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STD margarita prototype

License: CC-BY-NC-SA 3.0

Mode: Editors' pick

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Update time: 2022-07-09 20:39:50
Creation time: 2021-10-26 11:04:06
Description

Margarita Prototype is originally a rework of the kxmx_bluemchen and kxmx_nehcmeulb. Based on a Daisy Seed.
It accommodates 2 audio inputs, 2 audio outputs, 6 knobs with CV (with attenuation), 2 gate inputs, 1 CV out, MIDI input, OLED screen and a push encoder an expander is planned to add more controls, more audio i/o and some. Speaks Eurorack.


This is a work in progress. Use at your own risk.

Motivations: learning electronics and MCU programming so i can make weird music.
Making this stuff affordable; I'm trying to use JLCPCB's Basic Parts when possible (of course, that doesn't always include ICs) to maintain the price to a minimum.

This is a work in progress. It started out as a quick mod from kxmx's design but it triggered a cascade of ideas that will have me squeeze the nectar out of the Daisy Seed to get basically as many controls and ins and outs as possible from this cute little board.

Design Drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 100uF C1,C18 CAP-TH_BD8.0-P3.50-D0.6-FD 2
2 100nF C2,C4,C11,C12,C13,C19,C26,C28,C32,C33,C34,C35,C36 C0603 13
3 10uF C3,C20,C23,C24,C5 C1206 5
4 560pF C9,C10,C22,C27 C0603 4
5 47pF C14,C21,C25,C37 C0603 4
6 1N4148WS T4 D2 SOD-323_L1.8-W1.3-LS2.5-RD 1
7 B5819W_C8598 D3,D4 SOD-123_L2.7-W1.6-LS3.7-RD-1 2
8 Header-Male-2.54_2x3 J7 HDR-TH_6P-P2.54-V-M-R2-C3-S2.54-1 1
9 Eurorack Power 16 Pin IDC J8 MULTICOMP_MC9A12-1634_2X08X2.54MM_STRAIGHT_EURORACK 1
10 2.2uH L1,L2 L0603 2
11 Header-Female-2.54_1x13 P2 HDR-TH_13P-P2.54-V-F 1
12 2n3904S-RTK/PS_C18536 Q1,Q2 SOT-23-3_L2.9-W1.3-P1.90-LS2.4-TR 2
13 220 R1 R0603 1
14 33K R4 R0603 1
15 33K R7,R8,R9,R10,R11,R13,R15,R16,R70,R71,R75,R76,R23 R0402 13
16 100K R12,R17,R32,R33,R66,R67,R72,R73 R0402 8
17 200K R14,R18,R68,R69,R74,R77 R0402 6
18 49.9K R22 R0402 1
19 10K R24,R31,R46,R52,R62,R80 R0603 6
20 1K R25,R30,R43,R48,R79,R81 R0603 6
21 100K R26,R29,R44,R50,R45,R47,R49,R51,R55,R61,R65,R90,R91,R92 R0603 14
22 1M R27,R28 R0603 2
23 2.2K R53 R0603 1
24 TL074CPWR U2,U4 TSSOP-14_L5.0-W4.4-P0.65-LS6.4-BL 2
25 B2405S-1WR2 U6 PWRM-TH_B2405S-1WR2 1
26 LM4040C10IDBZR U7 SOT-23-3_L3.0-W1.7-P0.95-LS2.9-BR 1
27 TLP2362(TPL,E(T U8 OPTO-SMD-5_L3.7-W4.6-P1.27-LS7.0-BR 1
28 MCP6004T-E/SL U9 SOIC-14_L8.7-W3.9-P1.27-LS6.0-BL 1
29 TL072CDT U18 SOIC-8_L5.0-W4.0-P1.27-LS6.0-BL 1
30 MCP6002T-I/SN U19 SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL 1
31 PJ301M-12 JK1,JK2,JK3,JK4,JK5,JK6,JK8,JK9,JK11,JK12,JK13,JK14,JK16 PJ301M-12 13
32 PJ366ST JK7 PJ366ST 1
33 0.49 OLED SSD1306 P1 0.49_OLED 1
34 47K R2,R3,R19,R20,R21 R0603 5
35 100 R5,R6,R34,R35,R36,R37 R0402 6
36 PEC11R-4220F-S0024 SW1 BOURNS PEC11R ROTARY ENCODER COMPACT 1
37 ALPHA 9MM VERTICAL U1,U11,U12,U13,U15,U16 ALPHA9MM 6
38 PM254-1-20-Z-8.5 U5,U10 HDR-TH_20P-P2.54-V-F 2
39 VERTICAL SD CARD SOCKET PJS008U-3000-0 U14 PJS008U-3000-0 1

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