# 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://www.flux.ai/adrian95/1294.md) - Datasheet URL: https://www.keyelco.com/userAssets/file/M65p33.pdf - Package: Through Hole - Role: Battery Connector - Voltage: 9V - Manufacturer Part Number: 1294 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Role Details: 9V battery clip/holder input - Manufacturer Name: Keystone Electronics **Pins:** - NEGATIVE [pin N] - POSITIVE [pin P] ### D1 — [1N5819](https://www.flux.ai/jecstronic/1n5819.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: STMicroelectronics - Role Details: Series Schottky diode on battery input (adds forward voltage drop) - Part Type: Diode - Role: Reverse Polarity Protection - Manufacturer Part Number: 1N5819 - Package: DO-41 Through Hole - 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 **Pins:** - A [pin 2] - K [pin 1] ### LED1 — [WP710A10ID5V](https://www.flux.ai/adrian95/wp710a10id5v.md) - Manufacturer Part Number: WP710A10ID5V - Manufacturer Name: Kingbright - Datasheet URL: https://www.kingbrightusa.com/images/catalog/SPEC/WP710A10ID5V.pdf - Package: Through Hole 5mm - Role: Indicator LED - Part Type: LED - Role Details: Red LED blink output - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### S1 — [200USP9T1A1M2RE](https://www.flux.ai/jecstronic/200usp9t1a1m2re.md) - Manufacturer Part Number: 200USP9T1A1M2RE - Datasheet URL: https://eswitch.wpengine.com/wp-content/uploads/2022/06/200U.pdf - Manufacturer Name: E-Switch - Package: Through Hole - Role: Power Switch - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: SPST on/off switch in series with battery positive - Part Type: Switch **Pins:** - COM [pin 6] - NO [pin 4] - SUPPORT_TERMINAL_1 [pin 1] - SUPPORT_TERMINAL_2 [pin 3] ### U1 — [NE555P - 518340](https://www.flux.ai/kicad-part-library/ne555p-518340.md) - Package: DIP-8_W7.62mm - Datasheet URL: http://www.ti.com/lit/ds/symlink/ne555.pdf - Manufacturer Name: Texas Instruments Inc. - Role Details: NE555 astable oscillator driving LED - Manufacturer Part Number: NE555P - Package or Case Code: DIP-8_W7.62mm - Role: Timer IC **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://www.flux.ai/bryan/causal-crimson-electronic-thumb](https://www.flux.ai/bryan/causal-crimson-electronic-thumb).* --- *Generated from [https://www.flux.ai/bryan/causal-crimson-electronic-thumb](https://www.flux.ai/bryan/causal-crimson-electronic-thumb)*