Lovely Build, X
With Khadas I would want to make it a android gaming box and play COD \ PBG with buddies
RPI with the justboom amp hat TAS5767m. was doing something that I have not enjoyed before and than having one uSD card with kodi for movies and YouTube and other uSD card for Moode was like a dream. Now Since I have assembled the My Ref Rev A - I decided to try the RPi + HIFiBerry DAC+ PCM5122 for music only duty. I may upgrade from pi3 to pi4 but in future.
I am struggling with a hiss from the pga2311 board when I go into the gain zone - I want to know if there is a way to remove the hiss (tweeter) maybe when 6” away I can hear.
Running a RPi streamer in my main system. RPi + HAT DAC + moOde into B1 + Alpha Nirvana. Works beautifully. But for me setting up the RPi was not much DIY fun. I'm an old dog now and learning curves were steep. The DIY fun part was building the Matt Garman HAT DAC. Hope to upgrade the DAC soon with another diy DAC, but the smd soldering is also nerve wrecking. Bottom line - don't grow old.
- don’t grow old -> wish we were Spock.
- RPi, yes it’s a learning curve but gotta do it.
- Soldering smd is pain as we age be it 40 or 45 or 65 but I use a wearable 5x with dual led which makes it easier. and its there on Amazon.
Those are similar to Elecaudio but I get mine from an OEM in bulk for production. I have a few left in my shop.
On the bench tonight is some computer repair. My laptop battery was bulging and pressed against the trackpad making inoperable. The K button key was broken. So it was a simple matter to open the case once you know where the screws are. You can see the old puffy balloon-like battery vs the new slim flat one. The bad K key button was swapped with a redundant ALT key. A label maker came in handy. My 2 year old HP laptop with Core i7 and 32GB RAM and 1TB SSD has been given a new lease on life.
I got all these tools out but turns out all you need is a small Philips and a guitar pick pry tool.
The insides are amazing feat of packaging:
Old battery:
New battery:
Keyboard fix:
I got all these tools out but turns out all you need is a small Philips and a guitar pick pry tool.
The insides are amazing feat of packaging:
Old battery:
New battery:
Keyboard fix:
I got a 16GB DDR4 Ram and 1TB Samsung 980 NVMe ssd to put , i am too lazy to put those in.
8GB Ram is holding my processor back , AMD Ryzen 7 4800U
First time got a AMD CPU and i have to say i am super happy.
8 core 16 thread on a UltraBOOK is total Vodoo to me. My previous laptop was i5 4th gen [Dell XPS 15] a huge upgrade.
I still kept my old one as it can run Windows XP [got all driver] and spme of my software doesnt like anything newer than XP.
8GB Ram is holding my processor back , AMD Ryzen 7 4800U
First time got a AMD CPU and i have to say i am super happy.
8 core 16 thread on a UltraBOOK is total Vodoo to me. My previous laptop was i5 4th gen [Dell XPS 15] a huge upgrade.
I still kept my old one as it can run Windows XP [got all driver] and spme of my software doesnt like anything newer than XP.
@xrk971
That motherboard looks almost like my i5 8th gen dell 7000 Inspiron 2in1’s did intel give these guys some reference design ? Will share my motherboards pic a little later.
Only thing that I didn’t like with EVO 980 is if we use performance mode the warranty is void.
I have two drives Evo 980 500gb and evo 860 in the laptop.
Thanks for informing me, Thursday this week , surgery will be done.
No worries - enjoy the process, it’s still going to be plenty fast without the performance mode. Also the 980 evo is without DRAM.
On the bench tonight is the RPM V12 preamp testing with the main board and 12AX7 tubes. Slow and methodical. Will report back later.
On the bench is the new Cat’s Meow tweeter. A revolutionary new technology that sounds natural and organic, with a piercing clarity.
Preliminary crossover for this speaker using a 6.5in aluminum woofer with XBL technology and a ribbon tweeter is looking promising. The raw response curves were measured in a different cabinet with similar dimensions. Will need to redo in the new cabinet but should not be far off.
I've started to play with depletion MOSFET. IXTP08N100D2. 280V B+ with a 33k load resistor and 600R source resistor, I get µ=60. The scope wobbles a bit because the thing is so Jerry-rigged.
CH2 is input from DDS, CH1 is output from drain.
CH2 is input from DDS, CH1 is output from drain.
Nice work. I like to use the Meanwell AC/DC modules that make 5v for the soft start logic and to power MCU.
My tweeter and lab helper is taking a break!
