search