# Wild Sapphire Carbonite Freezer ## Description Board Layout Draft – Component Placement Pending Review of Size & Mounting ## Project Details - **Owner:** timix20 - **Created:** 12/16/2025 - **Last Updated:** 1/10/2026 - **Visibility:** Public - **Operating Voltage:** 5V - **License:** https://creativecommons.org/licenses/by/4.0/ - **Reference Design URL:** https://eepower.com/circuit-collections/pir-sensor-555-timer-counter-using-cd4026-and-7-segment-display/ - **Board Dimensions:** 100.0 mm x 70.0 mm - **Power Requirements:** Battery - **Human Interface:** Display - **Domain:** Consumer Electronics - **System Architecture:** flowchart TD PIRSensor[PIR Sensor] NPN[NPN Transistor Interface] NE555[NE555 Monostable] CD4026[CD4026B Counter] Display[7-Segment Display] ResetBtn[Pushbutton Reset] PIRSensor --> NPN NPN --> NE555 NE555 --> CD4026 CD4026 --> Display ResetBtn -->|Manual Reset| CD4026 - **PCB Stackup:** 4 Layer with Inner Planes (VCC = L2, GND = L3) - **Manufacturing Quantity Target:** 5 - **Connectivity:** USB - **Stars:** 1 ## Key Components ### D9 — [10mm CC Yellow 7 Segment Display](https://www.flux.ai/corynrobinson/10mm-cc-yellow-7-segment-display.md) - Manufacturer Part Number: SC39-11SYKWA - Manufacturer Name: Kingbright - Forward Voltage: 2V - Purchase Url: https://www.digikey.com/en/products/detail/kingbright/SC39-11SYKWA/4098423 - Current: 20mA - Part Type: LED - Datasheet URL: https://www.kingbrightusa.com/images/catalog/SPEC/SC39-11SYKWA.pdf **Pins:** - a [pin 10] - b [pin 9] - c [pin 7] - Cathode1 [pin 3] - Cathode2 [pin 8] - d [pin 5] - dp [pin 6] - e [pin 4] - f [pin 2] - g [pin 1] ### SW1 — [Push Button B3FS-1050P](https://www.flux.ai/jharwinbarrozo/push-button-b3fs-1050p.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1809271215_Omron-Electronics-B3FS-1050P_C231326.pdf - Part Type: Switch - Manufacturer Part Number: B3FS-1050P - Manufacturer Name: OMRON **Pins:** - P1 [pin 1] - P2 [pin 3] ### U1 — [CD4026BE](https://www.flux.ai/adrian95/cd4026be.md) - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fcd4026b - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments - Manufacturer Part Number: CD4026BE **Pins:** - A [pin 10] - B [pin 12] - C [pin 13] - CARRY_OUT [pin 5] - CLK [pin 1] - CLK_INHIBIT [pin 2] - D [pin 9] - DISPLAY_EN_IN [pin 3] - DISPLAY_EN_OUT [pin 4] - E [pin 11] - F [pin 6] - G [pin 7] - RESET [pin 15] - UNGATED_C_SEGMENT_OUT [pin 14] - VDD [pin 16] - VSS [pin 8] ### U2 — [NE555P - 518340](https://www.flux.ai/kicad-part-library/ne555p-518340.md) - Datasheet URL: http://www.ti.com/lit/ds/symlink/ne555.pdf - Manufacturer Part Number: NE555P - Package or Case Code: DIP-8_W7.62mm - Manufacturer Name: Texas Instruments Inc. **Pins:** - CV [pin 5] - DIS [pin 7] - GND [pin 1] - Q [pin 3] - R [pin 4] - THR [pin 6] - TR [pin 2] - VCC [pin 8] ### U3 — [PIR203A-D0](https://www.flux.ai/lcsc/pir203a-d0.md) - Manufacturer Name: NEWOPTO(鑫永诚光电) - Part Type: Human Body Sensing Sensor - Manufacturer Part Number: PIR203A-D0 - Package or Case Code: TO-5-3_BD9.1-P2.54_PIR203A-D0 - LCSC Part Number: C2887900 **Pins:** - D [pin 1] - G [pin 3] - S [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/timix20/wild-sapphire-carbonite-freezer](https://www.flux.ai/timix20/wild-sapphire-carbonite-freezer).* --- *Generated from [https://www.flux.ai/timix20/wild-sapphire-carbonite-freezer](https://www.flux.ai/timix20/wild-sapphire-carbonite-freezer)*