# Keisuke Test

## Description

Battery\-powered 555 timer LED flasher with on/off switch, timing network, and indicator LED output for simple oscillator testing and demonstration\.

## Project Details

- **Owner:** brooks
- **Created:** 3/17/2026
- **Last Updated:** 3/20/2026
- **Visibility:** Public
- **Preferred Distributor:** LCSC

## Key Components

### IC1 — [LM555CN](https://flux.ai/vasyl/lm555cn~ish.md)

- Role Details: NE555\-compatible astable oscillator core for 1 Hz LED blinking from 9V battery
- Manufacturer Name: Texas Instruments
- Datasheet URL: https://www\.ti\.com/general/docs/suppproductinfo\.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww\.ti\.com%2Flit%2Fgpn%2Flm555
- Role: Timer
- Package: PDIP\-8
- Manufacturer Part Number: LM555CN
- Part Type: Integrated Circuit

**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]

### J1 — [967](https://flux.ai/cherepanyadima/967~d6.md)

- Manufacturer Name: Keystone Electronics
- Role Details: 9V block battery snap connector for main power input
- Package: Through Hole
- Datasheet URL: https://www\.keyelco\.com/userAssets/file/K75p36\.pdf
- Manufacturer Part Number: 967
- Role: Battery Input
- Part Type: Connectors

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

### LED1 — [LTL\-307EE](https://flux.ai/vasy_skral/ltl-307ee~a2.md)

- Role Details: Red LED driven by 555 output
- Manufacturer Name: Lite\-On Inc\.
- License: https://creativecommons\.org/licenses/by/4\.0/
- Package: 5mm THT
- Datasheet URL: https://mm\.digikey\.com/Volume0/opasdata/d220001/medias/docus/1153/LTL\-307EE\.pdf
- Part Type: LED
- Role: Indicator LED
- Manufacturer Part Number: LTL\-307EE

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

### S1 — [KCD11\-2P\-R](https://flux.ai/adrian95/kcd11-2p-r~o0w.md)

- Part Type: Switch
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://lcsc\.com/datasheet/lcsc\_datasheet\_2411251529\_SHOU\-HAN\-KCD11\-2P\-R\_C5884414\.pdf
- Manufacturer Name: SHOU HAN
- Manufacturer Part Number: KCD11\-2P\-R
- Package: Through Hole
- Role: Power Switch
- Role Details: SPST on off switch between battery positive and circuit supply

**Pins:**
- P1
- P2

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/brooks/keisuke\-test\~t2](https://flux.ai/brooks/keisuke-test~t2).*

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*Generated from [https://flux\.ai/brooks/keisuke\-test\~t2](https://flux.ai/brooks/keisuke-test~t2)*