Oh indeed. Agree with all that, even if some is stating the bleeding obvious. "Don't reuse the part after removal with a soldering iron". lol. Good luck reusing that semi-molten pile you have on your bench :) And as i said, i saw firsthand what happens if you contact them with the iron. I always rtf...

Yeah, i like them. They perfectly suit the sound of that filter. I've built three of those filters up with them, they're my default filter. though one has a noise mezzanine board so it's usually used for percussive duties. Downside with them, they're way more fragile than "regular" smt mlcc caps. Th...

ljwall83 wrote: ↑

Sun Feb 07, 2021 4:48 am

Slight tangent but I just checked JLCPCB. Their VAT page says they'll be charging VAT to UK customers on orders under 135.

I put a small order in with them on friday & the payment page states they're now collecting vat for uk orders.

Theres been a banner at the top of the mouser.co.uk page for the last couple of months explaining this. Theres no change if you're not registered for VAT, they collect it when you pay, as they always have. You won't get stung for additional customs collection charges as the duty has already been pai...

I've never heard of them flipping a bit in flash memory (this is permanent as it persists across reboots). I know it used to be an issue with dram, less so now as a lot of that has ecc.

It only takes one corrupted bit in a vector, jump or branch address in the program code to have the MCU executing from an invalid location.

Slightly offtopic ... For jitter on the PI, as in any Linux system, theres some basic tunings you can/should do to improve the deterministic behaviour of your applications. Most people don't seem to bother doing this, they just run the application as-is & assume the scheduler will do the best thing ...

Wifi on an 8-bit avr ?. Pi gives you wifi ootb, plus the ability to do things like use a web server to recall those stored patch configurations. And a lot of different programming language choices. Coding the UI will be a lot easier. If you're concerned about corruption of the filesystem, run it in ...

What ixtern says. If you're at all worried about linerarity you'll need a calibration routine to create a device specific LUT with these MCP4xxx DACs. You might get lucky going through a tube of them & find one that's linear throughout the range. You're not the first to notice this., it's been discu...

Have you adjusted the decay trimpot ?.

interesting, I don't think I've ever had scratched panel PCBs from Seeed. What options are you folks selecting when ordering your panels? ENIG and 1oz copper? What are you doing in design stage? Do you have full copper pours? Do you pull back the soldermask around drill holes for pots etc? What do ...

I probably should have added that I've never used Dirty PCBs for front panels. That comment was more about them being a general PCB fab that offers a cheap regular postage option. Given how much they charge, if i got front panels from there, i'd expect them to be scratched. Those unused scratched pa...

the engineers who run your gerbers don't necessarily expect you to be making front panels... THIS. 100% A few years back I had an email conversation with someone in PCBWay support, after a particularly bad batch where most were really badly scratched. They said that PCBs for front panels goes throu...

Hi Dave

Bitsbox & Cricklewood sell in small quantities, though it's been a long time since i've bought anything from either, so i don't know what the service is like from either now.

Sad news.

You have it there cptnal. So much great music. After i saw the news in the Guardian, I went to line up a "nothing but Budd for today" playlist, I'd forgotten how much great music he'd done. It was hard to decide what to go for first. "Music for 3 Pianos" playing now. Bill Nelson to follow.

It's failing the initial static voltage check. There's some suggestions at the start of the debug section for voltage checks that fail. I assume the other end of the diodes is those voltages plus the ~600mV drop. It'd be useful to know that. And what are the other static testpoint voltages on the u...

It's failing the initial static voltage check. There's some suggestions at the start of the debug section for voltage checks that fail. I assume the other end of the diodes is those voltages plus the ~600mV drop. It'd be useful to know that. And what are the other static testpoint voltages on the uD...

hi djamsia, sure. ping me an email.

dubtoms, if you don't mind getting your own panel made up, I've still got a couple of PCB pairs left.

There's also some bytes in the controller init sequence that determine the RAM to screen mapping. One changes the scan direction, the other the mapping so you can flip the screen without changing the drawing code. Similarly you can bake in the 2px offset. a cool - that would be one(or two) more byt...

Yes that could be it. I had a quick look into what could cause SIGILL on the Pi. Binaries built for ARMv7 or 8 would do this on an an ARMv6. File doesn't show the architecture the binary is built for, which is why they possibly all look the same, but "readelf -A " shows the cpu arch the binary was b...

As nobody else has mentioned it, a general observation on this from a linux/unix perspective ... Whatever it is you are running there is being killed due to an illegal instruction (SIGILL, signal 4). pd was reporting the same thing in the logs on the previous page. As it's the only issue you're gett...

mager, there's a Mouser cart for the red ATMega programmer that has all the components you need. A link to the cart is at the top of the ATMega programmer BOM sheet. Or if you've got a teensy3 spare it's easy enough to build one out of one of those. Details are in the programmer directory. Don't use...

I took everything from 0 and I followed the instructions on this page: https://github.com/westlicht/performer/blob/master/README.md and I find myself stuck again in the previous step: "xx:performer xx$ make setup_stm32 (mkdir -p /Users/xx/performer/./build/stm32/debug && cd /Users/xx/performer/./bu...

There's no reason i can immediately think of why those 2 programs wouldn't exhibit it & others would. They use both left & right adc & dac channels, as do other programs. I'd start by investigating the issue with output 2. My guess is that'll be the cause of the hum. There's a section in the build g...