# 123ADC module project **URL:** \ **Category:** DIY STUFF\ **Created:** [January 22, 2020, 10:59am UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77 "2020-01-22T10:59:05Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [January 22, 2020, 10:59am UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/1 "2020-01-22T10:59:06Z")
a thread covering the 123adc if everyone has given it a go or an iteration of it. you can get a 9 bit version by using 2 of the ADC chips ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [January 22, 2020, 10:59am UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/2 "2020-01-22T10:59:49Z")
![123ADC](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/1X/ecfadac9880d5de0f3dabc9901e06a91c2acb66c.jpeg) ![123 ADC stripboard 1.0](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/1X/b1a254fec1457284bc41d0621d317c084f505fbe.jpeg) ---
**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:** [January 22, 2020, 11:34am UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/3 "2020-01-22T11:34:41Z")
That’s an amazing result from a very simple design. I get a Voice of Buddha vibe there, as if somebody who knew nothing about rhythm deconstructed the sound. Anybody who lives with a parrot will know how “freeform jazz influenced” their sense of rhythm is at times. I’m something of an antifan of synth percussion, but I can see a use for that module in my noisemaking. ---
**Author:** ![d42kn355](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/d42kn355/32/273_2.png) [@d42kn355](https://lookmumnocomputer.discourse.group/u/d42kn355)\ **Post date:** [January 22, 2020, 4:47pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/4 "2020-01-22T16:47:05Z")
This is excellent 😃 ---
**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:** [January 23, 2020, 3:37am UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/5 "2020-01-23T03:37:59Z")
Cant wait to try it. This project has a lot of potential! ---
**Author:** ![dreeve](https://avatars.discourse-cdn.com/v4/letter/d/b487fb/32.png) [@dreeve](https://lookmumnocomputer.discourse.group/u/dreeve)\ **Post date:** [January 23, 2020, 8:37am UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/6 "2020-01-23T08:37:48Z")
any one found the adc0820 in the us or an alternative im coming up blank on getting any thank you for the awesome plans sam ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [January 23, 2020, 3:52pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/7 "2020-01-23T15:52:13Z")
to be honest I plan on building a derivative of this for a module as a first of a few in logic gate functions. I’m wondering if there would be a better alternative from a supply standpoint. a 8bit ADC. people fire away! and ill figure out which is best to use ---
**Author:** ![antoine.pasde2](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/antoine.pasde2/32/326_2.png) [@antoine.pasde2](https://lookmumnocomputer.discourse.group/u/antoine.pasde2)\ **Post date:** [January 23, 2020, 9:55pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/8 "2020-01-23T21:55:32Z")
If you’re not in a hurry, you can get 5 from AliExpress for less than $2.50 including shipping. > **[US $1.57 14% OFF|5pcs/lot ADC0820CCN ADC0820 DIP 20|Integrated Circuits| -...](https://www.aliexpress.com/item/4000115753144.html)** > > Smarter Shopping, Better Living! Aliexpress.com ---
**Author:** ![dreeve](https://avatars.discourse-cdn.com/v4/letter/d/b487fb/32.png) [@dreeve](https://lookmumnocomputer.discourse.group/u/dreeve)\ **Post date:** [January 23, 2020, 11:02pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/9 "2020-01-23T23:02:18Z")
yea found them from china as well but with chinese new year kicking off lag time is at least a month. i found the smd version on mouser but not sure they will work. ---
**Author:** ![d42kn355](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/d42kn355/32/273_2.png) [@d42kn355](https://lookmumnocomputer.discourse.group/u/d42kn355)\ **Post date:** [January 23, 2020, 11:14pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/10 "2020-01-23T23:14:44Z")
Someone on Ebay has some in Long Beach, California. For anyone in the US. They’re kinda pricey, but hey, can have em by the end of this month! I bought 2! > **[ADC0820CCN NSC A/D CONVERTER 20-Pin DIP LAST ONES | eBay](https://www.ebay.com/itm/ADC0820CCN-NSC-A-D-CONVERTER-20-Pin-DIP-LAST-ONES/392320921045?hash=item5b58262dd5:g:ZZ4AAOSwS9BdFAMg)** > > By NSC DC 96. AS PER PHOTO. ---
**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:** [January 24, 2020, 1:40am UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/11 "2020-01-24T01:40:20Z")
I picked up some parts yesterday. Didn’t see any of the ADC0820CCN but saw plenty of other ADCs. Was going to see if i could get something working with the ADC0838CCN, was only like 2 bucks. ---
