True, but understanding why it goes wrong may help put it right.
Search found 4009 matches
- Wed Sep 18, 2019 8:58 pm
- Forum: General discussion
- Topic: Small piwiz race condition (time sync)
- Replies: 20
- Views: 448
- Wed Sep 18, 2019 8:41 pm
- Forum: General discussion
- Topic: Small piwiz race condition (time sync)
- Replies: 20
- Views: 448
Re: Small piwiz race condition (time sync)
Should we be concerned with? I wouldn't be, but I never tried to find out why systemd says it. It could make sense if you modified a service and restarted it without running that command, but in this case, contrary to the message, no changes have been made. No changes of any sort anywhere have been...
- Wed Sep 18, 2019 8:25 pm
- Forum: General discussion
- Topic: Security - Best Practices
- Replies: 2
- Views: 70
- Wed Sep 18, 2019 4:10 pm
- Forum: Troubleshooting
- Topic: USB Blown is there any USB output on GP10.
- Replies: 13
- Views: 226
Re: USB Blown is there any USB output on GP10.
The chip was pretty charred so I poked it a bit and it fell apart, I checked none of its remaining leads were shorting then as on on youtube connected pin 1 on GP10 to pp27 and it worked again and USBs too. If the chip is current limit will that effect me at all? Back in business I hope. If you rea...
- Wed Sep 18, 2019 3:52 pm
- Forum: General discussion
- Topic: stuck in wifi - Debian wheezy
- Replies: 7
- Views: 195
- Wed Sep 18, 2019 3:43 pm
- Forum: General discussion
- Topic: Power over Ethernet and Fan
- Replies: 9
- Views: 163
Re: Power over Ethernet headed
I suppose someone could design a HAT or other add-on board that would take power from those pins and convert it to something a fan could run on, but it would still only work if the Pi was connected to a PoE switch. "Someone" already has. "Someone" is RPT, and it's called the Raspberry Pi PoE HAT. :...
- Wed Sep 18, 2019 3:26 pm
- Forum: Beginners
- Topic: Leak sensor too sensitive
- Replies: 4
- Views: 80
Re: Leak sensor too sensitive
So is the capacitor essentially a low pass filter mopping up the stray noise before it gets to the transistor? Once there is a true signal does the capacitor then fully charge and then allow current to flow to the transistor? I have had a hard time finding 0μ1 capacitors. Is this another way to des...
- Wed Sep 18, 2019 9:17 am
- Forum: General discussion
- Topic: Raspberry Pi and Fotek SSR-25
- Replies: 4
- Views: 106
Re: Raspberry Pi and Fotek SSR-25
If your part in genuine it should work, but the trigger current is a little high (7.5mA) if you are drawing current from other GPIOs at the same time. A transistor to switch 5V to the trigger should solve it. Specification Edit: the default GPIO drive strength only guarantees V IH > 1.6V at 8mA, whi...
- Wed Sep 18, 2019 12:18 am
- Forum: Beginners
- Topic: Leak sensor too sensitive
- Replies: 4
- Views: 80
Re: Leak sensor too sensitive
Small capacitor (try 0μ1) base to emitter?
- Tue Sep 17, 2019 1:54 pm
- Forum: General discussion
- Topic: Low voltage warning even though gpio being powered with 5.07V?
- Replies: 11
- Views: 423
- Tue Sep 17, 2019 9:21 am
- Forum: General discussion
- Topic: RP4 USB Battery Power - E Marked Issue
- Replies: 9
- Views: 361
Re: RP4 USB Battery Power - E Marked Issue
Why do you advise against the Power Delivery spec? It is, after all, specifically for use as a power supply, up to 100W@5v. That's literally what the spec is for. See this Wikipedia article. The power limit at 5V is 15W (3A -- yes even the official Pi PSU does that). Higher power requires higher vo...
- Mon Sep 16, 2019 8:41 am
- Forum: General discussion
- Topic: Laptop speakers with Raspberry PI
- Replies: 25
- Views: 551
Re: Laptop speakers with Raspberry PI
OP's third post:W. H. Heydt wrote: ↑Mon Sep 16, 2019 1:05 amThat is the sort of information that should have been provided at the beginning. How were we to know you had such severe space constraints?
qaz wrote: The thing is that I need really thin speakers, so dunno. These are the things I thought of...
