Doepfer A166 Dual Logic Module-Combining Digital Signals Part One

A demonstration of the construction of a patch from the manual of the Doepfer A166 Dual Logic Module. The OR outputs are used to create triggers for some percussion modules.Sound and Video by Raul Pena.

[@bonjourmyfriends]

Thanks for your videos! I decided I'm going to get into Eurorack and have been binge-watching your channel for the past week. This one probably did the most to clear up a concept I couldn't fully grasp just by reading.

[@sysexstudio]

Hi Raul, Thanks for including some explanatory graphics in this video. That really helps with understanding what's going on. Hope you include simple explanatory graphics in future videos as well. Also, thanks for doing these videos. They've helped me immensely over the past year.

[@joejam3250]

Raul could you help me? I just purchased an A166. However it doesnt work and im afraid its fried? Red stripe down for that one? I didnt see any labeling.. Are there fixes?

[@robertjones1704]

I'm totally lost here.... What's going on? What is the purpose of the A-166? Can't this just be done thru a divider? What exactly do the binary logic circuits do in this case?
1.0V --> Input 1| AND Output = ?
1.5V --> Input 2| OR Output = ?
0.8V --> Input 3| XOR Output = ?
Q1: What comes out? Or is the A-166 just a technical mathematical divider supplying random outs?
Q2: Do you NOT know what's to come of each output? This is where I'm totally lost. Excuse me for my ignorance...
Q3: I guess I'm also wondering if these triggers can be mathematically compiled with a plan, and not done on the fly?
Q4: And also if these circuits create a drop in voltage, post-out?
The reasons for these questions don't really have anything to do with creating beats... Instead I'm curious if these units will work for a scientific project.

[@JohnLRice]

Hi Robert, do a Google search on "Boolean logic" :-) Modules like the A-166 are like very simple computers and when certain input conditions are true it will send out it's own gate/trigger. These functions just look at two conditions, on/off (high/low) voltages, and always just send out the same, nothing in-between. They are a great way to combine multiple different gates and clocks from several sources to create rhythm patterns or to fire off events at a certain time. It's not like "mixing" where the inputs are added up.