GAMMA features dual squaring and logarithm functions to adjust the light/dark distribution of provided luma signals. Also featured are two summed outputs which mix both of the above square and log results to easily create circles and four-point stars given a Horizontal- and Vertical-triangle ramp.
Square and Log functions may be used to shape the curves of Control Voltages, adjust the gamma of luma signals and process ramps into soft-edged shapes. Each gamma shaping sub-circuits is functionally identical but patching both a horizontal and vertical triangle ramp or oscillator will result in circles and four-point stars at the bottom two outputs. Patch the Circle and Star outputs into keyers for hard edges or into faders to modulate between the shapes.
Step 6.
Now populate both diodes and both ferrite beads. Make sure that you line up the stripe n each diode with the stripe on the PCB.
Solder and clip leads.
Step 8.
No we can populate the IC’s. There are three LM6172’s and two LT1256’s, each with a notch or line indicating pin 1. This pin must be position in the top left via. Solder legs in place.
Step 12.
Finally, place each jack in place and carefully install the faceplate. Finger tighten a nut on each jack to make sure they are straight before soldering them in place. Once youre satisfied, flip the board over and solder each leg.
Step 13.
I recommend cleaning your board with a toothbrush and isopropyl alcohol before testing. Take a very careful look at each of your solder joints for any shorts or cold joints.
You may finally test out your work.
I’ll take one PCB and panel to include in the @Rik_bS Australian order, please. Also pcb and panels for a dual rectifier and switches if available, thanks.
Maybe double up on GAMMA so that you have one connected to your cadet ramps, and the other connected to your diver ramps. There are rectifier circuits in both the shapechanger and navigator, so you have some redundancy there.
That’s a tough call! They each have the same number of outputs and each half can be used in series with each other… hmm. Too bad we can’t make 1.5U modules.
Excellent recommendation! It looks like Shapechanger also has a gamma curve knob though.
It really depends on what you’re trying to patch. The Dual Rectifier’s half wave rectified outputs (Top/Bottom) are extremely useful for splitting one 0-1V signal into patchable segments. It basically splits your input signal into two segments, below and above 0.5V but adjusts them back to 0-1V range on the outputs. Two Dual Rectifiers gives you 4 rectifier stages which means you can easily split one modulation signal into 4 even segments or more with a little attenuation that can be distributed across multiple modules. I blather on about that here where we talk about how to patch animation timelines.
Two Dual Rectifiers also gives you 4 stages of full wave rectification which can give you a very dense solarization effect. If Staircase is your jam and you want to be able to have a more ‘fixed’ patch programmed version of it, this is the way to go. If you want it to be animated somewhat similarly to Staircase, just run your original signal into a VCA before putting it into the first Dual Rectifier. The first Fold output is normalled to the second input so it just takes one patch cable to have 4 stages available on the output.
I think @jwsmithwick1’s suggestion of hooking your Cadet ramps right up to a GAMMA is a good idea if you are primarily working with shape generation. You’d want to use the inverted triangle ramps if you are after circle/pincushion shapes on the bottom two outputs. It might be a little redundant plugging it into Diver since you already have expo/log ramp waveforms available as two separate banks. Putting an exponential signal into an expo converter just makes the curve that much more dramatic so it’s still useful for experimenting with.
The Gamma control on Shapechanger is effectively the two bottom outputs of the Gamma module routed into a fader so you can go Log<->Lin<->Expo or Circle<->Diamond<->Pincushion Star.
In the context of your system, I’d personally add a 3rd VEIL so you can stack 3 RGB layers. LUMA/RGB2YRGB would also be a handy one so you can pull a key source related to any arbitrary RGB pattern in your system, not just from Memory Palace, TBC2 or Chromagnon. I often take that the Y from that module, key it, and then put it into the CV input of BSO Crossfade to get deep blacks around RGB patterns that exactly matches their shape. Your RGB pattern would first go into LUMA → one side of BSO Crossfade so it requires minimal multing to patch.
Thanks @Fox, I am checking with someone else if they want some other bits from you, so if we can see if anyone else chips in here, too - I will confirm via pm in a few days
