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by drgeoff
Mon Mar 25, 2019 7:26 pm
Forum: Advanced users
Topic: Installing Raspbian on Sony VAIO VGN UX-280P
Replies: 5
Views: 79

Re: Installing Raspbian on Sony VAIO VGN UX-280P

You cannot install "Raspbian" on a Sony laptop.

What can be installed on a PC or Mac is not called "Raspbian".
by drgeoff
Mon Mar 25, 2019 6:56 pm
Forum: General discussion
Topic: Pi 4 questions
Replies: 13
Views: 242

Re: Pi 4 questions

The SoCs used in all RPis to date cannot address more than 1 Gbyte RAM.
by drgeoff
Mon Mar 25, 2019 6:08 pm
Forum: Advanced users
Topic: Control 12V motor from 3.3V GPIO with external 12V Power Supply
Replies: 9
Views: 130

Re: Control 12V motor from 3.3V GPIO with external 12V Power Supply

I have a Raspberry Pi 3 Model B v1.2 Maybe correct. But the board still works. Its unlikely that the onboard power supply will be able to power your pi3B from the batteries then, you may well have to power the pi via its usual USB connection at 5v. The board will work in all other respects, using t...
by drgeoff
Mon Mar 25, 2019 5:01 pm
Forum: Advanced users
Topic: Control 12V motor from 3.3V GPIO with external 12V Power Supply
Replies: 9
Views: 130

Re: Control 12V motor from 3.3V GPIO with external 12V Power Supply

Without an added heatsink the 5 volt regulator is likely to be unhappy if asked to drop 12 volts to 5 and supply the current for more recent RPis such as 3B and 3B+.
by drgeoff
Mon Mar 25, 2019 12:13 pm
Forum: Beginners
Topic: Breadboard not powering
Replies: 9
Views: 146

Re: Breadboard not powering

Hi, Yes I have double checked my wiring and it seems to be correct. I have noticed my breadboard has the - and + on the alternative sides will this cause an issue? James Does your cobbler have pins on the "top bar of the T" which would plug into the breadboard power rails? Or does it only have the ...
by drgeoff
Mon Mar 25, 2019 11:57 am
Forum: Beginners
Topic: recording audio and sending it as an e-mail.
Replies: 2
Views: 47

Re: recording audio and sending it as an e-mail.

And if you are not already aware, RPis have no analogue audio input.
by drgeoff
Mon Mar 25, 2019 11:49 am
Forum: Beginners
Topic: Breadboard not powering
Replies: 9
Views: 146

Re: Breadboard not powering

The photos are too small for me to clearly make out what you are doing. It looks like the cobbler is not in the correct position, it seems to have been placed several rows beyond the end of the breadboard. The cobbler is connected exactly as the freenove tutorial instructed. The top 3v3 and 5V pins...
by drgeoff
Mon Mar 25, 2019 8:13 am
Forum: Beginners
Topic: Breadboard not powering
Replies: 9
Views: 146

Re: BreadbNooard not powering

No you don't need that. Simply insert jumper wires to connect the 3.3 volt and ground pins of the cobbler to the power rails of the breadboard.
by drgeoff
Sat Mar 23, 2019 8:16 pm
Forum: Graphics, sound and multimedia
Topic: Suggestions for multiple amplified audio outputs
Replies: 3
Views: 77

Re: Suggestions for multiple amplified audio outputs

Ah yes, good point - I'd forgotten the internal audio had seen some quality improvement. Not sure if it can drive the loudspeakers directly (I think they're 8Ω, something like 2" paper cone), but worth a try! No RPi can drive a loudspeaker loud enough to be heard behind a wet newspaper. (I don't kn...
by drgeoff
Sat Mar 23, 2019 9:55 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: POE on B+ pinout confusion
Replies: 2
Views: 98

Re: POE on B+ pinout confusion

There is no POE header on a B+.

If you mean a 3B+, write that and reduce confusion.
by drgeoff
Sat Mar 23, 2019 8:34 am
Forum: Wanted
Topic: Cheapest Pi For My Purpose? (In the UK.)
Replies: 13
Views: 319

Re: Cheapest Pi For My Purpose? (In the UK.)

If the videos are H.264 there will be hardware decode by the GPU. All models of RPi have the same GPU.
by drgeoff
Fri Mar 22, 2019 11:12 pm
Forum: Other
Topic: Porting tizen 3.0 on a raspberry pi 3
Replies: 3
Views: 90

Re: Porting tizen 3.0 on a raspberry pi 3

There is no Raspberry Pi 3. There are 3B, 3B+ and 3A+. The web page you reference was last updated before the 3B+ and 3A+ were released.
by drgeoff
Fri Mar 22, 2019 11:05 pm
Forum: Beginners
Topic: Best way to splice multiple wires/components into a single circuit
Replies: 12
Views: 255

Re: Best way to splice multiple wires/components into a single circuit

mahjongg wrote:
Fri Mar 22, 2019 8:04 pm
.. will emit massive amounts of electromechanical radiation
Surely electromagnetic radiation not electromechanical?
by drgeoff
Thu Mar 21, 2019 1:19 pm
Forum: Beginners
Topic: Sinusoidallly Modulated Signal Output
Replies: 4
Views: 101

Re: Sinusoidallly Modulated Signal Output

RPis other then the Zero range have an analogue audio output from the 3.5 mm socket. You will need an amplifier between that and your speaker.
by drgeoff
Tue Mar 19, 2019 7:03 pm
Forum: Beginners
Topic: Can I use pi zero fpc connection for smth other than camera?
Replies: 2
Views: 80

Re: Can I use pi zero fpc connection for smth other than camera?

