# 9V 555 LED Blinker ## Description Simple hand-solderable 9V battery LED blinker using a NE555 astable oscillator, on/off switch, battery snap connector, supply decoupling, and a red status LED blinking at approximately 1 Hz. ## Project Details - **Owner:** brooks-tast-2026-04-23-2138 - **Created:** 4/24/2026 - **Last Updated:** 4/24/2026 - **Visibility:** Public ## Key Components ### J1 — [967](https://www.flux.ai/dirk-builds/967~tp.md) - Datasheet URL: https://www.keyelco.com/userAssets/file/K75p36.pdf - Part Type: Connectors - Package: Through Hole - Role Details: 9V battery snap connector input - Role: Power Input - Manufacturer Part Number: 967 - Manufacturer Name: Keystone Electronics **Pins:** - NEG [pin NEG] - POS [pin POS] ### LED1 — [LTL-307EE](https://www.flux.ai/vasy_skral/ltl-307ee~a2.md) - Package: 5mm THT - Role: Indicator - Part Type: LED - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1153/LTL-307EE.pdf - Role Details: Red blinking status LED - Manufacturer Name: Lite-On Inc. - Manufacturer Part Number: LTL-307EE - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### SW1 — [L101011MS02Q](https://www.flux.ai/adrian95/l101011ms02q~ck2.md) - Datasheet URL: https://www.ckswitches.com/media/1423/l.pdf - Part Type: Switch - Package: Through Hole - Manufacturer Name: C&K - Manufacturer Part Number: L101011MS02Q - Role Details: Main on/off switch between 9V battery positive and the circuit supply rail - License: https://creativecommons.org/licenses/by/4.0/ - Role: Power Switch **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [NE555P - 518340](https://www.flux.ai/kicad-part-library/ne555p-518340~vhf.md) - Manufacturer Part Number: NE555P - Datasheet URL: http://www.ti.com/lit/ds/symlink/ne555.pdf - Package: PDIP-8 - Role: Oscillator - Manufacturer Name: Texas Instruments Inc. - Role Details: 555 timer in astable configuration for 1 Hz LED blinking - Package or Case Code: DIP-8_W7.62mm **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] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/brooks-tast-2026-04-23-2138/9v-555-led-blinker~8w](https://www.flux.ai/brooks-tast-2026-04-23-2138/9v-555-led-blinker~8w).* --- *Generated from [https://www.flux.ai/brooks-tast-2026-04-23-2138/9v-555-led-blinker~8w](https://www.flux.ai/brooks-tast-2026-04-23-2138/9v-555-led-blinker~8w)*