# Siren DIY (bending, hack, drone ...) **URL:** \ **Category:** DIY STUFF\ **Created:** [June 24, 2020, 10:19am UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300 "2020-06-24T10:19:02Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\ **Post date:** [June 24, 2020, 10:19am UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/1 "2020-06-24T10:19:02Z")
My first siren, tinkered with my old bike siren when I was a kid like this one ![Sans titre](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/f/f000e0001e2243cde02e48554428420edbf1dcb5.jpeg) (but an old one with real resistance easy to exploit, this one have certainly a black blob inside, but it is just to illustrate the type of toy) 4 select sound (laser, speed, long, 2 tons) add : switch on/off power, voulume pot, bass pot, treble pot, loop switch, momentary push switch pitch pot 1 pitch 2 / LFO mix pot ( ? i don’t see how it is possible but it works like that) switch on/off LFO Rate led LFO Rate pot LFO and add an old pedal delay (bypass switch, level, time, feedback) 555 circuit for LFO with vactrol, a passive tone circuit and all in a sort of cake metal box Work on 9v power supply ![Dub whale siren](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/8/8b57826093517d532999b6955e4712f6c714e1a1.jpeg) https://www.dailymotion.com/embed/video/x6byuks cheap but fun 🙂 ---
**Author:** ![ChristianBloch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/christianbloch/32/56_2.png) [@ChristianBloch](https://lookmumnocomputer.discourse.group/u/ChristianBloch)\ **Post date:** [June 24, 2020, 2:03pm UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/2 "2020-06-24T14:03:09Z")
Very nice and well played too! ---
**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\ **Post date:** [June 25, 2020, 10:04am UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/3 "2020-06-25T10:04:32Z")
Another one, a Drone Siren with more fonctions A generator of sound with 555, an optical envelope with 555 , a PT2399 delay, a mini sequencer 4 step with CD4017 and 555 timer, an LFO with vactrol, volume, hold, loop … and some push switch for pseudo arpegiator ![Echo noise siren (1)](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/2/2b73a2e8dc6b4aab64071a4c43779c0b2268c204.jpeg) https://www.dailymotion.com/embed/video/x6m8dtx spaghetti with 7 littles circuits in a wood box that i made ![Echo noise siren (3)](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/8/847b7a0620235f3cf85ce30b25fc79b0c825a125.jpeg) Work on 9V power supply some schems Optical Envelope ![adsr optical](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/d/d8824c74329549422d90d26d848bf1513051b8d2.jpeg) Sequencer ![complete_sch](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/9/959fa7f1ec2b9cdcba3e6e3550b52b1f54f01cc5.png) PT 2399 Delay ![delay PT2399 mod sound bender](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/5/5edcd33960ebbc724ca8ce62787deab0456e689e.jpeg) ![apc organ toy](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/a/a21ea4120f7b9870fdd3ceb91c9758af8defe9b5.jpeg) ---
**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\ **Post date:** [July 16, 2020, 7:08pm UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/4 "2020-07-16T19:08:43Z")
Drone based on a CD40106 and a CD4040, installed in an old ohmmeter found in flea market ![Noisy drone machine (1)](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/6/6822e4deb89bd6a42e88794fc78f549c03a7e308.jpeg) ![Noisy drone machine (2)](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/c/ca6b058e61daaef08bb89cf029081813f26aeae4.jpeg) ![Noisy drone machine (3)](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/4/4f42d096b2750083ec9280630ff697c9d71cd593.jpeg) https://www.dailymotion.com/embed/video/x6obexs ``` Switch on / off Led on power Volume pot Switch on / off oscillator A Pot pitch osc A Switch on / off osc B Mini switch select sound 1 or 2 for B Pot pitch osc B Switch on / off osc X Pot pitch osc X Switch on / off LFO for B Led rate LFO for B Pot speed LFO for B Switch on / off LFO for A Led rate LFO for A Pot speed LFO for A Mini switch select Square or Saw wave LFO for A Pot Filter for A Switch on / off rhythm sequences Select switch A or B for rhythmic sequence Push switch changes the rhythm of the sequences 5 banana cards for various rhythmic changes Jack out Power socket for tansfo 9V ``` ---
**Author:** ![Bitnik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/bitnik/32/274_2.png) [@Bitnik](https://lookmumnocomputer.discourse.group/u/Bitnik)\ **Post date:** [July 16, 2020, 7:33pm UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/5 "2020-07-16T19:33:00Z")
> [@Dud](#): > > Drone based on a CD40106 and a CD4040, installed in an old ohmmeter found in flea market Stunning, visually and aurally. Thank you. ---
**Author:** ![Farabide](https://avatars.discourse-cdn.com/v4/letter/f/ecc23a/32.png) [@Farabide](https://lookmumnocomputer.discourse.group/u/Farabide)\ **Post date:** [July 16, 2020, 7:34pm UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/6 "2020-07-16T19:34:56Z")
Wow! Yeas, what @Bitnik said. Loved it! ---
**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\ **Post date:** [July 16, 2020, 8:14pm UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/7 "2020-07-16T20:14:49Z")
A bit curious on how you’re using the counter, and also what kind of filter you’re using. Do you have schematics? ---
**Author:** ![heckseven](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/heckseven/32/23483_2.png) [@heckseven](https://lookmumnocomputer.discourse.group/u/heckseven)\ **Post date:** [July 16, 2020, 9:48pm UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/8 "2020-07-16T21:48:11Z")
This is stunning. Well done! ---
