Overclock.net › Forums › Specialty Builds › Small Form Factor Systems › [OFFICIAL] Raspberry Pi Owner's Club
New Posts  All Forums:Forum Nav:

[OFFICIAL] Raspberry Pi Owner's Club - Page 67

post #661 of 693
Well sign me up for the club!

I bought a Pi 3 from the Microsoft store on Amazon Prime day! They had a good special - for $50 you got the Pi 3 B with Noobs and Raspian and also the Win 10 IOT build (formerly embedded Windows) on a 16GB class 10 microSD card. Also the official power supply with 5.1V and 2.5 amps (important).

I downloaded/updated the latest Raspian builds and did a couple of little projects with a breadboard kit. I can play 3 different sounds with 3 push-buttons. Plenty of other little projects to do to learn electronics and Python.


I have also got another Pi 3 B coming from Amazon for $67 - this one had in addition an HDMI cable and also a case and 2 heatsinks.

I am planning to do all kinds of things:

learn more electronics: leds, all the basic circuits, battery recharging, etc.
possible audio system
learn linux
parallel computing with multiple Pis
home automation
portable/wearable uses

MicroSD cards - I bought a couple more 64GB cards, class 10. They are now officially inexpensive, and class 10 is what you want since it is your disk drive (plenty of writing done by Raspian and other OSes).

The need for heatsinks and even fans

The Pi 3 B is a much more powerful platform at the same price! 4 USB ports, full sized HDMI, onboard wireless, bluetooth, quad-core 64-bit processor makes this an amazing and practical little PC.

Testing has shown that when you stress all four CPUs you will hit 108C in the middle of the CPU! Yet the temperature reported from the command line is 30C less! You can fry your Pi 3 easily under certain scenarios! Granted the CPU can go into thermal throttling, but you can still damage it. But you also don't want your CPU throttled, do you!

Hence the need for cooling, which saddens me. But that is real life.

This video shows how when stressed the temperature is vastly different on the actual ARM chip than from what is being reported from the temperature sensor on the Pi 3 B. At lower temps around 40C the two temps are much closer, but when stressed the chip actually heats up much faster in the middle of the chip. This video asks the question, where the hell is the thermal sensor that it gives such an inacurate temp?

A fairly long, detailed vid but interesting and worth the watch -

https://www.youtube.com/watch?v=89r6xueqkUU

So, this overheating is a real issue, just like with Intel/AMD cpus when used at high levels. The difference is that for Intel/AMD chips there are proven effective cooling solutions.

Granted for many everyday uses, you may not need to be concerned since you won't be stressing the 4 cores, but when you see what is happening here, understand this is a real computer system that can get fried.
Edited by Chipfire - 7/23/16 at 1:28am
post #662 of 693
Quote:
Originally Posted by Pawelr98 View Post

After I purcahsed an cheap 16GB class10 microsd card I managed to install Raspbian normally.
Later I edited the config to allow Composite output (NOOBS adds a line that prevents usage of composite).

Over 10 year old portable Black-White 5" CRT TV (runs on 12V or batteries).


I got re-gifted one of those - have never used it! Will have to try it out redface.gif
post #663 of 693
Also recently I got my 2.5A 5V power supply from banggood.

While the sticker outside says 2.5A then the transformer inside is actually rated for 2A(sticker on transformer).

But otherwise seems fine. It has fuse, good low voltage/high voltage separation (very big gap) and looks good visually to me.

However I prefer to use 2A Samsung Tablet Charger.
The banggood charger so far only charges my powerbank.
GROM II [Gaming]
(34 items)
 
 
MIR[server]
(16 items)
 
