# 9V 555 LED Blinker ## Description Through-hole 9V battery-powered 555 timer circuit that blinks a red LED about once per second through an on/off switch. ## Project Details - **Owner:** ryanf - **Created:** 7/17/2026 - **Last Updated:** 7/17/2026 - **Visibility:** Public ## Key Components ### BT1 — [BH9VPC](https://www.flux.ai/adrian95/bh9vpc.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role: Energy Storage - Part Type: Battery Holder - Role Details: 9V block battery input - Datasheet URL: https://www.memoryprotectiondevices.com/datasheets/BH9VPC/BH9VPC-datasheet.pdf - Manufacturer Part Number: BH9VPC - Manufacturer Name: MPD **Pins:** - - [pin -] - + [pin +] ### D1 — [LTL-307EE](https://www.flux.ai/vasy_skral/ltl-307ee~a2.md) - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1153/LTL-307EE.pdf - Manufacturer Part Number: LTL-307EE - Manufacturer Name: Lite-On Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Red blinking LED output - Part Type: LED - Role: Signal Generation **Pins:** - A [pin 2] - K [pin 1] ### S1 — [L101011MS02Q](https://www.flux.ai/adrian95/l101011ms02q~ck2.md) - Manufacturer Part Number: L101011MS02Q - Part Type: Switch - Role: Switching - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: C&K - Role Details: Main on/off switch for battery positive lead - Datasheet URL: https://www.littelfuse.com/assetdocs/littelfuse-ck-slide-l-series-datasheet?assetguid=b0eee6fb-c634-4a1e-9e34-22a5c4b081c8 **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [NE555P](https://www.flux.ai/adrian95/ne555p~870.md) - Manufacturer Name: Texas Instruments - Role Details: NE555P astable oscillator for red LED blinking - Role: Timing - Part Type: Integrated Circuit - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fse555 - Manufacturer Part Number: NE555P - Symbol Style: parametric-v1 - License: https://creativecommons.org/licenses/by/4.0/ **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] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ryanf/9v-555-led-blinker-npmmn~8b6](https://www.flux.ai/ryanf/9v-555-led-blinker-npmmn~8b6).* --- *Generated from [https://www.flux.ai/ryanf/9v-555-led-blinker-npmmn~8b6](https://www.flux.ai/ryanf/9v-555-led-blinker-npmmn~8b6)*