# Aout\_NG Not working on midibox seqv4 **URL:** \ **Category:** MIDIbox SEQ\ **Tags:** help, aout\_ng\ **Created:** [February 15, 2018, 10:13pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215 "2018-02-15T22:13:03Z")\ **Posts on this page:** 19\ **Page:** 1
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [February 15, 2018, 10:13pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/1 "2018-02-15T22:13:03Z")
Hi Guys, I am finaly near the end of my build of a seq4. Only need to have the Aout\_ng and possible the D-out working.  The D-out I will try to build on a breadboard for some extra gates and clocks. Realy looking forward for the awesomeness of controlling a modular with the midibox. Thanks again TK for bringing the AWESOME project to the public. Would you have any idea what can be the issue here with my aout\_ng? Does anything below indicate wrong wiring? **MBSEQ\_GC.V4:** “CV\_AOUT\_Type” and set it to 3 for AOUT\_NG And on the CV Configuration Page the aout\_ng is set. Core STM32F4 AOUT\_NG on j19 Connected like J1:1 -\> J19:Vs J1:2 -\> J19:Vd J1:3 -\> J19:RC1 J1:4 -\> J19:SO J1:5 -\> J19:SC At least I hope. No led is enabled on the Aout after booting the midibox and the DAC is not getting warm. I have only J1-j19 connected so no 12-/+ V on J3 On pin 20 on the TL5630 I got 4.5V on pin 11 as well -Aout not set in the config 4.5v on pin5, 20, 23 and 11 of the dac -Aout set in the config 4.5v on pin2, 5, 20, 23, 11 of the dac [6016.659] Setting AOUT:CS pin to ca. 5V - please measure now! 4.5v on pin2, 3, 4, 5 of the dac [6016.659] Setting AOUT:CI pin to ca. 5V - please measure now! 4.5v on pin2, 3, 4, 5 of the dac [6476.996] Setting AOUT:SC pin to ca. 5V - please measure now! 4.5v on pin2,3,4,5 of the dac   Does anybody has a hint what I should check? Thanks in advance,   Cheers   Tim ---
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [February 15, 2018, 10:37pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/2 "2018-02-15T22:37:51Z")
Testing not on the DAC but on j1. I also learned that you have to set the pin low manually after a test otherwise it stays hight. - testaoutpin cs 1 sets J1(4) SI high -testaoutpin sc 1 sets J1(3) CS -testaoutpin si 1 sets (J15) SC high ---
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [February 15, 2018, 11:05pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/3 "2018-02-15T23:05:49Z")
Hmmm hope I did not burn anything. I rewired J1 and ran the test from MIOS studio, Now I have CS test J1 pin 3 high SI test J1 pin 4 high SC test J1 pin 5 high But no led flashes   ---
**Author:** ![slo](https://forum.midibox.org/user_avatar/forum.midibox.org/slo/32/313_2.png) [@slo](https://forum.midibox.org/u/slo)\ **Post date:** [February 17, 2018, 2:17am UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/4 "2018-02-17T02:17:04Z")
Run testaoutpin cs - si - sc with 1 and 0 and look for the switch in voltage at the pins, if you get that then all your wiring & config is good. Which LED are you expecting to flash? there is only a power LED on the AOUT\_NG PCB.  ---
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [February 17, 2018, 8:34am UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/5 "2018-02-17T08:34:49Z")
Hi Slo,   Thanks for the help. From the AOUT documentation: [http://www.midibox.org/dokuwiki/aout\_ng](http://www.midibox.org/dokuwiki/aout_ng) “You can leave out the TL074s for a first test. Then connect J1 to the core. Power up your Midibox. **If the LED doesn’t light up,** IMMEDIATELY switch off power and re-check all connections and soldering.” “If the LED is on, you can now connect analog power (+/- 12V) to J3.” So I expected the led to power up, but it doesn’t I ran the tests and get: Pin 1 VS, 2, VD CS test J1 pin 3 high SI test J1 pin 4 high SC test J1 pin 5 high So the wiring seems good.   Cheers   Tim ---
**Author:** ![slo](https://forum.midibox.org/user_avatar/forum.midibox.org/slo/32/313_2.png) [@slo](https://forum.midibox.org/u/slo)\ **Post date:** [February 17, 2018, 4:19pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/6 "2018-02-17T16:19:17Z")
If LED1 does not power up then you are not getting power and/or GND to the board, or the LED is no good. Recheck connections and be sure the wiring is correct , the J19 to Aout\_NG is non standard and not 1 to 1 pin placement. ---
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [February 20, 2018, 1:43pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/7 "2018-02-20T13:43:35Z")
Ohhh no I removed the DAC yesterday but looking back to my notes I actually had 5v on pin 5 on the dac (/PRE ). I just learned that the flatside of the led symbol means Cathode, which is the - So there is a high change that I have the LED connected wrongly. I mean 5v on the /PRE input should light up the LED right? Would wrongly placing the led mean a non working aout? If the led is wrong I will re solder the old DAC first otherwise I will bet on  a new one.       ![5a8c2317c4d6fScreenshotfrom2018-02-2013-45-13.png.08e3e98ebbff7be4bda7991bb31cec9b.png](https://forum.midibox.org/uploads/default/original/2X/f/f2741deec768ce7d5b74d877927e7125a9633dd2.png) ![5a8c23fd25df8Screenshotfrom2018-02-2013-49-59.png.384a2b30f4f0d2896591159a409ee192.png](https://forum.midibox.org/uploads/default/original/2X/f/f1243e95930df6f105e8a87a890cc8d6a61128ea.png) ---
**Author:** ![slo](https://forum.midibox.org/user_avatar/forum.midibox.org/slo/32/313_2.png) [@slo](https://forum.midibox.org/u/slo)\ **Post date:** [February 20, 2018, 4:16pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/8 "2018-02-20T16:16:32Z")
> Quote > > I mean 5v on the /PRE input should light up the LED right?  No, not if you installed the LED backwards. The LED only indicates power is available at the PCB, the Aout\_NG would work without it. Remove the LED, test it with a 9v battery and resistor, if it lights install it the right way and if you didn’t damage the DAC on removal, re-install it. ---