CPUMotherboardGraphicsGraphics
i7 5820K@4.6Ghz@1.325V 2.05V input Asrock X99 Extreme 4 Sapphire R9 290X [Uber Mode] Nvidia Geforce GT240 GDDR5 512MB [PhysX + analo... 
RAMRAMRAMHard Drive
Crucial Ballistix 2400mhz 4GB 1.3V Crucial 2133@2400mhz 4GB 1.3V Crucial 2133@2400mhz 4GB 1.3V Seagate 4TB 
Hard DriveHard DriveHard DriveCooling
Samsung 840 EVO 120GB[OS] WD Red 1TB Samsung 840EVO 120GB[Arma 3] Koolance 380A [modded for LGA2011v3] 
CoolingCoolingCoolingCooling
Black Water Ultimate 123 [3x Corsair AF120 Perf... MCP655 with Alphacool HF acetal top [5th gear] Feser 10/13 UV Tubing Alphacool CKC clear 
CoolingCoolingCoolingOS
Cooltek 120mm rad [antec tri-speed] Cooltek 120mm Rad [Corsair SP120 High Performan... Alphacool GPX-A 290 [290X waterblock] Windows 7 Ulitimate 64 bit  
MonitorMonitorMonitorMonitor
LG 29EA93 [2560x1080] LG L1715S [1280x1024] Samsung SMB2030N [1600x900] DIY display on V59 controller[1366x768@1440x900] 
KeyboardPowerCaseMouse
4Tech X7 G800 Cooler Master Real Power 850w Cooler Master Haf 932 Amd Edition Microsoft Mobile Mouse 4000 
AudioAudioAudioOther
Superlux hd681 FiiO E07K SoundMax Superbeam [bundled with P5B DLX] Scythe Kaze Master Pro 6 chanell 
OtherOther
2x Sharkoon 30cm red cold cathodes 2x Revoltec 10cm UV cold cathodes 
CPUMotherboardGraphicsRAM
Athlon II X2 250 @2GHZ @1core Gigabyte 870A-USB3 Ati X600 128MB GoodRam 4gb 1333mhz 
Hard DriveHard DriveHard DriveHard Drive
Hitachi Ultrastar 1TB Samsung 40gb[OS] 6x Hitachi 2TB (RAID 6) 2x160GB RAID 1 
OSPowerOtherOther
Debian 8.2.0 x64 Pentagram Silent Force 460W Ever Eco Pro 700 CDS [UPS] Edimax EW-7318USg [Access Point] 
CPUCPUMotherboardGraphics
Xeon E5420 Xeon E5420 HP ML350 G5 motherboard HD5450 with HD5770 cooler on passive [PCIE X4] 
RAMHard DriveHard DriveHard Drive
20GB FB-DIMM@800mhz 2x40GB WD RAID0 Sata [11year old as for 2015] 2x73GB HP 15K RPM RAID0 SAS HP 10K RPM 143GB SAS 
Hard DriveHard DriveMonitorPower
HP 10K RPM 143GB SAS HP 10K RPM 143GB SAS Fujitsu W19-1 [1440x900] Delta DPS 800W 
CaseOtherOtherOther
HP ML350 G5 case Adaptec SATA II RAID 1220SA ADAPTEC SCSI-CARD 29320LP Quantum TC-L32BX LTO 3 [tape drive] 
  hide details  
Reply
GROM II [Gaming]
(34 items)
 
 
MIR[server]
(16 items)
 
CPUMotherboardGraphicsGraphics
i7 5820K@4.6Ghz@1.325V 2.05V input Asrock X99 Extreme 4 Sapphire R9 290X [Uber Mode] Nvidia Geforce GT240 GDDR5 512MB [PhysX + analo... 
RAMRAMRAMHard Drive
Crucial Ballistix 2400mhz 4GB 1.3V Crucial 2133@2400mhz 4GB 1.3V Crucial 2133@2400mhz 4GB 1.3V Seagate 4TB 
Hard DriveHard DriveHard DriveCooling
Samsung 840 EVO 120GB[OS] WD Red 1TB Samsung 840EVO 120GB[Arma 3] Koolance 380A [modded for LGA2011v3] 
CoolingCoolingCoolingCooling
Black Water Ultimate 123 [3x Corsair AF120 Perf... MCP655 with Alphacool HF acetal top [5th gear] Feser 10/13 UV Tubing Alphacool CKC clear 
CoolingCoolingCoolingOS
Cooltek 120mm rad [antec tri-speed] Cooltek 120mm Rad [Corsair SP120 High Performan... Alphacool GPX-A 290 [290X waterblock] Windows 7 Ulitimate 64 bit  
MonitorMonitorMonitorMonitor
LG 29EA93 [2560x1080] LG L1715S [1280x1024] Samsung SMB2030N [1600x900] DIY display on V59 controller[1366x768@1440x900] 
KeyboardPowerCaseMouse
4Tech X7 G800 Cooler Master Real Power 850w Cooler Master Haf 932 Amd Edition Microsoft Mobile Mouse 4000 
AudioAudioAudioOther
Superlux hd681 FiiO E07K SoundMax Superbeam [bundled with P5B DLX] Scythe Kaze Master Pro 6 chanell 
OtherOther
2x Sharkoon 30cm red cold cathodes 2x Revoltec 10cm UV cold cathodes 
CPUMotherboardGraphicsRAM
Athlon II X2 250 @2GHZ @1core Gigabyte 870A-USB3 Ati X600 128MB GoodRam 4gb 1333mhz 
Hard DriveHard DriveHard DriveHard Drive
Hitachi Ultrastar 1TB Samsung 40gb[OS] 6x Hitachi 2TB (RAID 6) 2x160GB RAID 1 
OSPowerOtherOther
Debian 8.2.0 x64 Pentagram Silent Force 460W Ever Eco Pro 700 CDS [UPS] Edimax EW-7318USg [Access Point] 
CPUCPUMotherboardGraphics
Xeon E5420 Xeon E5420 HP ML350 G5 motherboard HD5450 with HD5770 cooler on passive [PCIE X4] 
RAMHard DriveHard DriveHard Drive
20GB FB-DIMM@800mhz 2x40GB WD RAID0 Sata [11year old as for 2015] 2x73GB HP 15K RPM RAID0 SAS HP 10K RPM 143GB SAS 
Hard DriveHard DriveMonitorPower
HP 10K RPM 143GB SAS HP 10K RPM 143GB SAS Fujitsu W19-1 [1440x900] Delta DPS 800W 
CaseOtherOtherOther
HP ML350 G5 case Adaptec SATA II RAID 1220SA ADAPTEC SCSI-CARD 29320LP Quantum TC-L32BX LTO 3 [tape drive] 
  hide details  
Reply
post #664 of 693
The key for the Pi 3 is not to go over 5.1V because some of the components are not rated for voltage higher than that. The "5.1" can be taken as almost a joke, but for 2 things: voltage can drop over a longer cable (say plugged into a power strip) so 5.1 may drop to 5 or 4.9 but they are providing for that with a 5.1V power supply. For example an electric water kettle and other power-drawing kitchen appliances have very short cords, because the manufacturer knows you will get a voltage drop with longer cords! That is why new electrical code requires many many wall outlets spaced no more than 4 feet apart for appliance safety!

