# 9V 555 LED Blinker ## Description Hand-solderable 9V 555 timer circuit that blinks a red LED once per second through an on/off switch. ## Project Details - **Owner:** nico - **Created:** 5/11/2026 - **Last Updated:** 5/13/2026 - **Visibility:** Public ## Key Components ### BT1 — [BH9VPC](https://www.flux.ai/adrian95/bh9vpc.md) - Role: Power Input - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Battery Holder - Manufacturer Part Number: BH9VPC - Role Details: 9V block battery source - Manufacturer Name: MPD - Datasheet URL: https://www.memoryprotectiondevices.com/datasheets/BH9VPC/BH9VPC-datasheet.pdf **Pins:** - - [pin -] - + [pin +] ### D1 — [LTL-307EE](https://www.flux.ai/vasy_skral/ltl-307ee~a2.md) - Part Type: LED - Role: Indicator - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1153/LTL-307EE.pdf - Manufacturer Name: Lite-On Inc. - Role Details: Red LED blink output driven from U1 OUT through current-limiting resistor - Manufacturer Part Number: LTL-307EE **Pins:** - A [pin 2] - K [pin 1] ### SW1 — [AS11CH](https://www.flux.ai/adrian95/as11ch~i2s.md) - Role: Power Switch - Datasheet URL: https://www.nkkswitches.com/pdf/Aslides.pdf - Manufacturer Part Number: AS11CH - Part Type: Switch - Role Details: Connects 9V battery positive to switched VCC rail **Pins:** - P1 - P3 ### U1 — [NE555P](https://www.flux.ai/kicad-part-library/ne555p~vhf.md) - Role: Signal Generation - Role Details: Astable oscillator; RA=47kΩ, RB=47kΩ, C=10uF gives ~1.02 Hz from TI NE555 equation - Package or Case Code: DIP-8_W7.62mm - Part Type: Precision Timer - Manufacturer Name: Texas Instruments Inc. - Datasheet URL: http://www.ti.com/lit/ds/symlink/ne555.pdf - Domain: Consumer Electronics - Manufacturer Part Number: NE555P - Operating Voltage: 9V **Pins:** - CONT [pin 5] - DISCH [pin 7] - GND [pin 1] - OUT [pin 3] - RESET [pin 4] - THRES [pin 6] - TRIG [pin 2] - VCC [pin 8] ### U2 — GW1NZ-1 CS16 - Part Type: Integrated Circuits - Datasheet URL: https://cdn.flux.ai/project/chat/attachments/DS841E-52e3e1a4-d4f8-48d1-a7f2-34140c455c8c.pdf - Manufacturer Part Number: GW1NZ-1 CS16 - Package or Case Code: CS16 - Voltage Rating: 1.2V - Role: FPGA - Role Details: Gowin GW1NZ-1 LittleBee non-volatile FPGA in WLCSP16/CS16 package from DS841E PDF - Manufacturer Name: Guangdong Gowin Semiconductor Corporation **Pins:** - IOR5A/GCLKT_2/RPLL_T_in [pin D3] - IOR7A/GCLKT_3/SSPI_CS_N/D0 [pin D1] - IOR8A/SO/D1 [pin D2] - IOR9A/SI/D2 [pin C1] - IOT14A/MODE0 [pin B3] - IOT15B [pin A2] - IOT7A/TMS/SPMI_SDATA [pin C4] - IOT7B/TCK/SPMI_EN/VCCEN [pin B4] - IOT8A/TDI/SPMI_SCLK [pin A4] - IOT8B/TDO [pin A3] - IOT9A/SCLK/SPMI_CLK [pin B1] - VCC [pin D4] - VCCIO0 [pin B2] - VCCIO1 [pin C3] - VCCX [pin A1] - VSS [pin C2] ### U4 — testmetapart **Pins:** - In [pin 2] - Out [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/nico/9v-555-led-blinker~mig](https://www.flux.ai/nico/9v-555-led-blinker~mig).* --- *Generated from [https://www.flux.ai/nico/9v-555-led-blinker~mig](https://www.flux.ai/nico/9v-555-led-blinker~mig)*