More ARM goodies

July 3, 2013 jeremyandroid, arm, audio, beagleboard, beaglebone, black, board, cape, cubieboard, dev, development, embedded, geekbuying, guitarix, jack, jackd, linux, mk808, pcduino, pi, raspberry, raspberrypi, rk3066, rockchip, rpi, stick, tv, tweakers.netLeave a comment

Bought another Android TV stick based on the RK3066 SoC, the MK808 which is as far as I’ve understood kind of the default board to hack on.

MK808 Android TV stick

Also bought a BeagleBone Black development board. Why? Because apparently JACK runs well on it, also with USB interfaces (no need for the ALSA softmode option!) so I assume the USB implementation is better than those of the Raspberry Pi and the RK3066 based board I currently own. And I could get it cheaper over here in The Netherlands than other viable alternatives like the pcDuino or Cubieboard, also because of a coupon code I found on tweakers.net so I got a price reduction of a few Euros. Another reason why I bought it are the so-called capes that are available for this board. These capes are basically add-on boards and the cape that has my most attention is the audio cape. I’m thinking about buying that specific cape, solder two Neutriks on the audio in and out and turn it into the easiest DIY guitar effect box ever. Of course with guitarix loaded on it, the devs have done an incredible amount of work recently to get guitarix running flawlessly and painlessly on ARM dev boards like the BeagleBone Black.

BeagleBone Black

BeagleBone Audio Cape

Good buy, or not?

July 3, 2013 jeremyaluminium, aluminum, dealextreme, dx, metal, pick, picks, plectrum, plectrumsLeave a comment

My latest DealExtreme order also contained a bunch of these: 0.3mm Metal Guitar Picks (24-Piece)
They we’re only a couple of bucks so I thought why not, let’s give it a shot. And I actually like them. These picks add a slight bit of high to my guitar sound and they give me some more control. But they’re metal picks so they’re pretty ruthless. Ruthless yes. Yesterday during rehearsal I spent more time replacing strings than actually rehearsing. One string after the other simply snapped. So with respect to string wear these picks are apparently not such a good buy.

Bricking the UG802 Android TV stick

June 20, 2013 jeremyandroid, audio, custom, finless, irq, jack, jack1, jackd, kernel, linux, pi, raspberry, raspberrypi, rk3066, rom, rpi, stick, tv, ug802, usbLeave a comment

Pulled out my soldering iron, soldered a reset button and a switch to boot into recovery on the PCB and connected my UG802 clone/revision to my TV. Nothing. lsusb. Crap, it boots in flash mode. Let’s try reflashing the whole bloody thing. Well that works so the NAND is not defective or anything. Reboot. Nothing, lsusb still reports the device is in flash mode. So I removed all my soldering efforts which I really regretted because it was quite nicely done given my poor soldering skills and tried again. Still nothing. Arrrggghhhh. Enjoyed a cold Warsteiner and let it rest.

Today I brought the device with me to the office. Hooked it up to a Windows machine, ran the ROM flash tool from Finless’ custom ROM package for this device and powered it up. I was greeted with the most ugly Android boot animation I had ever seen. But at least the device works again so thanks Finless!

So now I can move on again. I had Jack1 running on it so it should be possible to turn this device into a very cheap, yet powerful alternative to do real-time, low-latency audio. Compared to the Raspberry Pi JACK already consumed way less CPU (12% on the RPi compared to 2% on the RK3066 device with the same JACK settings) and I noticed the device has some more IRQ’s so if I could get all of those threaded that should give me some more flexibility to get everything working in a more stable way. I did have to disable WiFi otherwise the whole USB stack crashed after starting JACK. Also tried with an external WiFi dongle, same issue. I can even generate xruns when pressing keys on an attached keyboard. So it’d be really nice if I had serial console access to this thing. But I’ll figure that out too. And maybe the USB part of the kernel can be tweaked to improve things on the USB level.

New notebook: minor issues

June 17, 2013 jeremybto, card, cardreader, clevo, dkms, horus, notebook, reader, realtek, system76, udisksLeave a comment

“My keyboard seems a bit loose on the lower left side, is that something that could be fixed?”
“We’ll take a look at it, should be no problem.”

So I paid a visit to BTO again, had to be at a Horus meeting anyway, and within 15 minutes the tech guy returned with my notebook from the workshop.

“Could you try it out?”
“It’s perfect, no loose spots anymore, what did you do?”
“Oh, I just replaced the keyboard with a new one.”

He just replaced the keyboard with a new one. Now that’s what I call service. With any mainstream brand you will have to do without your notebook for at least 3 weeks and in the worst case they’ll start nagging the faulty keyboard is not a warranty case. Not at BTO. Fixed within 15 minutes, ready while you wait.