Secondly, they are saying "DO NOT go over 5.1V, we are giving you everything we safely can and should."


Keep in mind that your Pi may try to pull more than 2 Amps if you plug too many power drawing items into your 4 USB ports or in other scenarios.
post #665 of 693
Wow my second Pi 3 has arrived 5 days ahead of schedule. This is the deal I got

https://www.amazon.com/gp/product/B01CUMNIV8/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1


Edited by Chipfire - 7/23/16 at 2:56pm
post #666 of 693
Quote:
Originally Posted by Chipfire View Post

The key for the Pi 3 is not to go over 5.1V because some of the components are not rated for voltage higher than that. The "5.1" can be taken as almost a joke, but for 2 things: voltage can drop over a longer cable (say plugged into a power strip) so 5.1 may drop to 5 or 4.9 but they are providing for that with a 5.1V power supply. For example an electric water kettle and other power-drawing kitchen appliances have very short cords, because the manufacturer knows you will get a voltage drop with longer cords! That is why new electrical code requires many many wall outlets spaced no more than 4 feet apart for appliance safety!

Secondly, they are saying "DO NOT go over 5.1V, we are giving you everything we safely can and should."


Keep in mind that your Pi may try to pull more than 2 Amps if you plug too many power drawing items into your 4 USB ports or in other scenarios.

I did briefly run my pi 2 at 5.3V and the board did survive just about , i forgot to change the voltage on my bench supply : P , Haven't run the Pi 3 I have for a while now , Dose it say what components don't handle 5V as I though a lot are spec at 5.25V worst case


If you measured the USB lead resistance you could work out the worst case voltage drop , Its one reason remote sense is used on low voltage supplies to cover the voltage drop as the only real way round it without remote sense is larger CSA of cable for run a higher voltage at lower currents
Edited by TwirlyWhirly555 - 7/24/16 at 12:15pm
    
CPUMotherboardGraphicsHard Drive
Celecron N3150  JetWay computer NP591D4-3150 R9 380X PNY SSD 
CoolingOS
Pico ITX - Passive , R9 380X Stock dual fan coo... Win 10  
  hide details  
Reply
    
CPUMotherboardGraphicsHard Drive
Celecron N3150  JetWay computer NP591D4-3150 R9 380X PNY SSD 
CoolingOS
Pico ITX - Passive , R9 380X Stock dual fan coo... Win 10  
  hide details  
Reply
post #667 of 693
Hello

Can anyone here recommend a store where I can get circuit components etc to start playing with the GPIO? LEDs, LDR, Jumpers, breadboards etc
     
