Back on MacOS, that "another process has device opened for exclusive access" is probably why it's failing. Another process is running that has the st-link device open & it's preventing your st-flash command from accessing it. (It might be worth updating libusb if that didn't get done when you instal...

Macports (like homebrew) provides up2date ports of a lot of the open source projects that MacOS doesn't include by default. If you've got brew installed then easiest is probably just install stlink using the brew installer (i think "sudo brew install stlink" will do that. Sorry for being a bit vague...

So here is my last attempt: Go into the "performer" directory OK Launch the VM: vagrant up OK Open a shell: vagrant ssh OK Follow the procedure described by gbiz (p13) : git clone https://github.com/westlicht/performer cd performer git submodule update --init make setup_stm32 cd build/stm32/release...

I've just been trying to order some parts from RS & noticed no matter how much i added to the basket it added a £4.95 delivery charge, even though all items were marked as "free delivery" & the basket still had "place order before 8:30pm for free delivery". Turns out they're introducing a handling c...

No problem !
I'll add "--force" to the doc so anyone else trying this will use that.

efluon, i've seen that here too. try adding "--force" to the dfu-programmer erase command. ie

dfu-programmer atmega32u2 erase --force

Edit: these kits are now all sold Something i've been meaning to do for a while, this cv-19 lockdown has given me the opportunity to put together a small number of µDervish full kits for sale ... * DSP & control PCBs with all SMDs factory pre-assembled. The ATTiny & EEPROM are programmed. The boards...

I used TE Connectivity LR0204F series resistors, which are the correct physical size, they fit flush to the PCB & their legs fit the holes. I sourced mine from Farnell, but Mouser also stock them. The resistor bodies have to be 3.5 x 2mm to fit correctly. The body of a regular 0.125W resistor might ...

I forgot, theres also "SpinCAD+Dervish.txt" in that same directory on how to use SpinCAD with dervish. That's probably closest to what you want to do here.

If you get it working & don't mind creating a basic text doc on how you did it, that others could use, i'd happily add it to the FAQs there.

Dervish/uDervish will run any fv-1 binary, (same applies for any fv-1 based module). All you need to do is package them up into a Dervish format bank & upload them. There's a couple of FAQs that cover how to do this with the Dervish programming environment http://gbiswell.myzen.co.uk/dervish/DSP/doc...

One thing i just noticed i forgot to mention above, you'll need to create a udev rule file for the v3 in the vagrant image. In /etc/udev/rules.d/ you'll find 3 rules files with names beginning "49-stlinkv". You'll need to add a similar rule file for the v3 that contains the usb id for the v3. You'll...

Neil, if you don't mind sharing, can you remember where you got your 3478a calibrated ?. I really should get around to replacing the battery in mine before it runs down & it's cal cert expired a while back. Post battery swap would be a good time to get it done. Sure: https://www.absolutecal.co.uk/i...

For bench DMM, go for HP/Agilent/Keysight. I still reckon the best value-for-pocket-money is a calibrated HP 3478A. Look for a good one eBay and then get it calibrated (change the internal battery before you get it cal'ed). Last time I got mine calibrated cost me £69 which was less than half what I...

is there a specific tool you DIY'ers use for this though (to turn these things)? just a tiny screw driver? You need a "trimmer adjustment tool". eg https://uk.rs-online.com/web/p/trimmer-resistor-adjustment-tools/8524614/ One end is a regular screwdriver blade, the other end has a recessed blade, g...

I've just been looking for something similar for a LED lighting project i've been working on. I needed 12V @ 5A panel mounted, something that won't budge once it's in. I've ended up using RS sku 487832. They're not the cheapest, but certainly match your requirement if you need something at that curr...

... The Mutable VM won't see the STLINK-V3 at all even though it sees other USB devices. ... It sounds like you need to configure USB passthrough for the programmer USB id for the VM. Until that happens the host o/s will retain access to it. You can configure passthrough from the VirtualBox console...

The Dervish build guide has a debugging chapter towards the end (link) . Start by working through the "Audio testing & debugging" section. That details the places you need to check. Once you've fixed the audio, if the CVs aren't working then there's a CV debugging section a couple of pages further d...

Servisol Soldamop braid from RS works for me.

Sounds like a plotter. https://en.wikipedia.org/wiki/Plotter

No doubt you'd find them on ebay or one of those places that specialise in refurbed lab equipment.

I've added "-p" support to eeprom_details, so now that should show the pot mappings for the programs directly from the eeprom. I just tested it here & seems to work. That's much easier

Download it from here & overwrite the existing "DSP/bin/eeprom_details" with it.

I just tried it here. I uploaded the default 11 bank Dervish image. It allows switching between 11 banks after i ran " fv1-edit-eeprom -m 11 , before that it was only 2 banks. So try doing that. The reason it'll only show 2 banks for you with the default Dervish image. During the reset procedure, uD...

The uDervish image only has 4 banks, so your upload worked correctly. The people who asked for a smaller form factor version of Dervish requested that it had fewer banks. For anyone who does want more banks, exactly as you're doing, the 11 bank image will work provided you increase the maximum numbe...

Phew :hihi: I recall someone had a build with a similar noisy output issue that was caused by a bad solder joint on R17. But in that case the voltage on pin 26 wasn't 3V, so it was easy to find. No problem if you can't, but out of curiosity, can you remember what voltage you had on pin 26 (REFP) of ...

Obviously you can't rule out it being the fv-1. But i can't think of another one that's been faulty in all the dervish/udervish builds, it'd be the first. It sounds like it's basically working if the wet signal has some semblance of the effect you're expecting. Aside from being masked by white noise...

Rotate the board to the left, that C becomes a U, which indicates it's programmed with the uDervish image. (A dervish eeprom would have D). If the eeprom wasn't programmed the clip led would be permanently on. You can easily isolate the eeprom. Short the two pins of j1 (int/ext) on the dsp board. Th...