- Sun Sep 15, 2019 10:58 pm
- Forum: Beginners
- Topic: Pi 3 Model B GPIO Questions
- Replies: 6
- Views: 123
Re: Pi 3 Model B GPIO Questions
Careful. You are showing the first signs of PAD (Pi Addiction Disorder). It will take over your life completely if you let it.
With only one Pi, it's not an advanced case. Yet.
With only one Pi, it's not an advanced case. Yet.
Re: Soldering
AIUI that's how boards with a separate pad for each hole should be used -- either use the ends of the component/wire or a separate piece of hookup wire.
- Sun Sep 15, 2019 6:40 pm
- Forum: Beginners
- Topic: Pi 3 Model B GPIO Questions
- Replies: 6
- Views: 123
Re: Pi 3 Model B GPIO Questions
https://pinout.xyz/#
It's the same on all 40-pin Pis, and the first 26 are the same on later 26-pin models.
Only three pins are different (numbering only) on the earliest Pis.
It's the same on all 40-pin Pis, and the first 26 are the same on later 26-pin models.
Only three pins are different (numbering only) on the earliest Pis.
- Sun Sep 15, 2019 6:30 pm
- Forum: General discussion
- Topic: Laptop speakers with Raspberry PI
- Replies: 25
- Views: 551
- Sun Sep 15, 2019 4:38 pm
- Forum: General discussion
- Topic: Laptop speakers with Raspberry PI
- Replies: 25
- Views: 551
Re: Laptop speakers with Raspberry PI
You don't want to walk around with a pair of speakers clipped over your ears.
- Sun Sep 15, 2019 4:30 pm
- Forum: General discussion
- Topic: Laptop speakers with Raspberry PI
- Replies: 25
- Views: 551
Re: Laptop speakers with Raspberry PI
Working backwards: That Amazon amp will only drive headphones, not speakers. HermannSW's suggestion will require more than £12 worth of time to assemble a working amp (and you will need to learn to solder, and to read Chinese :lol: ) The Pimoroni board should "just work"-- but you may still need to ...
- Sat Sep 14, 2019 2:27 pm
- Forum: Troubleshooting
- Topic: Buster updates started to fail at 22th August
- Replies: 10
- Views: 411
Re: Buster updates started to fail at 22th August
OK, so what happened to 'apt-get update'? Someone decided it wasn't broke, so... I would expect "update" to update any files/programs that have minor upgrades and changes I would expect "upgrade" to take me from stretch to buster - major upgrades and changes, new features For whatever reason, your ...
- Thu Sep 12, 2019 8:56 pm
- Forum: Beginners
- Topic: Relay - can it be used in reverse (signal microcontroller) ?
- Replies: 14
- Views: 551
- Thu Sep 12, 2019 8:52 pm
- Forum: General discussion
- Topic: RPI 4 USB-C supply
- Replies: 37
- Views: 1265
- Thu Sep 12, 2019 4:46 pm
- Forum: General discussion
- Topic: Make diy UPS for PI3
- Replies: 19
- Views: 21292
- Thu Sep 12, 2019 12:58 pm
- Forum: General discussion
- Topic: RPI 4 USB-C supply
- Replies: 37
- Views: 1265
Re: RPI 4 USB-C supply
Does a standards compliant adaptor meet the Pi's requirements in all cases? Certainly USB 1.0 came out before such high current loads were envisioned. Not sure about USB 2.0 either. For USB 3.0 the requirement of +- 5% at the source's connector against the 5V nominal which puts a legal adaptor at 4...
- Thu Sep 12, 2019 12:26 pm
- Forum: Beginners
- Topic: Relay - can it be used in reverse (signal microcontroller) ?
- Replies: 14
- Views: 551
Re: Relay - can it be used in reverse (signal microcontroller) ?
I was hoping someone with common sense Would understand that an electrician would Be able to make safe connection to the existing Lighting circuit for him to fit the power adapter It then would be solid state no relays, In my time working as an electrician I have learnt that, unfortunately, common ...
- Thu Sep 12, 2019 12:00 am
- Forum: Troubleshooting
- Topic: Raspberry Pi 4 temperature
- Replies: 529
- Views: 132563
Re: Raspberry Pi 4 temperature
You cut and edited my response. The $100 would be viable for a pi 4B successor. Not an updated zero I clearly left your indicated price for an updated Zero. I did not misrepresent your message in my edit. A Zero at $25 is not viable. That's Pi3A territory now. And a price increase destroys the USP ...