# Pen audio ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** teckno - **Created:** 10/12/2024 - **Last Updated:** 10/12/2024 - **Visibility:** Public ## Key Components ### U1 — [ESP32-WROOM-32D](https://www.flux.ai/vasyl/esp32-wroom-32d~7py.md) - Manufacturer Name: Espressif Systems - Manufacturer Part Number: ESP32-WROOM-32D - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf - Part Type: Microcontroller **Pins:** - 3.3V [pin 2] - AGND [pin 39] - CLK [pin 20] - CMD [pin 19] - EN [pin 3] - GND [pin 38] - GND [pin 15] - GND [pin 1] - IO0 [pin 25] - IO12 [pin 14] - IO13 [pin 16] - IO14 [pin 13] - IO15 [pin 23] - IO16 [pin 27] - IO17 [pin 28] - IO18 [pin 30] - IO19 [pin 31] - IO2 [pin 24] - IO21 [pin 33] - IO22 [pin 36] - IO23 [pin 37] - IO25 [pin 10] - IO26 [pin 11] - IO27 [pin 12] - IO32 [pin 8] - IO33 [pin 9] - IO34 [pin 6] - IO35 [pin 7] - IO4 [pin 26] - IO5 [pin 29] - NC [pin 32] - RXD0 [pin 34] - SD0 [pin 21] - SD1 [pin 22] - SD2 [pin 17] - SD3 [pin 18] - TXD0 [pin 35] - VN [pin 5] - VP [pin 4] ### U2 — [MP7731DF-LF-P](https://www.flux.ai/monolithicpower/mp7731df-lf-p~ytg.md) - Product Info Url: https://www.monolithicpower.com/en/catalog/product/view/id/1132?utm_source=ultralibrarian&utm_medium=component_search&utm_campaign=listing - Manufacturer Name: Monolithic Power Systems - Product Image Url: https://www.monolithicpower.com/pub/media/catalog/product/M/P/MP7731_1132_1.jpg - Package or Case Code: TSSOP20F_MP7731_MNP - Manufacturer Part Number: MP7731DF-LF-P - Datasheet URL: https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP7731 **Pins:** - AGND1 [pin 4] - AGND2 [pin 9] - BS1 [pin 17] - BS2 [pin 12] - EN1 [pin 6] - EN2 [pin 10] - EPAD [pin 21] - NC [pin 16] - NC [pin 11] - NC [pin 5] - NC [pin 1] - NIN1 [pin 3] - NIN2 [pin 7] - PGND1 [pin 20] - PGND2 [pin 15] - PIN1 [pin 2] - PIN2 [pin 8] - SW1 [pin 19] - SW2 [pin 14] - VDD1 [pin 18] - VDD2 [pin 13] ### U3 — [MT41K256M16TW-107:P](https://www.flux.ai/adrian95/mt41k256m16tw-107p~j2i.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Manufacturer Name: Micron Technology Inc. - Manufacturer Part Number: MT41K256M16TW-107:P - Datasheet URL: https://www.micron.com/-/media/client/global/documents/products/data-sheet/dram/ddr3/4gb_ddr3l.pdf **Pins:** - A0 [pin N3] - A1 [pin P7] - A10/AP [pin L7] - A11 [pin R7] - A12/BC# [pin N7] - A13 [pin T3] - A14 [pin T7] - A2 [pin P3] - A3 [pin N2] - A4 [pin P8] - A5 [pin P2] - A6 [pin R8] - A7 [pin R2] - A8 [pin T8] - A9 [pin R3] - BA0 [pin M2] - BA1 [pin N8] - BA2 [pin M3] - CAS# [pin K3] - CK [pin J7] - CK# [pin K7] - CKE [pin K9] - CS# [pin L2] - DQ0 [pin E3] - DQ1 [pin F7] - DQ10 [pin C8] - DQ11 [pin C2] - DQ12 [pin A7] - DQ13 [pin A2] - DQ14 [pin B8] - DQ15 [pin A3] - DQ2 [pin F2] - DQ3 [pin F8] - DQ4 [pin H3] - DQ5 [pin H8] - DQ6 [pin G2] - DQ7 [pin H7] - DQ8 [pin D7] - DQ9 [pin C3] - LDM [pin E7] - LDQS [pin F3] - LDQS# [pin G3] - NC_1 [pin J1] - NC_2 [pin J9] - NC_3 [pin L1] - NC_4 [pin L9] - NC_5 [pin M7] - ODT [pin K1] - RAS# [pin J3] - RESET# [pin T2] - UDM [pin D3] - UDQS [pin C7] - UDQS# [pin B7] - VDD_1 [pin B2] - VDD_2 [pin D9] - VDD_3 [pin G7] - VDD_4 [pin K2] - VDD_5 [pin K8] - VDD_6 [pin N1] - VDD_7 [pin N9] - VDD_8 [pin R1] - VDD_9 [pin R9] - VDDQ_1 [pin A1] - VDDQ_2 [pin A8] - VDDQ_3 [pin C1] - VDDQ_4 [pin C9] - VDDQ_5 [pin D2] - VDDQ_6 [pin E9] - VDDQ_7 [pin F1] - VDDQ_8 [pin H2] - VDDQ_9 [pin H9] - VREFCA [pin M8] - VREFDQ [pin H1] - VSS_1 [pin A9] - VSS_10 [pin P9] - VSS_11 [pin T1] - VSS_12 [pin T9] - VSS_2 [pin B3] - VSS_3 [pin E1] - VSS_4 [pin G8] - VSS_5 [pin J2] - VSS_6 [pin J8] - VSS_7 [pin M1] - VSS_8 [pin M9] - VSS_9 [pin P1] - VSSQ_1 [pin B1] - VSSQ_2 [pin B9] - VSSQ_3 [pin D1] - VSSQ_4 [pin D8] - VSSQ_5 [pin E2] - VSSQ_6 [pin E8] - VSSQ_7 [pin F9] - VSSQ_8 [pin G1] - VSSQ_9 [pin G9] - WE# [pin L3] - ZQ [pin L8] ### V1 — [DC Supply](https://www.flux.ai/jharwinbarrozo/dc-supply~35.md) - Voltage: 5V **Pins:** - ANODE - CATHODE *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/teckno/pen-audio~wv](https://www.flux.ai/teckno/pen-audio~wv).* --- *Generated from [https://www.flux.ai/teckno/pen-audio~wv](https://www.flux.ai/teckno/pen-audio~wv)*