**Author:** ![binarymob](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/binarymob/32/5062_2.png) [@binarymob](https://lookmumnocomputer.discourse.group/u/binarymob)\ **Post date:** [July 16, 2020, 10:55pm UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/9 "2020-07-16T22:55:32Z")
I need this in my life. My goal is to torture my brother and sister by making the noisiest most annoying toys for my nieces and nephews. ---
**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\ **Post date:** [July 16, 2020, 11:09pm UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/10 "2020-07-16T23:09:12Z")
(while we’re waiting for @dud 🙂 you may want to check out the _Alien Screamer_ and _Weird Sound Generator (WSG)_ over at [http://musicfromouterspace.com](http://musicfromouterspace.com)) ---
**Author:** ![binarymob](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/binarymob/32/5062_2.png) [@binarymob](https://lookmumnocomputer.discourse.group/u/binarymob)\ **Post date:** [July 16, 2020, 11:28pm UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/11 "2020-07-16T23:28:02Z")
yes. it’s in the list. RWs schematics are great. I appreciate how he labels and numbers the legs of the components. I breadboarded an LFO of his and it was super easy to follow. ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [July 16, 2020, 11:48pm UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/12 "2020-07-16T23:48:07Z")
Mmm, well, trust but verify? If you look at potentiometer R1 at the top of this [http://musicfromouterspace.com/index.php?MAINTAB=SYNTHDIY&PROJARG=OLDIESBUTGOODIES/VCF/vcfstatevar.html&CATPARTNO=&PN=1&SONGID=NONE](http://musicfromouterspace.com/index.php?MAINTAB=SYNTHDIY&PROJARG=OLDIESBUTGOODIES/VCF/vcfstatevar.html&CATPARTNO=&PN=1&SONGID=NONE) it has legs 1 and 3 reversed. I didn’t notice until after I’d gotten a PCB fabbed. For Wilson it wouldn’t have mattered because he wired all his panel controls but I had PCB mounted pots… failed to check them (his 2 and the 3 attenuators I’d added) and got 4 out of 5 wrong. Nice filter though, once I corrected my PCB. ---
**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\ **Post date:** [July 17, 2020, 7:24am UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/13 "2020-07-17T07:24:53Z")
there’s no filter, it’s sync between 2 osc with CD40106 one osc ![40106_just_osc1](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/c/ce1083bfced11d91503f11a38c91b4817f068014.png) sync ![pitchmod](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/d/d03fac1c3865ee2656eb1eb33c3cd534af47e862.png) ![sync](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/1/1d71f4bac09951e40c79bc15eea31feeda4fb85a.png) the vid of Casper Electronic about that part 1 [![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/2/29dfd870f5c4cbf536b1662f785aa5cc957e383a.jpeg "Casper Electronics DIY synth building. Part 1: Oscillators") ](https://www.youtube.com/watch?v=FaoJaLmZaL4) really the simplest osc in the world 🙂 ---
**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\ **Post date:** [July 17, 2020, 8:09am UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/14 "2020-07-17T08:09:39Z")
I found my notes from this project, because I don’t have a complete schem, it was tests and mix with several schem it’s a bit of a mess but here it is ![noisy drone machine - sound bender](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/b/b3fe6875322dcc391aa4404d802c583ff3d3c392.jpeg) ---
**Author:** ![irregularshed](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/irregularshed/32/30374_2.png) [@irregularshed](https://lookmumnocomputer.discourse.group/u/irregularshed)\ **Post date:** [July 17, 2020, 9:56am UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/15 "2020-07-17T09:56:35Z")
Superb! It _does_ sound a bit like the inside of my head though 🤯 ---
**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\ **Post date:** [July 17, 2020, 11:00am UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/16 "2020-07-17T11:00:42Z")
Ah, cool, makes sense now that I see it 😀 But the CD4040? Are you feeding that with one oscillator and tapping different subfrequences? (guess I should listen to the entire video again, was fighting with dailymotion’s controls last time so may have missed parts of it 🙃) ---
**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\ **Post date:** [July 17, 2020, 11:25am UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/17 "2020-07-17T11:25:47Z")
sorry, to be honest i don’t know what i did at the time with the CD4040, maybe a mini patch bay for different divisions for the LFO rythmics ? mystery mystery … ---
**Author:** ![Caustic](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/caustic/32/15588_2.png) [@Caustic](https://lookmumnocomputer.discourse.group/u/Caustic)\ **Post date:** [July 17, 2020, 3:01pm UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/18 "2020-07-17T15:01:15Z")
I imagine the CD4040 + a rotary switch would give you an even 12 oct split, if you get the frequency range right. You would just need to make sure that you give enough ways to tune the higher and lower frequencies such that the highest frequency and the lowest frequency are 12 octaves apart (If you use all stages). ---
**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\ **Post date:** [July 18, 2020, 10:06am UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/19 "2020-07-18T10:06:04Z")
yes it’s like a CD4024, but here it’s seems that i use it only for rhythmic with combination of several out of the CD4040 to make some little “sequence” ---
**Author:** ![THOGRE](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/thogre/32/5189_2.png) [@THOGRE](https://lookmumnocomputer.discourse.group/u/THOGRE)\ **Post date:** [November 24, 2020, 5:47pm UTC](https://lookmumnocomputer.discourse.group/t/siren-diy-bending-hack-drone/1300/20 "2020-11-24T17:47:35Z")
No problem for me, I managed to build your PT2399, it will be a walk in the park 😜