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modules:bools [2017/08/24 21:09]
flab created
modules:bools [2018/04/15 21:13] (current)
olivierwah Add informations on BOOLs page
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-mouser cart:  http://​www.mouser.com/​ProjectManager/​ProjectDetail.aspx?​AccessID=0D929F5ACF ​+====== BOOLs ====== 
 + 
 + 
 +==== Description/​Usage ==== 
 + 
 +{{:​modules::​nlc_bools_panel-800x800.jpg?​170|BOOLs}} 
 + 
 +This module is like a hybrid between the NLC quad logic module and the Sauce of Unce. There are 4 inputs driving chained logic gates (you can choose what logic you want - OR, NOR, AND, NAND, XOR or XNOR by the chip installed). There are 4 gate outputs giving the boolean logic result of the signals on inputs 1&2, 2&3, 3&4 and 4&1. A resistor ladder network gives the stepped output based on what these 4 outputs are doing. From this a S&H circuit with a slew processor gives a smooth output. 
 + 
 + 
 +==== Specs ==== 
 + 
 +HP: 8 
 + 
 +==== Inputs ==== 
 + 
 + 
 +IN1: any signal crossing 1V \\ 
 +IN2: any signal crossing 1V \\ 
 +IN3: any signal crossing 1V \\ 
 +IN4: any signal crossing 1V \\ 
 +SAMPLE : tigger, gate or CV \\ 
 + 
 +==== Outputs ==== 
 + 
 + 
 +1:2boolean logic resultat of IN1 and IN2  \\ 
 +2:3: boolean logic resultat of IN2 and IN3  \\ 
 +3:4: boolean logic resultat of IN3 and IN4  \\ 
 +4:1: boolean logic resultat of IN4 and IN1  \\ 
 +SLEW: smooth output derived from outputs (you can control the slew via pot) \\ 
 +STEP: stepped output derived from outputs 
 + 
 +==== DIY ==== 
 + 
 +Documents for BOM & Build : 
 + 
 +http://​www.sdiy.org/​pinky/​data/​BOOLs%20BOM%20guide%20vers1.pdf 
 + 
 +Link to Mouser Cart 
 + 
 +http://​www.mouser.com/​ProjectManager/​ProjectDetail.aspx?​AccessID=0D929F5ACF ​ 
 + 
 +==== Tips/Tricks ==== 
 + 
 +Use the module to process audio signals and feed the outputs back into other inputs. 
 +The BOOLs can be used as an envelope generator. Choose an input to determine the height (1 = low, 4 = high), set the 
 +slope with the Slew pot, feed the S&H input with various signals to vary the envelope shape. 
 + 
 +Suitable chips are : 
 + 
 +  * 4001 NOR 
 +  * 4011 NAND 
 +  * 4071 OR 
 +  * 4081 AND 
 +  * 4077 XNOR 
 +  * 4030 or 4070 XOR 
 + 
 +For me, the OR, XNOR & XOR chips are the most interesting. What makes this circuit a little different is the way the inputs and outputs are related. 
 +There are four inputs, call them A, B, C & D, say we have an XOR chip installed and signals on all four inputs : 
 + 
 +  * Output 1 will be A xor B 
 +  * Output 2 will be B xor C 
 +  * Output 3 will be C xor D 
 +  * Output 4 will be D xor A 
 + 
 +The input signals can be pretty much anything that crosses 1.1V. Outputs will be 5V. 
 +Audio rate signals are fine; XOR chips give a crude but useful ring modulation effect. 
 + 
 + 
 +==== Examples (Audio/​Video) ==== 
 + 
 +https://​www.youtube.com/​watch?​v=n4hOQYswQmQ
modules/bools.txt · Last modified: 2018/04/15 21:13 by olivierwah