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by spaceman5
Tue Oct 15, 2019 5:47 am
Forum: General discussion
Topic: The HDMI Connectors in RPi are Always Covered with Kapton Tape. Why?
Replies: 2
Views: 323

Re: The HDMI Connectors in RPi are Always Covered with Kapton Tape. Why?

Oh..

That's interesting to know..

Thank you

For several years I always kept wondering why it is like that.. :)
by spaceman5
Mon Oct 14, 2019 7:58 pm
Forum: General discussion
Topic: The HDMI Connectors in RPi are Always Covered with Kapton Tape. Why?
Replies: 2
Views: 323

The HDMI Connectors in RPi are Always Covered with Kapton Tape. Why?

Hi


This makes me curious for quite a while..

Why are the HDMI connectors in RPi always covered with a piece of Kapton tape?


Image


Thank you
by spaceman5
Sat Oct 12, 2019 9:36 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Looking for a USB Hub Chip, with an Enable Leg per USB Device
Replies: 1
Views: 646

Looking for a USB Hub Chip, with an Enable Leg per USB Device

Hi all


I am looking for a USB Hub Chip that has an Enable Leg per USB Device..
That way I would be able to electrically connect/disconnect a device, automatically,
instead of manually doing it everytime.


Anyone knows an appropriate chip?


Thank you
by spaceman5
Thu Oct 03, 2019 10:15 am
Forum: Advanced users
Topic: Is There Some Workaround for Mini Wireless Keyboards that Don't Have a [Del] Key?
Replies: 8
Views: 422

Re: Is There Some Workaround for Mini Wireless Keyboards that Don't Have a [Del] Key?

I replied pcmanbob to his first reply here, but that reply post that I wrote was deleted by someone.. Why was it deleted? pcmanbob, was it deleted by you? In any case, I wrote that it's the BackSpace key, not the Delete key. They have different codes, and when the BIOS expects a Delete key, it does ...
by spaceman5
Thu Oct 03, 2019 8:28 am
Forum: Advanced users
Topic: Is There Some Workaround for Mini Wireless Keyboards that Don't Have a [Del] Key?
Replies: 8
Views: 422

Is There Some Workaround for Mini Wireless Keyboards that Don't Have a [Del] Key?

Hi all If you search eBay for wireless keyboard , you will get quite an abundance of nice results. I purchased one several years ago, and after using the specific model that I have, I can say that it has 2 big disadvantages: - It does not have a [Del] key - It does not have the Function keys (F1-F12...
by spaceman5
Fri Sep 20, 2019 2:08 pm
Forum: General discussion
Topic: Connecting a 5v Fan to RPi's 5v,Gnd Pins
Replies: 5
Views: 252

Re: Connecting a 5v Fan to RPi's 5v,Gnd Pins

Oh I see. I thought you meant to imply that something is different between the 2.. (electrically) So in any case, either I connect it to the (5v,Gnd) on the 2x20 pins, or from a USB Port, my question remains.. Does anyone know If I need some protection circuit when connecting a Fan to the RPi's power?
by spaceman5
Fri Sep 20, 2019 1:11 pm
Forum: General discussion
Topic: Connecting a 5v Fan to RPi's 5v,Gnd Pins
Replies: 5
Views: 252

Re: Connecting a 5v Fan to RPi's 5v,Gnd Pins

show us the fan first (image/specs) before most of us can answer with certainty.... Option 1: https://www.ebay.com/itm/DC-5V-80mm-80x80x10mm-Brushless-Computer-Cooler-Cooling-IDE-Fan-Sleeve-Bearing/321688259661 Option 2: https://www.arctic.ac/worldwide_en/f8.html Those are both 8cmx8cm fans, but do...
by spaceman5
Fri Sep 20, 2019 11:12 am
Forum: General discussion
Topic: Connecting a 5v Fan to RPi's 5v,Gnd Pins
Replies: 5
Views: 252

