# 9V 555 LED Blinker ## Description Hand-solderable 9V battery powered NE555 astable circuit that blinks a red LED about once per second through an on/off switch. ## Project Details - **Owner:** vignesh08 - **Created:** 6/16/2026 - **Last Updated:** 6/16/2026 - **Visibility:** Public ## Key Components ### D1 — [L-53ID](https://www.flux.ai/lcsc/l-53id~yseu.md) - Role: Indicator - Role Details: Through-hole red LED blinks at approximately once per second from U1 output - JLCPCB Part Class: Extended Part - Manufacturer Name: Kingbright - Part Type: LED - Manufacturer Part Number: L-53ID - Package or Case Code: LED-TH_BD5.9-P2.54-RD_RED - Datasheet URL: https://www.lcsc.com/datasheet/C598429.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlVZVVIFFgBeVAVTT1BXUgFfEwJeVlBfEwVcAlMHRAQxVlNeR1RXVVVXT1leVTsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - LCSC Part Number: C598429 **Pins:** - - [pin 1] - + [pin 2] ### J1 — [DB127V-5.08-2P-GN-S](https://www.flux.ai/cherepanyadima/db127v-5p08-2p-gn-s~ic.md) - Datasheet URL: https://www.lcsc.com/datasheet/C3018698.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=ElhbUlFSRlUNBF0CQlQIBQBUFFILBFEAQVVWUgZWE1gxVlNRQVVdVFRSQ1daVDsOAxUeFF5JWBYZEEoBGA4JCwFIFA4DSA%3D%3D - Role: Power Input - Part Type: Connector - Manufacturer Part Number: DB127V-5.08-2P-GN-S - Manufacturer Name: DORABO - Role Details: Hand-solderable 2-pin terminal block for connecting 9V battery snap leads; positive routes through SW1 **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW1 — [450301014042](https://www.flux.ai/markwuflux/450301014042~nt.md) - Role Details: SPDT slide switch used as SPST on/off switch between 9V battery positive and circuit VCC - Role: Power Switch - Manufacturer Part Number: 450301014042 - Manufacturer Name: Wurth Elektronik - Datasheet URL: https://datasheet.datasheetarchive.com/originals/distributors/DKDS-9/165080.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### U1 — [NE555P](https://www.flux.ai/adrian95/ne555p~870.md) - Manufacturer Name: Texas Instruments - Role: Timer/Oscillator - License: https://creativecommons.org/licenses/by/4.0/ - 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 - Role Details: NE555 astable oscillator powered from switched 9V; drives red LED at about 1 Hz using R1=1kΩ, R2=680kΩ, C1=1uF **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/vignesh08/9v-555-led-blinker~pc](https://www.flux.ai/vignesh08/9v-555-led-blinker~pc).* --- *Generated from [https://www.flux.ai/vignesh08/9v-555-led-blinker~pc](https://www.flux.ai/vignesh08/9v-555-led-blinker~pc)*