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====== Envelope Follower ====== based on Harry Bissel\\ a SMD Variant, ready for Pick and Place\\ {{:phatline:ENV-Follower-3D-rotate.png?500|}}\\ --shown 2 identical boards on one pcb - to save money.. ===== Features ===== * audio in * Envelope out * Gate out + Gate Threshold-Poti\\ * Full-wave rectifier\\ * 3 identical Peakdetectors which are Reseted from a "stepper"\\ * a Osciallator with tunable Frequency to drive the stepper\\ * Smoothingcap set via Jumper\\ * Debugging Jumpers\\ * PTC and Diode Polarity Protection on the Supply-side\\ ====== Hardware Requirements ====== * This Device i build as input module for my [[CV1]] Project, but can be used for other things too\\ * Soldering Iron - with a Dip that can Handle SMD-Parts, Wires, solder Paste...\\ * Eurorack Power Source +-12V!\\ ====== Building ====== The Design is optimized for Pick and Place most SMD Parts are on the Top-PCB\\ i ordered 5 PCBs from JLCPCP with almost all SMD Parts presoldered(except 2 SOIC chips PTC and Protection Diode) \\ now waiting for Presoldered PCBs\\ {{:phatline:ENV-Follower-PCB.png?500|}}\\ ==== Frontpanel ==== FIXME - Eurorack Alu-Plate\\ ===== BOM LCSC===== these are the parts which are presoldered by the Pick and Place Machine, these are "Basic" Parts\\ the values with a "x" in it, like Dx1 --- are because there are 2 Identical Parts on 1 PCB, because there 2PCBs on 1PCB.... so Dx1 is the same like D1, but its position is on the second board.\\ ^Value^Designator^Footprint^LCSC Part Number^Library-Type^ |100nF|C1,CU1,CI1,CIx1,CUx1,Cx1,CU2,CI2,CIx2,CUx2,CP3,CI3,CIx3,CPx3,CP4,CI4,CIx4,CPx4,C4,Cx4,CI5,CIx5,CI6,CIx6,CI7,CIx7,CI8,CIx8,CI9,CIx9,CI10,CIx10|1206|C24497| |1nF|C102,Cx102,C103,Cx103,C202,Cx202,C203,Cx203,C302,Cx302,C303,Cx303|1206|C35216| |47uF|CP1,CPx1,CP2,CPx2|1206|C96123| |1N4148W|D1,Dx1,D2,Dx2,D7,Dx7,D8,Dx8,D103,Dx103,D104,Dx104,D105,Dx105,D106,Dx106,D203,Dx203,D204,Dx204,D205,Dx205,D206,Dx206,D303,Dx303,D304,Dx304,D305,Dx305,D306,Dx306|SOD123|C81598| |TL072|IC1,ICx1,IC2,ICx2,IC3,ICx3,IC4,ICx4,IC5,ICx5|SOIC-8|C6961| |2N3904|Q101,Qx101,Q201,Qx201,Q301,Qx301|SOT-23|C20526| |100K|R12,Rx12,R13,Rx13,R17,Rx17,R18,Rx18,R108,Rx108,R110,Rx110,R208,Rx208,R210,Rx210,R308,Rx308,R310,Rx310|1206|C17900| |1K|R1,Rx1,R8,Rx8,R11,Rx11,R20,Rx20,Ra21,Rax21|1206|C4410| |2K|R19,Rx19|1206|C17944| |10K|R3,Rx3,R4,Rx4,R5,Rx5,R6,Rx6,R7,Rx7,R15,Rx15,R16,Rx16,R109,Rx109,R209,Rx209,R309,Rx309|1206|C17902| |220|Rb21,Rbx21|1206|C17958|\\ when making 10Boards...a total of **42,44€** presoledered on the PCBsincl Shipping and Import-Taxes\\ ===== BOM Mouser===== These are the parts which has to be handsoldered\\ [[https://www.mouser.com/tools/part-list-import.aspx|copy list below, and paste in this link, you will need to order the project 2 times since 2PCBs are on 1PCB]]\\ 583-FM4002|2\\ 490-SJ1-3535NG-GR|3\\ 523-G821EU210AAL10Y|1\\ 650-MINISMDC014F-2|2\\ 771-HEF40106BTD-T|1\\ 595-CD4017BM|1\\ 652-PTV09A-3015FB103|1\\ 652-PTV09A3020FB104|1\\ \\ for prototyping i ordered:\\ **490-SJ1-3535NG-GR** instead of **490-SJ1-3535NG** because it is out of stock - so **GREEN sockets** for now!\\ \\ when making 10PCBs this make a total of ** 69,83€** incl Shipping/VAT which is free above 50€!\\ There are 2 SOICs that have to get Handsoldered, i have done this before and its easy!\\ {{:phatline:env-follower-handsolder.png?500|}}\\ the actual Picture is this {{:phatline:env-follower-3d-buttom.png?500|}}\\ ===== Overall Material Costs ===== PCB:**42,44€ +** MouserParts:** 69,83** = 111,46€ **/ 10** PCBs **= 11,14€ a PCB**\\ (where half off work is done by pick and place machine!)\\ ===== Kicad Files & Production Files ===== V1. from 05.01.2021{{:phatline:env-follower.zip|}} \\ Shematic, Board, Gerber, Pick and Place and Booms, ready for Pick and Place!\\ ---at the moment untestet, since i order the project just now!\\ as Example what you see if you got thru the ordering process:\\ {{:phatline:ENV-Follower-JLPCB-Job.png?700|}}\\ {{:phatline:ENV-Follower-JLPCB-Invoice.png?700|}}\\ ===== Shematic ===== {{:phatline:ENV-Follower-Shematic.png?800|}}\\ ===== To Do ===== experiment with the Smooting CAP, i already implimented a Jumper which add a second Capacitor to "double" the capacity... i took 220+220nF, but maybe it is better to use 100+220nF?\\ experiment with the Frequency Pot which is a lin10K + 2K Serial Resistor which gives a range of 2K-12K - really dont know what value spectrum we need here!\\ adding some Jumpers to break the circuit for debugging or measurement\\ frontplate, Debugging First Version\\ \\ In order to Debug and Test and finetune the board i placed some **Headers/Jumpers:**\\ {{:phatline:ENV-Follower-3D-top.png?800|}}\\ ===== Resources ===== [[https://www.muffwiggler.com/forum/viewtopic.php?f=17&t=109067#p1511975|muffwiggler-topic]]\\ [[https://www.muffwiggler.com/forum/userpix2/10917_6768_bissell_ef_schematics_11_1.jpg|modified-shematic]]\\ [[https://www.muffwiggler.com/forum/userpix2/10917_harrybisselenvfollow_5.jpg|THT-PCB]]\\ [[https://www.muffwiggler.com/forum/userpix2/10917_bissel_1.jpg|THT-PCB-Shematic-BUT Attention it is not correct!]]\\ [[https://www.muffwiggler.com/forum/userpix2/10917_bom_1.jpg|THT-PCB-BOM]]\\ [[https://www.muffwiggler.com/forum/userpix2/32564_scr01_2.png|Haralds-Hi-Clock-Measurements]]\\ I give this links because it is the source: but i cant recommend that forum! ====== Community users working on it ====== * **[[Phatline]]** = Programming, Documentation...\\ Just let a Private message on the forum to user already involved.\\ I have ProtoBoards here - i test one, and if it works, i can share them for Beta Testing-if you pay the postage\\
