# trialer ## Description Hand-solderable 9V battery-powered red LED blinker using a 555 timer, on/off switch, through-hole passives, and a PP3 battery holder. ## Project Details - **Owner:** yann-furrer - **Created:** 7/23/2026 - **Last Updated:** 7/24/2026 - **Visibility:** Public - **Power Requirements:** Battery - **Implementation Details:** Through-hole hand-solderable 555 astable LED blinker - **Domain:** Consumer Electronics - **Human Interface:** Switches ## Key Components ### BT1 — [BH9VPC](https://www.flux.ai/adrian95/bh9vpc.md) - Part Type: Battery Holder - Role: Energy Storage - Datasheet URL: https://www.memoryprotectiondevices.com/datasheets/BH9VPC/BH9VPC-datasheet.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 9V battery source for blinker - Manufacturer Name: MPD - Manufacturer Part Number: BH9VPC **Pins:** - - [pin -] - + [pin +] ### D1 — [LTL-307EE](https://www.flux.ai/vasy_skral/ltl-307ee~a2.md) - Role Details: Red LED driven by 555 OUT pin - License: https://creativecommons.org/licenses/by/4.0/ - Role: Signal Generation - Manufacturer Name: Lite-On Inc. - Manufacturer Part Number: LTL-307EE - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1153/LTL-307EE.pdf - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### SW1 — [450301014042](https://www.flux.ai/markwuflux/450301014042~nt.md) - Manufacturer Name: Wurth Elektronik - Role: Switching - Datasheet URL: https://datasheet.datasheetarchive.com/originals/distributors/DKDS-9/165080.pdf - Manufacturer Part Number: 450301014042 - Role Details: SPDT slide switch wired as SPST on/off battery disconnect **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### U1 — [NE555P](https://www.flux.ai/adrian95/ne555p~870.md) - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fse555 - Role: Timing - Manufacturer Part Number: NE555P - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Role Details: NE555P astable oscillator for 1 Hz LED blink - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments **Pins:** - CONT [pin 5] - DISCH [pin 7] - GND [pin 1] - OUT [pin 3] - RESET [pin 4] - THRES [pin 6] - TRIG [pin 2] - VCC [pin 8] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/yann-furrer/trialer~yb](https://www.flux.ai/yann-furrer/trialer~yb).* --- *Generated from [https://www.flux.ai/yann-furrer/trialer~yb](https://www.flux.ai/yann-furrer/trialer~yb)*