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [February 20, 2018, 8:21pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/9 "2018-02-20T20:21:20Z")
Ok thanks, the LED was wrongly soldered. The led is now working when connected the board without DAC. The DAC did not survive ☹ I will get a new one.   And will report back here.   thanks for your help   Cheers   Tim   ---
**Author:** ![slo](https://forum.midibox.org/user_avatar/forum.midibox.org/slo/32/313_2.png) [@slo](https://forum.midibox.org/u/slo)\ **Post date:** [February 20, 2018, 9:41pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/10 "2018-02-20T21:41:32Z")
I’d very interested to hear your report and I really hope it works for you. I could not get my Aout\_NG working and gave up after many tries, 1 or 2 other people have experienced the same thing after doing everything right, so your input will be welcome. ---
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [February 20, 2018, 10:31pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/11 "2018-02-20T22:31:29Z")
Thanks a lot for your help! I bought my DAC from ebay and to be honest I am now buying it from mouser so I have more trust in it. I will report back here in a while.   Cheers   Tim   ---
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [February 25, 2018, 9:36pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/12 "2018-02-25T21:36:08Z")
Ok I got a new DAC. the led is lightup. J1 Pin 1, GND J1 Pin 2, + 4.5V [24708.300] Setting AOUT:CS pin to ca. 5V - please measure now! J1 pin3   4.5v [24683.868] Setting AOUT:CS pin to ca. 0V - please measure now! J1 pin 3 0v [24742.891] Setting AOUT:SI pin to ca. 5V - please measure now! J1 pin 4   4.5v [24755.116] Setting AOUT:SI pin to ca. 0V - please measure now! J1 pin 4   0v [24775.452] Setting AOUT:SC pin to ca. 5V - please measure now! J1 pin 5   4.5v [24790.716] Setting AOUT:SC pin to ca. 0V - please measure now! J1 pin 5   0v The cables seem good. A new dac is soldered which I carefully inspected. Now ±12v is connected to j3.  On the TL074s ±12v is measured that is pin 4 +12v. In bipolar mode I get about -2.6v on all 8 channels, caliaout 1 max does nothing, neither does changing the calibration voltage on the midibox itself. I am trying to find very hard if I soldered something wrong but that it doesn’t seem like that.   Anybody any tip what I should do?   ---
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [February 25, 2018, 9:42pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/13 "2018-02-25T21:42:37Z")
Ah I seem to have sucses.  When I disabled th aout\_ng in the config, saved it and turned the midibox off. Then turned it on again, selected - aout-ng and tweaking the calibration voltages gives me output!!! ITS ALIVE!!! It’s to bad that most likely the first dac was fine as well and this does look like a bug. (not sure) I will continue the tests another day. Cheers, F\*cking happy Tim ---
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [February 25, 2018, 9:46pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/14 "2018-02-25T21:46:16Z")
Btw found this small dc-dc conversters mentioned by Pichenette @MI ’ Traco Power TMR1-1222 or TRN1-1222’  so will try to use this for a ±12V psu ---
**Author:** ![slo](https://forum.midibox.org/user_avatar/forum.midibox.org/slo/32/313_2.png) [@slo](https://forum.midibox.org/u/slo)\ **Post date:** [February 25, 2018, 10:34pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/15 "2018-02-25T22:34:56Z")
This is good news. It might help me in my quest to get Aout\_NG working, thanks for the update. ---
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [February 28, 2018, 12:43pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/16 "2018-02-28T12:43:24Z")
Hi Slo,  i hope you will solve it and make it working. I still did not have time to do the full testing.  Anyhow good luck and maybe post you progress here. Cheers   Tim ---
**Author:** ![T.K](https://forum.midibox.org/user_avatar/forum.midibox.org/t.k/32/7_2.png) [@T.K](https://forum.midibox.org/u/T.K)\ **Post date:** [March 3, 2018, 8:10pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/17 "2018-03-03T20:10:25Z")
Great that this helped at your side! 🙂 But for the records: currently I’m not able to reproduce this issue. The test procedure: - turn on MIDIbox with unconfigured AOUT module - in CV page selected AOUT\_NG module - exit CV page (so that this setting will be stored) - power-cycle MBSEQ - -\> AOUT\_NG properly configured and working - can be repeated with multiple power-cycles: AOUT\_NG properly configured and working Best Regards, Thorsten. ---
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [March 5, 2018, 10:26pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/18 "2018-03-05T22:26:35Z")
Hi T, Only 1 thing i did not mention is that I applied a bit off pressure on the tl074’s so most likely i did something wrong. Maybe the contact wasn’t ok before. Althought ±12v was there. I will try if i can reproduce it on my side. But if i do than highly likely I did something wrong here.   Cheers Tim ---
**Author:** ![flyweight](https://forum.midibox.org/user_avatar/forum.midibox.org/flyweight/32/10804_2.png) [@flyweight](https://forum.midibox.org/u/flyweight)\ **Post date:** [March 13, 2018, 10:29pm UTC](https://forum.midibox.org/t/aout-ng-not-working-on-midibox-seqv4/20215/19 "2018-03-13T22:29:58Z")
I am not able to reproduce the bug at all. Aoutng just working fine.