four_corners wrote: ↑

Tue Sep 29, 2020 2:51 pm

Ooh, that would be awesome. The bluepills are so affordable, that would be a great way to switch between firmware without having to reflash it each time.

But the opera rotas is so affordable you can just build two and sync the polysynth to the drum machine.

Very portable live setup...!

Are you saying the blue buttons do not work at all ? [ for next and prev functions ] I though you had said the were working . . . If the blue buttons are working, you might want to try pushing both together but for longer than 3 seconds . . . Whatever it was -- I made it work. It was an embarrassin...

I had a bit of a near-miss horror story with my 201-12, traveling to Vienna I was fine, but on the way back they weighed the bag (I had it in a leather case with wheels) and it was a bit over the limit so the clerk asked me to check it. I refused, saying that I can’t afford to have them break it. We...

Hello ... Regarding your Red Button problem, can I check that you have been holding it for 3 seconds to enable the menu settings ? You can also try pressing the Next and Prev blue buttons and holding down for 3 seconds. This should allow you to enter the Menu Settings. ryk I tried it and forgot to ...

Yes, the Next and Prev buttons work as they should. I just experienced a crash after sliding the play direction slider all the way to the right (play once) and back to forward — the unit hung and I had to power cycle it. The start/stop (grey) works as it should, so do Next and Previous.. Only the r...

C'mon !!! No keyboard no Easel, you definetlly need a 223e, it's also a sequencer and a pulse generator or clock. :buchla: I’m sorry to ressurect this old (pre-corona, in a way) thread but I need to ask: How is the 223e usable as a sequencer? Arpeggiator i got, but sequencing? Please enlighten me!

So to close this thread: all of this helped — replacing thr LM7805 helped. Now the 223e works nicely in the Easel case.

Ima call it “Easel-Kai”.

I was looking at the output from the inverter and thought „I need to try that“ - tele_player spoilered it now, which sparked an idea in my head as well.

Thank you Adam for the inspiration. Todd is right, the timbres are really something!

Yes, the Next and Prev buttons work as they should. I just experienced a crash after sliding the play direction slider all the way to the right (play once) and back to forward — the unit hung and I had to power cycle it. The start/stop (grey) works as it should, so do Next and Previous.. Only the re...

vgermuse wrote: ↑

Fri Sep 18, 2020 1:32 pm

Hey Kai! This is slightly off topic but resonant :-)

Good to hear your cybervoice

Wow. Very resonant and totally relevant! Thank you, Todd!

papz wrote: ↑

Fri Sep 18, 2020 12:29 pm

Because it needs a VCS3 Card.

OK. Let me rephrase the question: how did Don Buchla know about the VCS3 card in 1972??

These should read approx 5V. If not, then either the tracks to the diodes are not good or there is a problem with the diodes ( very rare ). Hi Ryk, I tested them and the lower end (near the edge of the PCB) read about 4.95V, the upper end reads a little under 4.5V. The continuity on the button work...

My guess is that portable/keyboard based synthesizers was a new concept and there were no standards at the time, so noise just didn't make the cut. Don had made the 410 Module Cluster and the 212 Dodeca module which both had noise, but were missing oscillators and a sequencer. When comparing the Mi...

With the 208C making it more obvious, I was wondering if there is a (quirky?) quote by don Buchla about why there never was a noise source in the original Easel? (You could argue that there *is*, but let’s not get into that, as this is not the “noise” I mean to refer to...) I’m using the papz VCS3 c...

Thanks a lot for the advice. I will give it a go!

I have a problem with my RYK M185. It worked flawlessly at first, now I can't get the red button to work, thus leaving me without a chance to get into the menu and change the MIdi channel (or to get into Firmware update mode, etc). what could be the cause of this? what's the best way to find the pro...

thanks for the opinions, these mirror my experience with the Buchla ones. I'll just use them as (expensive) fancy looking connectors for my 2TT I guess...

Great!. With the screen is 10x more fun =D. Hoping you get it. IS quite easy to desolder: just put a resistor leg touching the four pins at the same time, while you apply the hot at the center pins. When all are liquid, remove the screen with tweezers and then put the new one. Obviously with socket...

I'm talking about this: https://www.landscape.fm/ooh Is anyone successfully using the O/O touchpoints by landscape.fm with their Easel? I can't seem to get any meaningful results, then again I haven't soldered the touch points together (they make it sound optional: "**Soldering along the edges of wh...

PSA: are you using sockets to connect the display, Blue pill, OPL and multiplexers? I have to exchange a faulty screen and it's quite complicated now without them. so I learned: use sockets. especially if there is a board that makes access to the solder pads of other components difficult... (AKA: PL...

papz wrote: ↑

Thu Sep 10, 2020 12:15 pm

Please do

A retirement project maybe?...;-)

In the 208 the +5V rail is used to power the LEDs and for LM301 compensation on card 9 only, it still can work with +3V instead of +5V. Ah that makes sense. Thank you for clearing that up. Someone really needs to dig through this Subforum and edit all this wisdom together into a 208r/p maintenance ...

Yes I think I can. When the Easel is cold and the 223e works, the output on the +5V is 4.91V, so that should be another indicator.

I don't think I have a spare LM7805 here, I'll just order some.

weird: the 208r works with 3V...

I measured:
-15.12 at -15
+14.98 at +15
11.84 at +12
3.07 where 5V should be

0. at Q/N
and 2.84 at the next two (unlabeled) pads
0 at the last one.

This is with the 208r installed and with the 223e gone into erratic mode.

I just bought a used 223e and experience erratic behaviour in my Easel case (was planning to replace the 218r and turn it in to an "Easel Kr"). A few minutes after power on, the 223e's display turns white (no letters) and nearly all LEDs on the keyboard light up. the Keyboard is then unresponsive, t...