# 9V Battery LED Blinker ## Description Simple 9V battery-powered NE555 astable LED blinker with on/off switch, red indicator LED, and hand-solder-friendly through-hole components. ## Project Details - **Owner:** dacre - **Created:** 4/10/2026 - **Last Updated:** 4/10/2026 - **Visibility:** Public - **Implementation Details:** NE555 astable LED blinker at approximately 1 Hz with SPST power switch, through-hole LED, axial resistors, and through-hole battery connector - **Power Requirements:** 9V battery input ## Key Components ### J1 — [967](https://www.flux.ai/cherepanyadima/967~d6.md) - Role Details: 9V battery connector for the circuit supply - Role: Power Input - Manufacturer Part Number: 967 - Part Type: Connectors - Manufacturer Name: Keystone Electronics - Package: Through Hole - Datasheet URL: https://www.keyelco.com/userAssets/file/K75p36.pdf **Pins:** - NEG [pin NEG] - POS [pin POS] ### J2 — 967 - Manufacturer Name: Keystone Electronics - Datasheet URL: https://www.keyelco.com/userAssets/file/K75p36.pdf - Part Type: Connectors - Manufacturer Part Number: 967 **Pins:** - NEG [pin NEG] - POS [pin POS] ### J3 — 967 half good - Manufacturer Name: Keystone Electronics - Datasheet URL: https://www.keyelco.com/userAssets/file/K75p36.pdf - Part Type: Connectors - Manufacturer Part Number: 967 **Pins:** - NEG [pin NEG] - POS [pin POS] ### LED1 — [LTL-307EE](https://www.flux.ai/vasy_skral/ltl-307ee~a2.md) - Manufacturer Part Number: LTL-307EE - Role Details: Red blinking LED output indicator - Package: 5mm Through Hole - Part Type: LED - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1153/LTL-307EE.pdf - Manufacturer Name: Lite-On Inc. - Role: Indicator - 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) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: L101011MS02Q - Role Details: SPST switch for turning the 9V battery supply on and off - Package: Through Hole - Manufacturer Name: C&K - Part Type: Switch - Datasheet URL: https://www.ckswitches.com/media/1423/l.pdf - Role: Power Switch **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [NE555N](https://www.flux.ai/jecstronic/ne555n~37i.md) - Manufacturer Name: STMicroelectronics - Datasheet URL: https://www.st.com/content/ccc/resource/technical/document/datasheet/ba/0a/d7/6e/7c/db/4e/12/CD00000479.pdf/files/CD00000479.pdf/jcr:content/translations/en.CD00000479.pdf - Part Type: Integrated Circuit - Package: DIP-8 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: NE555N - Role Details: 555 timer in astable configuration for approximately 1 Hz LED blinking - Role: Oscillator **Pins:** - Control_Voltage [pin 5] - Discharge [pin 7] - GND [pin 1] - Output [pin 3] - Reset [pin 4] - Threshold [pin 6] - Trigger [pin 2] - VCC [pin 8] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/dacre/9v-battery-led-blinker~ab](https://www.flux.ai/dacre/9v-battery-led-blinker~ab).* --- *Generated from [https://www.flux.ai/dacre/9v-battery-led-blinker~ab](https://www.flux.ai/dacre/9v-battery-led-blinker~ab)*