Olimex Support Forum
1
A64 / Re: USB and eMMC not working ...
Last post by fivuf - Today at 12:08:50 amQuote from: JohnS on April 06, 2020, 11:00:43 pmYou've reported this on the Armbian site/ML? (Maybe also linux-sunxi?)
ok I posted here https://forum.armbian.com/topic/13639-olimex-lime-a64-no-usb-and-no-emmc-detected/
I had time to compile the olimex build and i have also the problem.
The result of the build is
Armbian_5.92_Olinuxino-a64_Debian_buster_next_4.19.63.img
instead of the image provided
Armbian_5.92.1_Olinuxino-a64_Debian_buster_next_5.2.5.img
2
ARDUINO / Re: Best book for complete beg...
Last post by vtsvetkov - April 06, 2020, 11:18:42 pmTL;DR:
Get some cheap board, that does not require an external programmer - Arduino is fine.
Books?
Arduino For Dummies - yes, let's face it
K&R C - cool book, the meat of programming;
MISRA C - software development guidelines for the C programming language, even at a beginning stage it is good to get used to good practices
Avoid anything that mentions "21 days" or "7 days"...
##########
Here's my 2 cents on this topic, and it can be applied anywhere:
Start with the shortest book/tutorial first! Books? Books are nice and well structured, but you feed from results. You may have seen this example quite often, it is very frequently used: when you learn to play some instrument, you do not start learning music theory (unless your parents forced you at the ripe old age of 8 to play the oboe) or get bogged down with complex time measures and notes... no, you go ahead and try to play the song as fast as possible, watching youtube tutorials and struggling on, until you can play it for your mates and bitterly disappoint them.
OK back to microelectronics: get an Arduino board, check out some ESP32s, run a blinking led example and keep on increasing the complexity little by little. You want to keep complexity in in the center between 'ok this is too easy I'm bored' and 'wow so hard, I'm never going to reach this level of mastery'.
Books for beginners? Some may claim that they are, but there are none, good books have quality information, and quality information seems 'dry and boring' to beginners. Just dive head first, use google a lot and keep practicing.
Pro tip: after some time - periodically keep re-reading whatever you have read before.
Another tip: have a 'pet project' that you care about and constantly tinker and improve.
Cheers.
Get some cheap board, that does not require an external programmer - Arduino is fine.
Books?
Arduino For Dummies - yes, let's face it
K&R C - cool book, the meat of programming;
MISRA C - software development guidelines for the C programming language, even at a beginning stage it is good to get used to good practices
Avoid anything that mentions "21 days" or "7 days"...
##########
Here's my 2 cents on this topic, and it can be applied anywhere:
Start with the shortest book/tutorial first! Books? Books are nice and well structured, but you feed from results. You may have seen this example quite often, it is very frequently used: when you learn to play some instrument, you do not start learning music theory (unless your parents forced you at the ripe old age of 8 to play the oboe) or get bogged down with complex time measures and notes... no, you go ahead and try to play the song as fast as possible, watching youtube tutorials and struggling on, until you can play it for your mates and bitterly disappoint them.
OK back to microelectronics: get an Arduino board, check out some ESP32s, run a blinking led example and keep on increasing the complexity little by little. You want to keep complexity in in the center between 'ok this is too easy I'm bored' and 'wow so hard, I'm never going to reach this level of mastery'.
Books for beginners? Some may claim that they are, but there are none, good books have quality information, and quality information seems 'dry and boring' to beginners. Just dive head first, use google a lot and keep practicing.
Pro tip: after some time - periodically keep re-reading whatever you have read before.
Another tip: have a 'pet project' that you care about and constantly tinker and improve.
Cheers.
3
ARDUINO / Re: Best book for complete beg...
Last post by JohnS - April 06, 2020, 11:01:42 pmElektor may have such book(s).
John
John
4
A64 / Re: USB and eMMC not working ...
Last post by JohnS - April 06, 2020, 11:00:43 pmYou've reported this on the Armbian site/ML? (Maybe also linux-sunxi?)
