# Causal Crimson Electronic Thumb

## Description

Welcome to your new project\. Imagine what you can build here\.

## Project Details

- **Owner:** bryan
- **Created:** 1/30/2026
- **Last Updated:** 1/30/2026
- **Visibility:** Public

## Key Components

### B1 — [1294](https://flux.ai/adrian95/1294~dfz.md)

- Manufacturer Name: Keystone Electronics
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: 1294
- Voltage: 9V
- Part Type: Connector
- Role Details: 9V battery clip/holder input
- Datasheet URL: https://www\.keyelco\.com/userAssets/file/M65p33\.pdf
- Package: Through Hole
- Role: Battery Connector

**Pins:**
- NEGATIVE [pin N]
- POSITIVE [pin P]

### D1 — [1N5819](https://flux.ai/jecstronic/1n5819~dbj.md)

- Package: DO\-41 Through Hole
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: Series Schottky diode on battery input \(adds forward voltage drop\)
- Manufacturer Name: STMicroelectronics
- Datasheet URL: https://www\.st\.com/content/ccc/resource/technical/document/datasheet/26/db/14/60/52/47/47/5b/CD00001625\.pdf/files/CD00001625\.pdf/jcr:content/translations/en\.CD00001625\.pdf
- Part Type: Diode
- Manufacturer Part Number: 1N5819
- Role: Reverse Polarity Protection

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

### LED1 — [WP710A10ID5V](https://flux.ai/adrian95/wp710a10id5v~ugr.md)

- Datasheet URL: https://www\.kingbrightusa\.com/images/catalog/SPEC/WP710A10ID5V\.pdf
- Package: Through Hole 5mm
- Manufacturer Name: Kingbright
- Role Details: Red LED blink output
- Role: Indicator LED
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: WP710A10ID5V
- Part Type: LED

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

### S1 — [200USP9T1A1M2RE](https://flux.ai/jecstronic/200usp9t1a1m2re~y9j.md)

- Manufacturer Part Number: 200USP9T1A1M2RE
- Datasheet URL: https://eswitch\.wpengine\.com/wp\-content/uploads/2022/06/200U\.pdf
- Package: Through Hole
- Part Type: Switch
- Role: Power Switch
- Manufacturer Name: E\-Switch
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: SPST on/off switch in series with battery positive

**Pins:**
- COM [pin 6]
- NO [pin 4]
- SUPPORT\_TERMINAL\_1 [pin 1]
- SUPPORT\_TERMINAL\_2 [pin 3]

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

- Role: Timer IC
- Role Details: NE555 astable oscillator driving LED
- Package: DIP\-8\_W7\.62mm
- Manufacturer Name: Texas Instruments Inc\.
- Package or Case Code: DIP\-8\_W7\.62mm
- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/ne555\.pdf
- 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/bryan/causal\-crimson\-electronic\-thumb\~tni](https://flux.ai/bryan/causal-crimson-electronic-thumb~tni).*

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*Generated from [https://flux\.ai/bryan/causal\-crimson\-electronic\-thumb\~tni](https://flux.ai/bryan/causal-crimson-electronic-thumb~tni)*