At the Horus meeting one of the items on the agenda was “Jeremy’s new monster notebook”. Did I really have to show off my notebook? Yes I had and soon 2 or 3 people were like I’m going to get a BTO too and told me I should become a sales rep. More on the Horus meeting in a separate blog post.

I did find out the card reader doesn’t work. But fortunately System76 apparently uses Clevo parts too so after installing their dkms package the reader immediately started working as the udisks package already contains the needed udev rule for this card reader.

Hacking the UG802 Android TV stick

June 16, 2013 jeremyandroid, galland, howto, linux, manual, mk808, rk3066, rk3188, rockchip, stick, tutorial, tv, ug8024 Comments

Lucky me. Brought the Android TV stick with me to work after I got it in the mail. Showed it to my boss and he immediately ordered one too, not a UG802 though but a RK3188 based device. The RK3188 is a quad core ARM CPU while the UG802 comes with a RK3066 dual core CPU. The goal is to hack this RK3188 based device to see if it can be used for one of the projects we’re working on. Only very recently (about two weeks ago) the kernel source has been released and people managed to run Linux on it just a few days ago. Can’t wait to hack it. During working hours. Awesome.

Unlucky me. Apparently the TV stick I purchased is some kind of UG802 revision or clone. Very confusing. But I can boot Linux on it as it’s a RK3066 based device so I’m ok. I think I’ll order another TV stick but then one with better community support, like the MK808.

Unlike the RK3188 based devices the RK3066 based devices have been available a while longer so there is quite some useful information available on how to get Linux running on it. First thing is to get a Linux kernel on it that allows you to boot into a Linux rootfs that resides on a MicroSD card. For the Linux rootfs I’ve chosen to use Debian Wheezy. For the kernel I used Galland’s concise yet effective howto. All the details on how I set up the TV stick in order to boot it with Linux can be found on the Installing Linux on a RK3066 based device page.

More DX goodies!

June 11, 2013 jeremy400, a9, android, beitai, cortex, cortexa9, dealextreme, dx, hdmi, mali, mali400, mini, pc, picuntu, rk3066, rockchip, stick, tv3 Comments

Just in, a Beitai SNT-D06 mini PC which set me back a whopping €33,-! What do you get for this price:

Chipset	Rockchip RK3066
CPU	CORTEX-A9
Processor Frequency	1.2GHz
GPU	Mali 400
Memory	DDR3 1GB
Storage	4GB
Wi-Fi	IEEE 802.11b/g/n
Video Output	HDMI
Audio Output	HDMI
Other Interface	1 x USB host, 1 x Mini USB port, 1 x TF card slot

Let’s see if we can get Picuntu running on it and turn this baby into a Raspberry Pi killer.

Edit: I could’ve just bought an UG802 but at least I got it with an EU adapter. Other than that the device seems exactly the same. Debian Wheezy runs like a charm on it. More on that later.

New notebook: BTO P•BOOK 17CL45-GT650 i7 QUAD

May 31, 2013August 29, 2015 jeremy12.04, 17cl45, audio, bto, clevo, express, expresscard, firewire, gt650m, laptop, linux, lts, lubuntu, notebook, nvidia, optimus, pangolin, pci, precise, ubuntu, w170er2 Comments

Yay, got a new notebook, a BTO P•BOOK 17CL45-GT650 i7 QUAD! I visited BTO last Tuesday and placed an order for a custom built notebook and it arrived yesterday. It’s quite a monster if you ask me:

Intel Core i7-3630QM Quad Core Processor (6MB Cache, 2.3 GHz, Turbo Mode 3.3GHz)
16GB RAM
120GN SSD
1TB HDD
Nvidia GT650M

One of the reasons I chose BTO besides the fact that they offer custom built notebooks is that they also offer the choice to have your custom built notebook come without an OS. Unfortunately it came without a license, in other words, when I first started the notebook it booted into a Windows 7 installation procedure. No biggie, created a bootable USB stick with the Ubuntu 12.04 mini ISO and wiped all partitions. 20 minutes later I could boot into a fresh Lubuntu installation. And you know what? All the essential stuff worked out of the box! So far the following things just work:

Network, both WiFi and wired
Sound
Webcam
Fn buttons
Display
Suspend to RAM

The only real challenge is probably getting the Nvidia Optimus configuration to work but I already found some very specific documentation. Yes, the BTO is actually a Clevo W170ER housing with custom hardware.

BTO P•BOOK 17CL45-GT650 i7 QUAD/Clevo W170ER

Other than that the BTO was a breeze to set up and it happily runs Lubuntu 12.04. Booting into a complete desktop takes less than 15 seconds at the moment. Next up is configuring it properly for real-time, low-latency audio. If I want to get the most out of it I’ll probably have to start looking for a decent USB2.0 audio interface. The BTO has no FireWire or PCI Express ports. A sign of the times, guess FireWire is basically dead technology.

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Linux Audio Ramblings

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