Reddit reviews Samsung 32GB EVO Plus Class 10 Micro SDHC with Adapter 80mb/s (MB-MC32DA/AM)

I made this Pi controlled irrigation system. The goal was to make it as user friendly as possible. It is not finished yet. I had to get a working proto going as soon as possible because I moved to a different state and my parents are selling this house. Not to mention fall semester starts on Monday. I plan on working on this as much as possible on my free time and then make a guide and share my code with everyone so others can benefit from my work. If you want my current code and want to improve on it please PM me. Also, I would love it if you shared your version with me as I will implement it into my code. I want to share my best with everyone.

P.S. I did not document my code at all. I mainly hard coded all of this in the past few days since I was limited on time. I am also a noob on Kivy and this is my first big Pi project.

Edit: Below are the hardware

Landzo 7 inch touch panel - 40.88

Raspberry Pi 3 Model B - 39.99

32 GB flash - 15.69

DS3231 RTC Clock Module - 5.99

4 channel relay - 6.99

Uxcell enclosure - 9.99

M2.5 hex spacer screws - 9.98

Modified internal panel - 8.30

Total: 137.81

PS. Definitely could be cheaper. For me it sure was because I had some of the parts already available that came in a some sort of kit.

This is my parts list from Amazon, I just googled Retro Pi installation guide and used one of the top results;

CanaKit Raspberry Pi 3

Samsung 32GB EVO (storage is entirely based on your budget and how much space you think you will need)

Raspberry Pi Case (lots of options)

Wired Controller (lots of options)

Card Reader (If your PC doesn't have one already)

Add in an HDMI cable if you don't have an extra laying around.

I got the good shit, or at least as good as it gets.

I use this one https://www.amazon.com/Ampulla-Cruiser-160%C2%B0Ultra-Dashboard-G-Sensor/dp/B07BBS6MGV/ref=sr_1_3?ie=UTF8&qid=1539135959&sr=8-3&keywords=ampulla+dash+cam

Sometimes it comes with a 32GB SDCard, if not pick up a Samsung EVO SDCard as these tolerate outdoor conditions better.
I have this one:
https://www.amazon.com/Samsung-Class-Micro-Adapter-MB-MC32DA/dp/B00WR4IJBE/ref=sr_1_10?s=electronics&ie=UTF8&qid=1539138484&sr=1-10&keywords=samsung+evo+micro+sd

Files are stored in two locations on the card EVENTS and VIDEO. The EVENTS folder will contain triggered video such as excessive g-forces from a crash or if you press the lock button to save current running video segment.
The VIDEO is everything else and it loops, oldest video gets overwritten when full.

Be careful with the sensitivity settings, if you have the g-sensor set too sensitive it will overfill the EVENTS folder and will stop recording. Video in this folder is assumed to be critical and it won't overwrite them unless you format the card. This is useful in the event that a crash was so severe that you were transported to the hospital and the car was towed to an impound lot. You wouldn't want the video of the impound lot to overwrite the crash video. The sensitivity setting will depend on what type of vehicle you drive and how smooth the ride is. If it says memory is full after a few days you have it set too high. If you don't have anything important saved it is easy to reformat in the settings menu. Once the sensitivity settings are good you won't see the memory full message.

It's not the best dashcam but it is a good value. I wouldn't have considered getting one if it was more that $100. This one is almost a year old and it has so far survived an Arizona summer.

the most important thing is the SD card. I use this one: https://www.amazon.com/Samsung-Class-Micro-Adapter-MB-MC32DA/dp/B00WR4IJBE/ref=sr_1_6?s=electronics&ie=UTF8&qid=1495118025&sr=1-6&keywords=Samsung+Micro+SD+EVO%2B also a proper power supply: https://www.amazon.com/CanaKit-Raspberry-Supply-Adapter-Charger/dp/B00MARDJZ4/ref=sr_1_3?s=electronics&ie=UTF8&qid=1495118069&sr=1-3&keywords=pi+power+supply

I was using Ethernet and I tried it with the wifi and nothing changed. The Class10 Kingston may not be enough as that was what I got. Actually got this one in particular:

 

https://www.amazon.com/gp/product/B0162YQG2I

 

Which was a "Kingston Digital 32GB microSDHC Class 10 UHS-I 45MB/s Read Card" and that's where it was causing me the issues. I believe it's because it was a 45MB/s, which I thought was fast enough, but from my tests wasn't. (Not sure if others experienced different).

 

So after reading some other posts I ordered the "Samsung 32GB EVO Plus Class 10 Micro SDHC with Adapter 80mb/s"

 

https://www.amazon.com/gp/product/B00WR4IJBE

 

After getting it and installing it, it ran a lot faster and I don't experience any of the freezes I had. Used the Samsung card (two different ones) in two different PI's and have the same performance. Whereas I was doing 2x of the Kingston in the PI's and had the issues. Granted your mileage may vary, but that's just from personal experience.

You can virtually use any micro SD card whether it's HC of XC and 4, 16, 32, 128,256, (GB) etc. However anything over 32GB or any XC card requires formatting. Your safest bet is anything at 32GB or below and HC. Highly recommend a Samsung Evo 32GB. Can be purchased for about $20 here :

Samsung 32GB EVO Plus Class 10 Micro SDHC with Adapter 80mb/s (MB-MC32DA/AM) https://www.amazon.com/dp/B00WR4IJBE/ref=cm_sw_r_cp_api_CK5pybQ7QBXKT

It depends on which Samsung ones and which Sandisk ones are you talking about.

