Ultra low power led flasher
About the Ultra low power led flasher PCB
Ultra low power led flasher is an open source PCB design by LieBtrau, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 56 × 47 mm, with 37 components from 25 distinct parts.
Other key parts include the 74LVC1G123DP,125 and TPS7A0218PDBVR. By type, the board carries 14 resistors, 8 capacitors, 5 transistors, 3 diodes, 2 ICs and 2 connectors.
From the project
ATtiny13 firmware to drive the flasher
The original project has been designed in 2020. See more about this project on Hackaday.io.
In 2026, the idea has been reused to create a "glow-in-the-dark" like effect for a night light. The RTC has been replaced by a low power oscillator, also used by Stephan's Yet another ultra low power LED.
Main components on the Ultra low power led flasher
Ultra low power led flasher bill of materials (BOM)
37 components, 25 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LVC1G123DP,125 74xx123 Nexperia | TSSOP-8_3x3mm_P0.65mm | U1 |
| 1 | TPS7A0218PDBVR TPS7A0218 TI | SOT-23-5 | U2 |
| 1 | AO3401A Alpha & Omega Semicon | SOT-23-3 | Q1 |
| 1 | MMBT3904-7-F MMBT3904 Diodes Incorporated | SOT-23-3 | Q2 |
| 1 | MMBT3906LT1G MMBT3906 onsemi | SOT-23-3 | Q3 |
| 1 | BSS806NH6327-HXY BSS806N HXY MOSFET | SOT-23-3 | Q4 |
| 1 | DMG1012T-7 DMG1012 KUU | SOT-523 | Q5 |
| 2 | U.FL-R-SMT-1(10) U.FL Hirose Electric Co Ltd | U.FL_Hirose_U.FL-R-SMT-1_Vertical | J1, J2 |
| 1 | 3314J-1-204E 200K BOURNS | Potentiometer_Bourns_3314J_Vertical | RV1 |
| 1 | GT JTLPS1.13-KKLN-25-1-150-R33 GRN OSRAM | LED_PLCC_2835 | LD1 |
| 3 | 1N4148WS 1N4148 Jiangsu Changjing Electronics Technology Co., Ltd. | D_SOD-323 | D1, D3, D4 |
| 1 | 74404064102 1m Würth Elektronik | L_Wurth_WE-LQS-6045 | L1 |
| 3 | GCM188R71H103KA37D 10n Murata Electronics | C_0603_1608Metric | C1, C6, C8 |
| 2 | CL10A105KB8NNNC 1µ Samsung Electro-Mechanics | C_0603_1608Metric | C2, C3 |
| 1 | CL10C220JB8NNNC 22p Samsung Electro-Mechanics | C_0603_1608Metric | C4 |
| 1 | CL10B102KB8NNNC 1n Samsung Electro-Mechanics | C_0603_1608Metric | C5 |
| 1 | CL10C101JB8NNNC 100p Samsung Electro-Mechanics | C_0603_1608Metric | C7 |
| 6 | 0603WAF1005T5E 10M UNI-ROYAL | R_0603_1608Metric | R1, R2, R4, R5, R6, R7 |
| 1 | RC0603FR-071ML 1M Yageo | R_0603_1608Metric | R3 |
| 2 | 0603WAF100JT5E 10E UNI-ROYAL | R_0603_1608Metric | R9, R13 |
Show 5 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 0603WAF100KT5E 1E UNI-ROYAL | R_0603_1608Metric | R10 |
| 1 | 0603WAF510JT5E 51E UNI-ROYAL | R_0603_1608Metric | R11 |
| 1 | RC0603FR-07100KL 100K Yageo | R_0603_1608Metric | R12 |
| 1 | RC0603FR-070RL 0E Yageo | R_0603_1608Metric | R14 |
| 1 | RC0603FR-0720KL 20K Yageo | R_0603_1608Metric | R15 |
Ultra low power led flasher design files
The KiCad project lives in the LieBtrau/ultra-low-power-led-flasher repository on GitHub; these links point at the commit this page was built from.
Ultra low power led flasher: common questions
How big is the Ultra low power led flasher PCB?
The Ultra low power led flasher measures 56 × 47 mm, has 2 copper layers and is 0.8 mm thick.
How many components are on the Ultra low power led flasher?
37 components, from 25 distinct parts. The full bill of materials is listed on this page.
Where can I download the Ultra low power led flasher design files?
From the LieBtrau/ultra-low-power-led-flasher repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Ultra low power led flasher design in my own project?
Yes, under the terms of its GPL-3.0 license, which LieBtrau chose for the repository.