Echo state module
About the Echo state module
Echo state module is an open source PCB design by etrautmann, published on GitHub. It is a 4-layer board measuring 154 × 121 mm, with 166 components from 33 distinct parts.
Other key parts include the LM4040D10IDBZR, TL074IPWR, R-78E5.0-1.0, AD5734RBREZ-REEL7 and PCA9685PW,118. By type, the board carries 82 resistors, 29 capacitors, 27 connectors, 10 diodes, 7 ICs and 2 transistors.
It belongs with the audio designs in this gallery.
From the project
Eurorack module (KiCad 10.0) — Daisy Seed + dual AD5734R DACs + PCA9685, with vendored libraries and a fully sourced BOM
A Eurorack module designed in KiCad 10.0, built around an Electrosmith Daisy Seed with dual AD5734R quad 14-bit DACs, a PCA9685 PWM LED driver, TL074 op-amps, and 18 Thonkiconn 3.5 mm jacks on a standard shrouded Eurorack power header.
This repository is self-contained: all custom symbol and footprint libraries are vendored under libs/ and wired up through the project-local sym-lib-table / fp-lib-table with ${KIPRJMOD}-relative paths. Clone it and open echostatemodulev1.kicadpro — no global library setup required.
Main components on the Echo state module
Echo state module bill of materials (BOM)
166 components, 33 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM4040D10IDBZR LM4040DBZ-10 Texas Instruments | SOT-23 | U1 |
| 2 | TL074IPWR TL074 Texas Instruments | TSSOP-14_4.4x5mm_P0.65mm | U2, U7 |
| 1 | R-78E5.0-1.0 Recom Power | Converter_DCDC_RECOM_R-78E-0.5_THT | U3 |
| 2 | AD5734RBREZ-REEL7 Analog Devices | HTSSOP-24-1EP_4.4x7.8mm_P0.65mm_EP3.4x7.8mm_Mask2.44x3.42mm | U5, U8 |
| 1 | PCA9685PW,118 PCA9685 NXP Semiconductors | TSSOP-28_4.4x9.7mm_Pitch0.65mm | U9 |
| 1 | ELECTROSMITH_DAISY_SEED_REV4 Electrosmith_Daisy_Seed_Rev4 Electrosmith | Electrosmith_Daisy_Seed | A1 |
| 2 | MBT3904DW1T1G MBT3904DW1 ON Semiconductor | SOT-363_SC-70-6 | Q1, Q2 |
| 18 | WQP-WQP518MA 3.5mm_Mono_Switched_sm Wenzhou QingPu Electronics Co | EighthInch_PJ398SM | J1, J2, J3, J4, J5, J6, J7, J8 +10 |
| 1 | LL1007-1 (2*8 HITEMP) Eurorack_Power_16pin_Shrouded Cixi LanLing | Pins_2x08_2.54mm_TH_EurorackPower_Shrouded | J9 |
| 4 | PRPC020SAAN-RC Conn_01x20_Pin Sullins Connector Solutions | PinHeader_1x20_P2.54mm_Vertical | J25, J28, J36, J38 |
| 4 | PPTC201LFBN-RC Conn_01x20_Socket Sullins Connector Solutions | PinHeader_1x20_P2.54mm_Vertical | J26, J27, J35, J37 |
| 4 | RV09BCF-40-25F-B10K-0C7 9mm_CtrDet_10k_DShaft Alpha Taiwan | Pot_9mm_Dshaft_Det | POT1, POT2, POT3, POT4 |
| 2 | A-3565 SW_DPDT_x2 Tayda | SW_Push_2P2T_ tayda_A3565_7x7mm_switch | SW1, SW2 |
| 2 | B5817WS-TP 1N5817 Micro Commercial Components | D_SOD-323F_Handsoldering | D1, D2 |
| 8 | AAA3528ESGCT LED_Dual_KAKA Kingbright | LED_Kingbright_AAA3528ESGCT | D4, D5, D6, D7, D8, D9, D10, D11 |
| 2 | MI0603K300R-10 FerriteBead_0603_1.5A Laird | R_0603 | L1, L2 |
| 14 | 0603YC104KAT2A 100nF_0603_16V AVX Corporation | C_0603 | C1, C7, C8, C12, C13, C17, C18, C20 +6 |
| 4 | 06035C103KAT2A 10nF_0603_25V AVX Corporation | C_0603 | C2, C3, C9, C10 |
| 8 | CC1206KKX5R8BB106 10uF_1206_25V Yaego | C_1206 | C4, C5, C14, C15, C19, C26, C27, C30 |
| 2 | GRM21BR61E226ME44L 22uF_0805_25V Murata | C_0805 | C6, C11 |
Show 13 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | T491B476K010AT 47uF KEMET | CP_EIA-3528-12_Kemet-T_HandSolder | C16 |
| 11 | RC0603FR-0710KL 10k_0603 Yageo | R_0603 | R1, R14, R15, R29, R30, R31, R34, R35 +3 |
| 4 | RC0603FR-0716K5L 16.5k_0603 Yageo | R_0603 | R2, R3, R4, R13 |
| 4 | RC0603FR-07470KL 470k_0603 Yageo | R_0603 | R5, R18, R21, R76 |
| 18 | RC0603FR-07100KL 100k_0603 Yageo | R_0603 | R6, R7, R8, R9, R12, R19, R20, R22 +10 |
| 4 | RC0603FR-071ML 1M_0603 Yageo | R_0603 | R10, R11, R26, R27 |
| 16 | RC0603FR-071KL 1k_0603 Yageo | R_0603 | R16, R17, R32, R33, R49, R66, R67, R68 +8 |
| 1 | RC0603FR-072K2L 2.2k_0603 Yageo | R_0603 | R28 |
| 2 | RC0603FR-0733KL 33k_0603 Yageo | R_0603 | R36, R37 |
| 2 | RC0603FR-0749K9L 49.9k_0603 Yageo | R_0603 | R38, R39 |
| 2 | RC0603FR-07470RL 470Ω_0603 Yageo | R_0603 | R44, R45 |
| 2 | RC0603FR-074K7L 4.7k_0603 Yageo | R_0603 | R47, R48 |
| 16 | RC0603FR-07150RL 150Ω_0603 Yageo | R_0603 | R50, R51, R52, R53, R54, R55, R56, R57 +8 |
Echo state module design files
The KiCad project lives in the etrautmann/echo-state-module repository on GitHub; these links point at the commit this page was built from.
Echo state module: common questions
How big is the Echo state module?
The Echo state module measures 154 × 121 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Echo state module?
166 components, from 33 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Echo state module design files?
From the etrautmann/echo-state-module repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Echo state module design in my own project?
The repository has no license, so all rights stay with etrautmann. Use it as a reference, and ask the author before reusing the design.
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