Connecting a 5v Fan to RPi's 5v,Gnd Pins

Hi I would like to take a Fan that operates on 5v, and user the power coming from RPi's 5v and Gnd pins, to power it. I know that motors produce noise, and also returning voltage which can be quite spiky.. Should I add some minimal circuit between the power coming from the RPi and the Fan? If yes, w...
by spaceman5
Wed Sep 18, 2019 4:12 pm
Forum: Advanced users
Topic: Moving the microSD Card between RPi Zero W and RPi Zero
Replies: 7
Views: 255

Re: Moving the microSD Card between RPi Zero W and RPi Zero

That's another good reason to start gradually moving to Linux, where possible,
on my main computer, and not just on a hobby/maker computer..
by spaceman5
Wed Sep 18, 2019 2:14 pm
Forum: Advanced users
Topic: Moving the microSD Card between RPi Zero W and RPi Zero
Replies: 7
Views: 255

Re: Moving the microSD Card between RPi Zero W and RPi Zero

Amazing work by Raspbian OS Developers.


Compare that to windows... :shock:
by spaceman5
Wed Sep 18, 2019 1:26 pm
Forum: Advanced users
Topic: Moving the microSD Card between RPi Zero W and RPi Zero
Replies: 7
Views: 255

Re: Moving the microSD Card between RPi Zero W and RPi Zero

Thank you scott for your reply. I've used a Pi3B as a development platform before to build an application and then put the microSD card in to the Pi Zero for the real project. Wow, that's quite a switch.. much bigger than what I mentioned. The OS did not even notify about the Wi-Fi chip being missing?
by spaceman5
Wed Sep 18, 2019 12:20 pm
Forum: Advanced users
Topic: Moving the microSD Card between RPi Zero W and RPi Zero
Replies: 7
Views: 255

Moving the microSD Card between RPi Zero W and RPi Zero

Hi all The RPi Zero W and RPi Zero boards that I ordered, arrived finally. I am curious regarding one important thing: Imagine this scenario: I take a microSD card, extract a Raspbian image into it (either the Regular, or the Light edition), and put the microSD in the RPi Zero W , and then continue ...
by spaceman5
Fri Sep 13, 2019 5:25 pm
Forum: General discussion
Topic: The Power Circuit in Pi Zero vs Pi Zero W
Replies: 23
Views: 893

Re: The Power Circuit in Pi Zero vs Pi Zero W

Really nice.. Since the board is powered with 5v and not 3.3v, then this does not depend on the Serial Adapter's Voltage Converting capabilities (if any exists even).. Some have an LDO to convert from 5v to 3.3v, and some use FTDI's "3.3VOUT" leg (leg #17) which gives only 50mA, but here's it's not ...
by spaceman5
Fri Sep 13, 2019 1:20 pm
Forum: Beginners
Topic: Arduino IDE on Raspberry Pi Zero W
Replies: 40
Views: 1581

Re: Arduino IDE on Raspberry Pi Zero W

Good to know
Thank you
by spaceman5
Fri Sep 13, 2019 1:19 pm
Forum: General discussion
Topic: The Power Circuit in Pi Zero vs Pi Zero W
Replies: 23
Views: 893

Re: The Power Circuit in Pi Zero vs Pi Zero W

That FAQ page was terrific,
so much useful information, thank you very much..
by spaceman5
Fri Sep 13, 2019 11:27 am
Forum: General discussion
Topic: The Power Circuit in Pi Zero vs Pi Zero W
Replies: 23
Views: 893

Re: The Power Circuit in Pi Zero vs Pi Zero W

Wow 80mA that's so little..

