Go to advanced search

by Flagbit
Thu Mar 31, 2016 9:41 am
Forum: General discussion
Topic: usb boot on pi3
Replies: 36
Views: 34340

Re: usb boot on pi3

Hi,

are there some news?

When could we probably be able to boot from USB only?

Kind Regards
Flagbit
by Flagbit
Wed Mar 30, 2016 7:36 pm
Forum: General discussion
Topic: Expecting Too Much
Replies: 42
Views: 19900

Re: Expecting Too Much

Thank you for the information JimmyN. Starting up from a USB stick is faster? Yes, afaik SD-Card is only up to 21 MB/s, USB2.0 (at least at PI3) up to 40 MB/s. I have a cheap USB3.0 USB stick with 35 MB/s, 12 MB/s read, write on the PI3. Here is a how-to (first page last post): https://www.raspberry...
by Flagbit
Wed Mar 30, 2016 2:52 pm
Forum: General discussion
Topic: Expecting Too Much
Replies: 42
Views: 19900

Re: Expecting Too Much

. Now I overclocked (arm_freq=1000) and everything seems to run faster, but the freezes stay there, I have the impression it freezes a little longer now, but overal speed is better.
Do you use a class10 SD-card?
by Flagbit
Wed Mar 30, 2016 2:06 pm
Forum: General discussion
Topic: Expecting Too Much
Replies: 42
Views: 19900

Re: Expecting Too Much

If it does not feel snappier with this, which makes it not to switch to a lower frequency when there is no load, you can also remove it. In my case the Pi started quicker and was more snappy. If you look here fore the word Overclocking, you find all Information about how to be able to use it at conf...
by Flagbit
Wed Mar 30, 2016 9:39 am
Forum: General discussion
Topic: Expecting Too Much
Replies: 42
Views: 19900

Re: Expecting Too Much

If you force the CPU to be all the time at the higher frequency with force_turbo=1 in the config.txt, what signs/s do you get when benchmarking with the command openssl speed rsa4096 -multi $(grep -c ^processor /proc/cpuinfo) ? (With the result one can compare if the RPi is running with the normal s...
by Flagbit
Sun Mar 27, 2016 7:33 pm
Forum: General discussion
Topic: Why's my PI3 made in China?
Replies: 12
Views: 11077

Re: Why's my PI3 made in China?

Would a customer buy a 35 euro device if it is 5 euro more expensive, same quality? Only because it says "made (by machines) in your country"? (E.g. the fair phone has other reasons to buy it) Afair taxes in China are cheaper if the chips leave the country assembled and not loose. So there should be...
by Flagbit
Fri Mar 25, 2016 9:38 am
Forum: General discussion
Topic: My 2 Cents: Coin Heatsink :)_
Replies: 34
Views: 14592

Re: My 2 Cents: Coin Heatsink :)_

The 10, 20 and 50 euro cents seem to be very good in heat conduction. I will give one a try. Its composition is 89% copper, 5% aluminium, 5% zinc, and 1% tin.[3] https://en.wikipedia.org/wiki/Nordic_gold ed.: Maybe someone else will do, the loctite is tighter then I thought :) I will stick to my 2 c...
by Flagbit
Fri Mar 25, 2016 1:12 am
Forum: General discussion
Topic: My 2 Cents: Coin Heatsink :)_
Replies: 34
Views: 14592

Re: My 2 Cents: Coin Heatsink :)_

Hi, yes, it lowers only temperature peaks e.g. at a overclocked SOC. For daily use as a snappy office computer, it should be enough (as far as I tested until now). Other bigger coins made of copper or aluminium should be much better. Also it should improve most when used with a proper thermal glue/t...
by Flagbit
Thu Mar 24, 2016 5:02 pm
Forum: General discussion
Topic: My 2 Cents: Coin Heatsink :)_
Replies: 34
Views: 14592

Re: My 2 Cents: Coin Heatsink :)_

Coincidence ?
Would one of the small candles in a aluminium cup work good, because of the melting point of wax being around 46-68°C?
by Flagbit
Wed Mar 23, 2016 9:54 pm
Forum: General discussion
Topic: My 2 Cents: Coin Heatsink :)_
Replies: 34
Views: 14592

Re: My 2 Cents: Coin Heatsink for Overclocking :)

@dom Only placing the 2 Cents on the chip without glueing, it lowered peak temperature from 75°C to 70°C. So also 5°C.. Wikipedia says: One pound United Kingdom Value 1 pound sterling Mass 9.5 g Diameter 22.5 mm Thickness 3.15 mm Edge Milled, with incuse lettering Composition Nickel-brass (70% Cu, 2...
by Flagbit
Wed Mar 23, 2016 6:16 pm
Forum: General discussion
Topic: My 2 Cents: Coin Heatsink :)_
Replies: 34
Views: 14592

Re: My 2 Cents: Coin Heatsink :)

The best materials for heat conduction are (first is best): silver copper gold aluminium ... Most heatsinks are made of aluminium because its cheaper, some of copper or with a copper core for better heat transfer. edited.: Afaik they can dissipate the heat through: - radiation (as sitting next to a ...
by Flagbit
Wed Mar 23, 2016 3:45 pm
Forum: General discussion
Topic: My 2 Cents: Coin Heatsink :)_
Replies: 34
Views: 14592

My 2 Cents: Coin Heatsink :)_

Lowers Temperature Peaks at Overclocked SOC. IMG_20160323_163313small.jpg e.g. from 75°C to 62°C at a short openssl speed test @1275Mhz e.g. from ??°C to 65°C at a short openssl speed test @1350Mhz (overvolted) (Glued with a loctite glue normaly used for screws) edit: A 10, 20 or 50 eurocent coin a...

Go to advanced search