CPUMotherboardGraphicsRAM
Intel Core i7 3820 @ 4.3GHz ASUS Rampage IV Formula X79 EVGA GTX 980 Ti Hybrid @ 1.45GHz/1.9GHz Corsair Dominator 16gb @ 2.2GHz C9 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 250GB WD Caviar Blue 1tb 7200RPM WD Caviar Blue 1tb 7200RPM WD Caviar Blue 500gb 7200RPM 
CoolingOSMonitorKeyboard
120.5 Custom Loop Windows 10 Pro x64 LG D2343P-BN 3D Monitor @ 70Hz Corsair K70 (MX Brown) 
PowerCaseMouseAudio
Corsair AX Series 850w NZXT Switch 810 Black (Heavily Modded) Logitech G502 Proteus Spectrum Sennheiser HD 598 Cs 
CPUMotherboardGraphicsRAM
AMD FX-6300 @ 4.5Ghz Gigabyte 970A UD3 AMD HD8490 (OEM) @ 1.1Ghz Core/Mem Patriot Viper Xtreme 8gb @1600MHz 8-8-8-24 
Optical DriveCoolingCoolingOS
LiteOn Bluray Player Corsair Hydro Series H100i Zalman 120mm Led Fans x4 Windows 10 Pro x64 
MonitorKeyboardPowerCase
Hitachi 24" 70Hz Monitor Logitech EX110 OCZ ZT 550w Full Modular Zalman Z9 Plus 
MouseAudioOther
DELL Wireless Mouse Logitech 5.1 Sound System TP-Link TL-WN781ND Wireless Card 
  hide details  
Reply
     
CPUMotherboardGraphicsRAM
Intel Core i7 3820 @ 4.3GHz ASUS Rampage IV Formula X79 EVGA GTX 980 Ti Hybrid @ 1.45GHz/1.9GHz Corsair Dominator 16gb @ 2.2GHz C9 
Hard DriveHard DriveHard DriveHard Drive
Samsung 850 EVO 250GB WD Caviar Blue 1tb 7200RPM WD Caviar Blue 1tb 7200RPM WD Caviar Blue 500gb 7200RPM 
CoolingOSMonitorKeyboard
120.5 Custom Loop Windows 10 Pro x64 LG D2343P-BN 3D Monitor @ 70Hz Corsair K70 (MX Brown) 
PowerCaseMouseAudio
Corsair AX Series 850w NZXT Switch 810 Black (Heavily Modded) Logitech G502 Proteus Spectrum Sennheiser HD 598 Cs 
CPUMotherboardGraphicsRAM
AMD FX-6300 @ 4.5Ghz Gigabyte 970A UD3 AMD HD8490 (OEM) @ 1.1Ghz Core/Mem Patriot Viper Xtreme 8gb @1600MHz 8-8-8-24 
Optical DriveCoolingCoolingOS
LiteOn Bluray Player Corsair Hydro Series H100i Zalman 120mm Led Fans x4 Windows 10 Pro x64 
MonitorKeyboardPowerCase
Hitachi 24" 70Hz Monitor Logitech EX110 OCZ ZT 550w Full Modular Zalman Z9 Plus 
MouseAudioOther
DELL Wireless Mouse Logitech 5.1 Sound System TP-Link TL-WN781ND Wireless Card 
  hide details  
Reply
post #668 of 693
Quote:
Originally Posted by PedroC1999 View Post

Hello

Can anyone here recommend a store where I can get circuit components etc to start playing with the GPIO? LEDs, LDR, Jumpers, breadboards etc

DigiKey, Adafruit, Amazon.com, etc.
post #669 of 693
Quote:
Originally Posted by PedroC1999 View Post

Hello

Can anyone here recommend a store where I can get circuit components etc to start playing with the GPIO? LEDs, LDR, Jumpers, breadboards etc
Quote:
Originally Posted by mott555 View Post

DigiKey, Adafruit, Amazon.com, etc.
Dont forget ebay if you are not in a hurry.
post #670 of 693
Quote:
Originally Posted by PedroC1999 View Post

Hello

Can anyone here recommend a store where I can get circuit components etc to start playing with the GPIO? LEDs, LDR, Jumpers, breadboards etc

https://thepihut.com/
FinkPad
(7 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i3 2370M @ 2.4GHz Lenovo Intel HD Graphics 3000 Kingston HyperX Impact 8GB 
Hard DriveOSMonitor
SanDisk Ultra II 480GB Windows 10 Pro 64-Bit LCD 1366x768 
  hide details  
Reply
FinkPad
(7 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i3 2370M @ 2.4GHz Lenovo Intel HD Graphics 3000 Kingston HyperX Impact 8GB 
Hard DriveOSMonitor
SanDisk Ultra II 480GB Windows 10 Pro 64-Bit LCD 1366x768 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Small Form Factor Systems
Overclock.net › Forums › Specialty Builds › Small Form Factor Systems › [OFFICIAL] Raspberry Pi Owner's Club