I'm looking at the prices on Amazon, a 32 GB EVO Select from Samsung is $10, while a 32 GB Sandisk Ultra is $15, and both of them claim the same "up to 80 MB/s transfer speed", but I'm sure that's just the read speed and write speeds might be better on the Sandisk, hence why it's more expensive, but I haven't checked so I'm not sure.

I haven't heard of Samsung's Evo Select line before, judging from the price I assume it's a cheaper and worse performing line than the Evo, but you can also buy a 32 GB Samsung Evo+ for $15, so Samsung microSD's aren't more expensive.

Samsung ones are one of the bests out there (you can read more about that here and here), it's also pretty cheap too.
You may also want to overclock the card controller to get the most out of the card.

Get the cabling done. There's really no substitute. Then, you'll want these...

UniFi Security Gateway router

2-4 UniFi AP AC Lites. Start with one per floor, add more if needed. They work best when ceiling mounted. If you have any devices that support more than two 5 GHz streams, you'll want at least one NanoHD for them to reach full speed.

A switch of some sort, ideally a PoE one. Ubiquiti's is the best choice, but is expensive. You could instead go with a cheaper PoE switch, or even a non-PoE one and use the PoE injectors supplied with the APs to power them. The cheapest way to have both PoE and lots of ports is to get a small PoE switch and a big non-PoE one and connect them together.

Optionally, a Raspberry Pi. This will be for running the UniFi Controller, which manages all the UniFi devices, and Pi-Hole, a whole-network adblocker. You'll need a MicroSD card for it as well.

My Pi is connected via ethernet directly to my router. Right now my Pi is dedicated to Pi Hole. I had hoped I'd be able to run a web server on it eventually so I'd like to resolve this issue.

I didn't have much time last night to play around with different settings. Just out of curiosity, what SD card do you have? This is mine. https://www.amazon.com/dp/B00WR4IJBE/ref=cm_sw_r_other_apa_Gogizb52MS741 I have a second smaller SD card I could try. I was thinking of trying Raspbian on it but maybe I'll try a different distro.

I wouldn't think it would be read/write related, but I'll see if I can figure out a way to monitor it. I don't think it's RAM/CPU related because my resource usage is low as Pi Hole is the only thing running on it. I've even tried disabling the Pi Hole's blocking functionality and saw no improvements at all.

I should have more time to do some digging/troubleshooting tonight. I'm sure others are having this issue.

Man... I wish I could be of more help.

As far as the ROM... I've had it for years so I honestly don't remember. The site I used back in the day was pretty cool but I think they removed their Nintendo ROMs a while back.

I wish I did something fancy, but I didn't. It was just a clean RPi 3 and RetroPie install (4.1) on my new Pi with a wired PS4 controller, I think I used the Rice Plugin, my SD card is the Samsung EVO Plus (I was running the ROM off the EVO plus), and ummmm I think that's it. I wish I could be more helpful.

ETA: If I can be of more help, just let me know. Goldeneye was the game I went to first as it's an all-timer, so I don't mind helping out.

I'm using a class 10, 32 gb micro sd card. https://www.amazon.com/Samsung-Class-Micro-Adapter-MB-MC32DA/dp/B00WR4IJBE

I have the A118-C with the Samsung 32GB EVO card.
Both have worked solid together. Records in 3-minute intervals and rewrites oldest footage unless it is locked/saved footage.
Definitely my choice for a cheap but quality dash cam. Around $60 for the cam and $15 for the card.

I've got Rasbian Lite booting off a Samsung Class 10 Evo Plus microSD card. From initial power-on "rainbow" to an active login prompt is about 26 seconds, 5-7 seconds of which is startup and waiting for a DHCP address for the wifi adapter. This install has minimal services running, although it surely can be optimized a bit further. Not sure how long tunerstudio would take to fire up though. Does it run under a GUI (X Windows)? 10 seconds is pretty quick. How close to that do you need to be?

I have a raspberry pi 2 but since a newer one has come out you should probably get that one

http://www.amazon.in/Raspberry-Pi-64-bit-quad-core-Cortex/dp/B01CCOXV34

You are also going to need a Micro USB power and a microSD, I personally have a 32 gig card but I think that is overkill if you if you are going to have a hard drive attached.

http://www.amazon.in/Samsung-Class-micro-speed-adapter/dp/B00WR4IJBE

http://www.amazon.in/Sony-CP-AD2-Adapter-Micro-Cable/dp/B01BHKPXE4

or

http://www.amazon.in/QuantumZERO-QZWC01-Desktop-Charger-Technology/dp/B011RP5HV8/

I use my raspberry pi as a home server, it's all in the google doc

I modified a 5V 3A power supply to match the right connector so I don't recommend doing that and instead order your Pi of choice from Aliexpress(Orange Pi example) with a power supply included.

As for SD card I got this one. It has good random read/writes and that's what is important if you want to use it for any Pi.

I run two pi zero ($5) link, connected to a chromecast ethernet adapter ($15) link.

Gives you a redundant setup for $40, trough in two Samsung 32GB EVO Plus as recommended by Jeff Geerling for $9 and you are all set.