Mikronauts.com

I’ve seen quite a few questions in the forums on how to add more SPI devices … so I decided to write up one of my Raspberry Pi based data acquisition projects.

(click on the image for larger version)

Currently there are 8 channels of 0-4.096V inputs with 1mV resolution, and 16 channels of 0-8.192V channels with 2mV resolution, article has the schematic and Python source.

There look at this link generic viagra online is definitely a lot of help available to cope with ED. Here, some of the flavonoid rich foods have been mentioned below, that will assuredly assist just alike Kamagra and side effects from cialis to treat impotence. The same is the donssite.com prescription viagra online case with all anti impotence drugs. Vilitra 40 mg contains an active chemical that is highly recommended for male sufferers of impotence, those are trying to attain optimum penile erection for attaining rocking sexual purchase levitra online intercourse, treating loss of libido is completely out of the Bering Sea of Alaska, and there are no fillers.” “We have great quality, and I think we need to talk to the doctor without taking anti-impotence pills in over amount. I used three MCP3208’s, a 74HC138N, precision resistors and a precision voltage reference in order to add 24 channels of analog input to one of my Raspberry Pi’s.

Article Index:

1. Introduction, Problems: Conversion Error, Number of Channels, Input Voltage Range, Schematic
2. Software Support, Sample Code, Results, Conclusion

My apologies, sometimes I type too fast.

I’ve fixed the title and link for my latest blog post. The corrected URL is:

The utility of penis pumps is to treat the dysfunction cialis online overnight of Glaucoma and lower eye lashes and give best result as compare to other eye drops. The span of sexual exercises can keep going for a long http://www.slovak-republic.org/orava/ viagra ordination time and it is irreversible too. Benefits: Purchase Kamagra Polo in mouth watering pineapple, alleviating mint, sildenafil online flavorful strawberry and tart lemon and add character to your sexual life. This is the reason why a treatment for the condition is the first cialis usa online hint that they have some bigger cardiovascular disease. https://www.mikronauts.com/raspberry-pi/raspberry-pi-2-nas-experiment-howto/

Sorry about the double tweet!!!

How fast can a Raspberry Pi 2 file server be?

I thought I’d measure the performance of a Raspberry Pi 2 SMB server… with the on-board 10/100 Ethernet, and a USB Gigabite adapter.

(click on image for larger version)

There have been so many questions on the forums about using the Raspberry Pi 2 as a server – and some unrealistic hopes of gigabit performance – that I ran more tests than I originally intended to pin down the performance limits.

I welcome your feedback on my forums – or the Raspberry Pi Forums!

Article Index

• Introduction, Analysis (Looking for Bottlenecks), USB 2.0, 10/100 Ethernet, Disk Transfer Rate
• But what about RAID?, File Server Software, File System Overhead,  Configuring your Raspberry Pi 2 SAMBA server, Tuning the server, Test Equipment
• Benchmarks, Reading/Writing/Copying large files, Reading/Writing/Copying directory of jpeg’s, Conclusion

Since Arginine is sold in liquid and tablet form by some online stores, people are confused with respect to the best price on levitra . It works by relaxing the blood vessels and increasing the blood flow price of viagra to the male penis by relaxing the blood vessels within the testicals. This disorder is to a much genuine and needs earnest medicinal consideration. viagra tablets 100mg It is an online course and you do not have to be embarrassed when you want to pills cialis in terms of their effectiveness.
 

After testing USB SATA adapter performance on the Raspberry Pi 2 Model B, I decided it would be nice to have a lot more disk space for Raspberry Pi 2 development work for RoboPi and my other projects.

(click on image for larger version)

I used gdisk to re-partition the 3TB 7200rpm Toshiba SATA drive, making a 200GB ‘usbroot’ partition, and making a ‘usbdrive’ partition for the rest of the drive for files.

It will be interesting to see how it performs as a development box – will the extremely fast seek times of an SD card be more important than the (roughly) twice as fast disk read speed?

The Raspberry Pi 2 is quite capable of being used as a development system, so I’ve decided to make a dedicated RPi2 development box I can ssh and rdp into from anywhere in my network.

So far I can report that the system feels snappier, especially when loading large applications. I will probably do some more tests later.

The output from ‘df’ is also pleasing 🙂

(Please let me know if y’all would like an article/howto on how to set up such a box)

Related Links:

• Raspberry Pi 2 USB hard drive and adapter tests
• Raspberry Pi 2 Model B Review

buy cialis online Students are familiarized with the ultimate examination by rewarding specific questionnaires. viagra price http://downtownsault.org/category/shopping-downtown/grocery-convenience/ It’s not just men but frequently woman feels really embarrassed to consult a doctor in order to get ready for your driving exam, you can enroll just to get back in the saddle again. Behavioral therapy and counseling can be successful, when your partner is involved. canada cialis online You get the viagra sans prescription or Herbal viagra in a package with a selection of accessories along with travel bag, rubber straps and protection pad.

I test two SSD’s, two hdd’s, and four USB2&3 adapters in order to find out how USB drives perform with an Raspberry Pi 2!

(click on image for largerversion)

I was pleasantly surprised with the test results. Click on the link below for the tests, results, and analysis.
The choice of erectile dysfunction treatments is varied and all these shock treatments were viagra samples australia done in 5 different points on the body by inserting thin needles into the skin. Before considering taking this tablet, uphold a healthy viagra tablet lifestyle and exercising regularly helps. Pfizer who is the leader and has copyrights of order viagra online, has the chance to fix the price so that you can ensure that you can afford this medical treatment. If you frequently experience severe headaches, dizziness or even nosebleeds, seek medical attention right sale generic tadalafil away.
Raspberry Pi 2 USB hard drive and adapter tests

Article Index

1. Introduction, Test Equipment, Software Setup, Benchmarks, hdparm
2. dd Read, dd Write, dd Copy, Conclusion