My Zero and Zero W boards should arrive in 2 days,
would be interesting to do some measurements
by spaceman5
Fri Sep 13, 2019 10:25 am
Forum: General discussion
Topic: The Power Circuit in Pi Zero vs Pi Zero W
Replies: 23
Views: 893

Re: The Power Circuit in Pi Zero vs Pi Zero W

Thank you both. The inductor is used to generate 3,3V for the processor AND, on the W the WiFi circuitry, which needs ~ 40% more current than the processor alone. How much mA each consumes, from your measurements? This is 5V sourcing, which is not provided from the circuit involving L1. Good point..
by spaceman5
Fri Sep 13, 2019 10:05 am
Forum: General discussion
Topic: The Power Circuit in Pi Zero vs Pi Zero W
Replies: 23
Views: 893

Re: The Power Circuit in Pi Zero vs Pi Zero W

If the Pi was shut down and left powered up, momentarily grounding the Run pin will boot it up. You don't want to do that while its running though as it will like pushing the reset button on a PC. It will reboot on the spot without shutting down properly first. RUN is actually the SOC Reset pin. It...
by spaceman5
Fri Sep 13, 2019 9:17 am
Forum: General discussion
Topic: The Power Circuit in Pi Zero vs Pi Zero W
Replies: 23
Views: 893

Re: The Power Circuit in Pi Zero vs Pi Zero W

I see.


BTW, there are 4 holes that we can solder pin headers to, above the inductor..
What are they for?
by spaceman5
Fri Sep 13, 2019 8:44 am
Forum: General discussion
Topic: The Power Circuit in Pi Zero vs Pi Zero W
Replies: 23
Views: 893

Re: The Power Circuit in Pi Zero vs Pi Zero W

There is no explicit current limiter on the USB port on either the Zero or ZeroW. The power pins of the two micro-USB sockets are joined by PCB tracks. The limit will be set by the capability of the PSU or its cable or the PCB tracks burning up. No ordinary USB device should draw enough current to ...
by spaceman5
Fri Sep 13, 2019 8:15 am
Forum: General discussion
Topic: The Power Circuit in Pi Zero vs Pi Zero W
Replies: 23
Views: 893

Re: The Power Circuit in Pi Zero vs Pi Zero W

Hi laurent Thank you for your answer. Both boards work on 5v, Do you know what is the required Current in the Zero vs the Zero W? And also, do you know how much Current each of them can provide to a USB Device that is connected to the Host port? (is there maybe a datasheet for each Raspberry Pi?)
by spaceman5
Fri Sep 13, 2019 7:06 am
Forum: Beginners
Topic: Arduino IDE on Raspberry Pi Zero W
Replies: 40
Views: 1581

Re: Arduino IDE on Raspberry Pi Zero W

BTW
Just to verify,
does this USB problem happen in both the Zero and Zero W,
or just in one of them?
by spaceman5
Fri Sep 13, 2019 7:02 am
Forum: General discussion
Topic: The Power Circuit in Pi Zero vs Pi Zero W
Replies: 23
Views: 893

The Power Circuit in Pi Zero vs Pi Zero W

Hi all If you look at the Raspberry Pi Zero and Zero W boards, focusing on the Power Circuit on the right side, There is a slight difference.. Raspbeery Pi Zero: https://i.postimg.cc/zXJGxNHr/Power-Circuit-Z.jpg Raspbeery Pi Zero W: https://i.postimg.cc/L8W44ZC9/Power-Circuit-ZW.jpg Most of the comp...
by spaceman5
Wed Sep 11, 2019 5:20 am
Forum: Beginners
Topic: Arduino IDE on Raspberry Pi Zero W
Replies: 40
Views: 1581

Re: Arduino IDE on Raspberry Pi Zero W

I see.
OK, the workaround to it is to shutdown before connecting/disconnecting,
I will remember that :)
by spaceman5
Tue Sep 10, 2019 6:27 pm
Forum: Beginners
Topic: Arduino IDE on Raspberry Pi Zero W
Replies: 40
Views: 1581

Re: Arduino IDE on Raspberry Pi Zero W

I think someone wrote here earlier that the problem expresses when disconnecting a USB device, and now you write that it happens when connecting.. So does it happen on both? In any case, is the thread that was opened (the one you linked to) enough to raise the issue to the developers, or maybe some ...

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