(I'm guessing they won't fix it unless they know it's broken.)
John
(I'm guessing they won't fix it unless they know it's broken.)
John
5
ARDUINO / Best book for complete beginne...
Last post by ozunasawai4 - April 06, 2020, 07:12:02 pmIm an electrical engineering student so i have some knowledge on electrical components and how they work, I know some C++ coding and how loops work.
I also have downloaded Hackster's arduino course but I also want to study it on a book as well.
Or what do you think is better and from where to start?
I also have downloaded Hackster's arduino course but I also want to study it on a book as well.
Or what do you think is better and from where to start?
6
A64 / Re: USB and eMMC not working ...
Last post by fivuf - April 06, 2020, 03:50:23 pmHello,
I'm getting the same problem, no usb and no emmc working.
I'm using the latest armbian dev build.
Armbian_20.05.0-trunk_Lime-a64_buster_dev_5.5.15
No change to the config of kernel, choosing lime-a64 and no desktop when asked to by ./compile.sh
The only difference i see with martinayotte is that we're using the A64-OLinuXino-2Ge8G-IND while martinayotte is using the 1GB-W version.
Edit:
When compiling, the only choice for lime-a64 has the description: A64 quad core 1GB RAM SoC GBE eMMC Wi-Fi/BT.
That doesn't correspond to the A64-OLinuXino-2Ge8G-IND.
I'm getting the same problem, no usb and no emmc working.
I'm using the latest armbian dev build.
Armbian_20.05.0-trunk_Lime-a64_buster_dev_5.5.15
No change to the config of kernel, choosing lime-a64 and no desktop when asked to by ./compile.sh
The only difference i see with martinayotte is that we're using the A64-OLinuXino-2Ge8G-IND while martinayotte is using the 1GB-W version.
Edit:
When compiling, the only choice for lime-a64 has the description: A64 quad core 1GB RAM SoC GBE eMMC Wi-Fi/BT.
That doesn't correspond to the A64-OLinuXino-2Ge8G-IND.
7
A10 / Re: Any feedback about OLIMEX ...
Last post by LubOlimex - April 06, 2020, 02:40:05 pmWe've had quite of these boards used for customer and commercial projects. For example, it is not secret that A20-OLinuXino-LIME2 boards were used in some models of Ultimaker printers. In any case I always recommend customers to evaluate a couple of boards before making any big commitment to our products.
8
TERES DIY Laptop / Re: MicroSD Issues
Last post by baffo32 - April 06, 2020, 02:08:07 pmWhile making the video clear I actually found that what I have to do is press the microsd card even farther in, using my fingernail, and then it clicks in and works fine.
Thanks so much.
Thanks so much.
9
A10 / Any feedback about OLIMEX OLin...
Last post by arunpandit - April 06, 2020, 01:57:38 pmHi guys,
First post & sorry for my english...
I'm looking for any feeback about OLIMEX board (A20-OLinuXino-LIME) with the OLIMEX 7 inch screen. I'm cofounder of a french startup and we want to implement this board in our product (about 200 units/year).
Is this board/screen good for this king of use ? (lifetime & reliability/stability)
Have you any exemples of similar use/aplication (production use) ?
Thank you for your answers,
First post & sorry for my english...
I'm looking for any feeback about OLIMEX board (A20-OLinuXino-LIME) with the OLIMEX 7 inch screen. I'm cofounder of a french startup and we want to implement this board in our product (about 200 units/year).
Is this board/screen good for this king of use ? (lifetime & reliability/stability)
Have you any exemples of similar use/aplication (production use) ?
Thank you for your answers,
10
AM3352 / Re: am3352-debian-3_12_FS_rele...
Last post by kurtmarsh - April 06, 2020, 12:12:22 pmQuote from: LubOlimex on June 01, 2017, 12:52:55 pmSeems to work fine here. Try with another torrent client software.This has resolved my problem. Many thanks!