**Author:** ![antoine.pasde2](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/antoine.pasde2/32/326_2.png) [@antoine.pasde2](https://lookmumnocomputer.discourse.group/u/antoine.pasde2)\ **Post date:** [January 24, 2020, 8:02am UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/12 "2020-01-24T08:02:29Z")
Looks like the ADC0838CCN has a serial interface (MICROWIRE), which means you most likely need a microprocessor to interface with it. Since Arduinos already have ADCs built-in it’s probably easier to just use those directly if you’re going to use a processor anyway. ---
**Author:** ![Riggidyboo](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/riggidyboo/32/10_2.png) [@Riggidyboo](https://lookmumnocomputer.discourse.group/u/Riggidyboo)\ **Post date:** [January 24, 2020, 9:09pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/13 "2020-01-24T21:09:31Z")
[https://www.digikey.com/product-detail/en/ADC0820CCN%2B/ADC0820CCN%2B-ND/1302674/?itemSeq=315328795](https://www.digikey.com/product-detail/en/ADC0820CCN%2b/ADC0820CCN%2b-ND/1302674/?itemSeq=315328795) ---
**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:** [February 1, 2020, 2:42pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/14 "2020-02-01T14:42:52Z")
Mouser has ADC0820CCN… for five bucks each. They have 11 in stock! [https://www.mouser.com/ProductDetail/Texas-Instruments/ADC0820CCN-NOPB?qs=7X5t%2BdzoRHD32Kf3FMD5Sg%3D%3D](https://www.mouser.com/ProductDetail/Texas-Instruments/ADC0820CCN-NOPB?qs=7X5t%252BdzoRHD32Kf3FMD5Sg%3D%3D) ---
**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:** [February 1, 2020, 4:43pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/15 "2020-02-01T16:43:14Z")
The stripboard diagram has a different connection for CV In than the breadboard; which is better? I assume the stripboard is more recent. I’m giving some thought to a version of this for my Eurorack. I’d consider a couple of changes. First, I’m not sure I understand the reasoning for using diodes on each channel; I’d’ve thought one would use op amp buffers instead. And indeed I found the MIDI to Gate module from Barton Musical Circuits, which has basically identical outputs (eight triggers each with a parallel LED) driven from a microcontroller, uses two TL064s or TL074s to buffer the outputs. Second, I’d add protection diodes and 10µF electrolytic filter capacitors near the power header and 0.01µf caps on the power inputs of the ICs. Not sure how I’d build it, stripboard or Adafruit protoboard or the Eurorack protoboards sold by Synthcube (probably would need 2 of those) or bite the bullet and learn how to make my own PC board. Needs further thought. ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [February 9, 2020, 11:36pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/16 "2020-02-09T23:36:02Z")
hey just to let you know I have a new version coming out, that is scaled to 1v/octave! it’ll have buffering etc. this ones a rough and ready one with minimum components basically. the diodes were the simplest way to stop the logic LOW. sending things to ground :). ---
**Author:** ![d42kn355](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/d42kn355/32/273_2.png) [@d42kn355](https://lookmumnocomputer.discourse.group/u/d42kn355)\ **Post date:** [April 2, 2020, 7:05pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/17 "2020-04-02T19:05:46Z")
@lookmumnocomputer Any update on this? (Not to take you away from the Delays, as I am excited as hell for that!) Has anyone actually built the stripboard layout? I have 2 ADC chips just sitting there lol. ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [April 2, 2020, 8:52pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/18 "2020-04-02T20:52:51Z")
hey! yep. its still here. basically I have a row of breadboards sitting to get transferred onto schematic/stripboard etc. I built the stripboard layout it was the video I did I did the layout then built it to it, it works however I have a much better design now! however that delay has indeed jumped the queue of a few of them of getting from breadboard to the other mediums. rest assured after this im going onto that! as I have finished its dac counterpart too! so I need to be hasty on them :). sadly I cant rush though cus thats when silly mistakes happen ---
**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:** [April 2, 2020, 10:09pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/19 "2020-04-02T22:09:12Z")
I would appreciate some clean-ish pics of the breadboards if its not too much trouble! 🙂 ---
**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:** [April 2, 2020, 10:19pm UTC](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77/20 "2020-04-02T22:19:41Z")
I just replicated the breadboard layout (which is a little different from the stripboard), no connection to synth just LED outputs, a 555 oscillator for clock, and a pot for CV input. Seems to work… [Next page](https://lookmumnocomputer.discourse.group/t/123adc-module-project/77.md?page=2)