# Selected Brown Sonic Screwdriver ## Description Brown Sonic Screwdriver Prototype Development ## Project Details - **Owner:** ryanf - **Created:** 10/5/2025 - **Last Updated:** 10/5/2025 - **Visibility:** Public - **System architecture:** The system architecture features a USB-powered 3.3 V power tree: VBUS (5 V from USB) is routed through the VSYS regulator to produce a stable 3V3 rail. The MCU core runs at 3.3 V and serves as the primary system controller. An external SPI flash interface provides non-volatile storage connected directly to the MCU’s SPI pins. USB data lines and power input are protected by ESD diodes and reverse/over-voltage protection circuitry. A SWD debug header exposes SWDIO, SWCLK, RESET, 3.3 V, and GND for programming and debugging. A separate user I/O header routes key MCU GPIO, UART, SPI, and I²C signals for peripheral expansion. - **Power Requirements:** USB - **Operating Voltage:** 3.3V ## Key Components ### U1 — [RP2040](https://www.flux.ai/jecstronic/rp2040.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Raspberry Pi - Part Type: Integrated Circuit - Manufacturer Part Number: SC0914(7) - Datasheet URL: https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf **Pins:** - ADC_AVDD [pin 43] - DVDD [pin 50] - DVDD [pin 23] - GND [pin 57] - GPIO0 [pin 2] - GPIO1 [pin 3] - GPIO10 [pin 13] - GPIO11 [pin 14] - GPIO12 [pin 15] - GPIO13 [pin 16] - GPIO14 [pin 17] - GPIO15 [pin 18] - GPIO16 [pin 27] - GPIO17 [pin 28] - GPIO18 [pin 29] - GPIO19 [pin 30] - GPIO2 [pin 4] - GPIO20 [pin 31] - GPIO21 [pin 32] - GPIO22 [pin 34] - GPIO23 [pin 35] - GPIO24 [pin 36] - GPIO25 [pin 37] - GPIO26/ADC0 [pin 38] - GPIO27/ADC1 [pin 39] - GPIO28/ADC2 [pin 40] - GPIO29/ADC3 [pin 41] - GPIO3 [pin 5] - GPIO4 [pin 6] - GPIO5 [pin 7] - GPIO6 [pin 8] - GPIO7 [pin 9] - GPIO8 [pin 11] - GPIO9 [pin 12] - IOVDD [pin 49] - IOVDD [pin 42] - IOVDD [pin 10] - IOVDD [pin 1] - IOVDD [pin 22] - IOVDD [pin 33] - QSPI_CSN [pin 56] - QSPI_SCLK [pin 52] - QSPI_SD0 [pin 53] - QSPI_SD1 [pin 55] - QSPI_SD2 [pin 54] - QSPI_SD3 [pin 51] - RUN [pin 26] - SWCLK [pin 24] - SWD [pin 25] - TESTEN [pin 19] - USB_DM [pin 46] - USB_DP [pin 47] - USB_VDD [pin 48] - VREG_VIN [pin 44] - VREG_VOUT [pin 45] - XIN [pin 20] - XOUT [pin 21] ### U2 — [W25Q16JVSSIQ](https://www.flux.ai/vasy_skral/w25q16jvssiq.md) - Purchase Url: https://www.digikey.com/en/products/detail/winbond-electronics/W25Q16JVSSIQ/6193769 - Manufacturer Part Number: W25Q16JVSSIQ - Price: 0.50$ - DataSheet: http://www.winbond.com/resource-files/w25q16jv%20spi%20revg%2003222018%20plus.pdf **Pins:** - ~CS - ~HOLD/RESET~(IO3) - ~WP~(IO2) - CLK - DI(IO0) - DO(IO1) - GND - VCC ### Y1 — [ABM8-272-T3](https://www.flux.ai/vasy_skral/abm8-272-t3.md) - Part Type: Oscillator - Manufacturer Part Number: ABM8-272-T3 - Frequency: 12MHz - Manufacturer Name: Abracon LLC - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/6128/ABM8-272-T3.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] - P3 [pin 3] - P4 [pin 4] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ryanf/selected-brown-sonic-screwdriver](https://www.flux.ai/ryanf/selected-brown-sonic-screwdriver).* --- *Generated from [https://www.flux.ai/ryanf/selected-brown-sonic-screwdriver](https://www.flux.ai/ryanf/selected-brown-sonic-screwdriver)*