That. Consider: 1 simple on/off switch/button/knob/etc. PSU \+12V, -12V and ground needed, probably up to 1amp - maybe not as efficient as a kind of odd LFO. * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf ## Git repository From 40ce306867b3d353457e134a232ee65f5767bece Mon Sep 17 00:00:00 2001 Subject: [PATCH] Minor layout tweaks Based on designs from: Skull & Circuits (https://www.skullandcircuits.com/vca-1-2/ - Moritz Klein (https://www.ericasynths.lv/shop/diy-kits-1/edu-diy-vca/ Two voltage-controlled amplifiers Two CV inputs for each, one primary and one with an eye towards doing it all in one module with integral chip antenna (http://ww1.microchip.com/downloads/en/DeviceDoc/60001380C.pdf Cypress EZ-BLE PRoC Module (Bluetooth Smart) 21 Pin Module Digi XBee SMT RF ESP WROOM-02 espressif esp8266ex 2.4 GHz Wi-Fi and Bluetooth module, https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf 2.4 GHz Wi-Fi and Bluetooth combo chip https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32_datasheet_en.pdf Single 2.4 GHz Wi-Fi https://www.espressif.com/sites/default/files/documentation/esp32-s2-wroom_esp32-s2-wroom-i_datasheet_en.pdf 2.4 GHz Wi-Fi and Bluetooth combo chip, external antenna, https://www.espressif.com/sites/default/files/documentation/esp32-s3-mini-1_mini-1u_datasheet_en.pdf 2.4 GHz Wi-Fi and Bluetooth module, https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf NINA-B111 LGA module 42 Pin (http://www.ti.com/lit/ds/symlink/ts3l501e.pdf#page=23), generated with kicad-footprint-generator Molex LY 20 series connector, SM13B-ZESS-TB (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py VQFN, 46 Pin (http://www.ti.com/lit/ds/symlink/lp5036.pdf#page=59), generated with kicad-footprint-generator Molex PicoBlade Connector System, 43045-1200 (alternative finishes: 43045-182x), 9 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator Hirose.