# 9V 555 LED Blinker

## Description

Hand\-solderable NE555 astable LED blinker powered from a 9 V battery with an on/off switch and approximately 1 Hz blink rate\.

## Project Details

- **Owner:** thea\-flux\-testing
- **Created:** 4/24/2026
- **Last Updated:** 4/24/2026
- **Visibility:** Public
- **Copies:** 73

## Key Components

### D1 — [LTL\-307EE](https://flux.ai/vasy_skral/ltl-307ee~a2.md)

- Manufacturer Name: Lite\-On Inc\.
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://mm\.digikey\.com/Volume0/opasdata/d220001/medias/docus/1153/LTL\-307EE\.pdf
- Part Type: LED
- Package: THT 5mm
- Role: Indicator
- Role Details: Red LED visual blink output
- Manufacturer Part Number: LTL\-307EE

**Pins:**
- A [pin 2]
- K [pin 1]

### J1 — 967

- Package: Through Hole
- Manufacturer Name: Keystone Electronics
- Role Details: 9 V battery clip input, positive and negative battery terminals
- Datasheet URL: https://www\.keyelco\.com/userAssets/file/K75p36\.pdf
- Manufacturer Part Number: 967
- Part Type: Connectors
- Role: Power Input

**Pins:**
- NEG [pin NEG]
- POS [pin POS]

### S1 — [L101011MS02Q](https://flux.ai/adrian95/l101011ms02q~ck2.md)

- Datasheet URL: https://www\.ckswitches\.com/media/1423/l\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: L101011MS02Q
- Role: Power Switch
- Manufacturer Name: C&K
- Package: Through Hole
- Role Details: SPST on off switch controlling 9 V supply to the timer circuit
- Part Type: Switch

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### U1 — [NE555P \- 518340](https://flux.ai/kicad-part-library/ne555p~vhf.md)

- Manufacturer Name: Texas Instruments Inc\.
- Package or Case Code: DIP\-8\_W7\.62mm
- Role Details: NE555 astable timer for approximately 1 Hz LED blinking
- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/ne555\.pdf
- Role: Oscillator
- Package: PDIP\-8
- 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://flux\.ai/thea\-flux\-testing/9v\-555\-led\-blinker\~35](https://flux.ai/thea-flux-testing/9v-555-led-blinker~35).*

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*Generated from [https://flux\.ai/thea\-flux\-testing/9v\-555\-led\-blinker\~35](https://flux.ai/thea-flux-testing/9v-555-led-blinker~35)*