No.

The camera connector can only be used with RPi branded and compatible cameras. The signals on it have little in common with those on the GPIO header.
by drgeoff
Tue Mar 19, 2019 7:01 pm
Forum: General discussion
Topic: Pi Zero camera case, for use in a car
Replies: 6
Views: 170

Re: Pi Zero camera case, for use in a car

pi4b wrote:
Tue Mar 19, 2019 6:20 pm
I expect it would be wiser to use a power bank e.g. from Anker that is being charged via that outlet & USB cable while it is being discharged by the Pi Zero W + camera.
For future reference, be advised that very few powerbanks are capable of being charged and supplying power simultaneously.
by drgeoff
Tue Mar 19, 2019 10:58 am
Forum: Troubleshooting
Topic: Replace Broken Component (capacitor, transistor, resistor?)
Replies: 10
Views: 232

Re: Replace Broken Component (capacitor, transistor, resistor?)

HawaiianPi wrote:
Mon Mar 18, 2019 9:49 pm
Depending on the soldering skill of your helper, you could substitute the more commonly available epoxy dipped version.

Which looks similar to this:
C047U10T.jpg
Note that this type (tantalum) is polarity sensitive and must be connected the correct way round.
by drgeoff
Sun Mar 17, 2019 4:47 pm
Forum: Advanced users
Topic: Connecting Mobile Phone to 3 BT Speakers, for multi-room play
Replies: 1
Views: 55

Re: Connecting Mobile Phone to 3 BT Speakers, for multi-room play

TigerSamm wrote:
Sun Mar 17, 2019 4:16 pm
I don't mind connecting the Mobile Phone to the Raspberry Pi via AUX cord if that makes anything easier.
RPI Bluetooth can only connect to 1 BT speaker at a time.

No RPI has audio input suitable for connecting via an AUX cord.
by drgeoff
Sun Mar 17, 2019 4:40 pm
Forum: Troubleshooting
Topic: SSH Login Outside LAN: Port 22 Won't Open
Replies: 26
Views: 349

Re: SSH Login Outside LAN: Port 22 Won't Open

Look like the OP is confused about port forwarding. His test result "ssh: connect to host 36.73.72.157 port 23456: Connection timed out" indicates he wants to use port 23456 over the WAN but his router page shows port 22 (the external) from the WAN being forwarded to 23456 of his RPi on the LAN. As ...
by drgeoff
Sun Mar 17, 2019 4:30 pm
Forum: Beginners
Topic: Input Relays
Replies: 21
Views: 406

Re: Input Relays

boyoh wrote:
Sun Mar 17, 2019 4:01 pm
Using a 5v+ power adapter , you will be using full wave rectified
Smooth filtered 5vdc, all component parameters worked out for you
BoyOh
Unnecessarily expensive and possibly bulky given that the OP wants 4.
by drgeoff
Sat Mar 16, 2019 6:08 pm
Forum: Beginners
Topic: Input Relays
Replies: 21
Views: 406

Re: Input Relays

drgeoff: Can you point me towards some 110v optocouplers then? My google-fu is failing me and I'm not finding any rated for that input. I did find this one but it's rated for 220v and in don't know that it will work on 110v No, I have not suggested 110 volt optocouplers. You don't appear to underst...
by drgeoff
Sat Mar 16, 2019 5:42 pm
Forum: Beginners
Topic: Input Relays
Replies: 21
Views: 406

Re: Input Relays

drgeoff: Generally optocouplers are low voltage and DC. I need 110vac on one end and 3.3/5vdc on the other. Also relays are by nature isolators for stepping up/down voltage or changing types of power (ac/dc) All I'm really looking for is some recommendations on RELAYS, please? 110vac coil designed ...
by drgeoff
Sat Mar 16, 2019 5:06 pm
Forum: Beginners
Topic: Input Relays
Replies: 21
Views: 406

Re: Input Relays

I suggest optocouplers. For each, use a capacitor as the major part of the voltage dropper.
by drgeoff
Sat Mar 16, 2019 10:03 am
Forum: Troubleshooting
Topic: Backup Restore Rpi dmg via terminal on mac
Replies: 14
Views: 246

Re: Backup Restore Rpi dmg via terminal on mac

It did not boot. So I proceeded to make another copy and when I inserted the original hassio microsd I noticed that the Mac simply doesn't recognize whatever format hassio does to the microsd because I got the same popup dating it didn't recognize it. I went ahead and made a cdr of it and saved it ...

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