# 9V NE555 LED Blinker ## Description 9V battery-powered NE555 astable LED blinker (~1 Hz) with on/off switch; through-hole hand-solderable parts. ## Project Details - **Owner:** elporro23 - **Created:** 4/9/2026 - **Last Updated:** 4/15/2026 - **Visibility:** Public ## Key Components ### J1 — [967 half good](https://www.flux.ai/dacre/967-half-good.md) - Manufacturer Part Number: 967 - Package: Through Hole - Role Details: 9V battery clip connection - Part Type: Connectors - Datasheet URL: https://www.keyelco.com/userAssets/file/K75p36.pdf - Role: Power Input - Manufacturer Name: Keystone Electronics **Pins:** - NEG [pin NEG] - POS [pin POS] ### LED1 — [LTL-307EE](https://www.flux.ai/vasy_skral/ltl-307ee.md) - Role Details: Blinking red LED driven by 555 output - Part Type: LED - Package: THT 5mm - License: https://creativecommons.org/licenses/by/4.0/ - Role: Indicator - Manufacturer Name: Lite-On Inc. - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1153/LTL-307EE.pdf - Manufacturer Part Number: LTL-307EE **Pins:** - A [pin 2] - K [pin 1] ### SW1 — [SPDT Toggle Switch on-none-on](https://www.flux.ai/jwwitherspoon/spdt-toggle-switch-on-none-on.md) - Role: Power Switch - Role Details: Battery on off switch using one throw only - Package: Through Hole - Manufacturer Part Number: 200MSP1T1B1M2QEH - Current: 3A - Part Type: Switch - Purchase Url: https://www.digikey.com/en/products/detail/e-switch/200MSP1T1B1M2QEH/378916 - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/6463/Series%20200%20Switches.pdf - Manufacturer Name: E-Switch **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### U1 — [NE555P - 518340](https://www.flux.ai/kicad-part-library/ne555p-518340.md) - Package: PDIP-8 - Role: Oscillator - Manufacturer Name: Texas Instruments Inc. - Role Details: NE555 astable timer for LED blinking - Package or Case Code: DIP-8_W7.62mm - Datasheet URL: http://www.ti.com/lit/ds/symlink/ne555.pdf - Manufacturer Part Number: NE555P **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/elporro23/9v-ne555-led-blinker](https://www.flux.ai/elporro23/9v-ne555-led-blinker).* --- *Generated from [https://www.flux.ai/elporro23/9v-ne555-led-blinker](https://www.flux.ai/elporro23/9v-ne555-led-blinker)*