2 layers80 × 46 mm
IMU PLACEMENT STUDY
SpaceCadetJ/LoRa-Autonomous-Boat
An embedded-systems project spanning STM32 firmware, LoRa communication, PCB reconstruction and a documented V2 redesign.
130 parts
2 layers99.9 × 86 mm
This is a decorative LED that shines based on the audio input through the 3.5mm audio jack connector. The design is a 2-layer printed circuit board based on Great Scott Vu LED Meter with few modifications as noted in the README file.
- Size
- 99.9 × 86 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 128
- Nets
- 85
- Pads
- 291
- Tracks, vias
- 398, 36
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 27 Aug 2024
- Updated
- 27 Aug 2024
Overview
VULED is an open-source printed circuit board by hansenkw, from the hansenkw/Vu-LED-Meter repository on GitHub. It is a 2-layer board of 99.9 × 86 mm with 128 parts on 85 nets, routed with 398 tracks and 36 vias.
It is built around the LM324, R1240N001B-TR-FE and DMN3023L-7, with the SSM3J327R,LF and TP1 among its other parts. Its parts include 52 diodes, 48 resistors, 7 transistors, 7 connectors and 4 capacitors.
Main components
5
LM324
SOP-14-1.5V~10V 0℃~+70℃ 24V 250nA 3V~20V 4 40mA 50nA 700uA 7mV 80dB SOP-14 Operational Amplifier ROHSHXY MOSFETOperational Amplifier
R1240N001B-TR-FE
SOT-23-6W-40℃~+85℃@(TA) 1 1.25MHz 4.5V~30V Buck Buck No SOT-23-6W DC-DC Converters ROHSNisshinbo Micro Devices Inc.DC-DC Converters
DMN3023L-7
SOT-23-55℃~+150℃ 1 N-channel 1.3W 1.8V 18.4nC 25mΩ@10V 30V 6.2A 67pF 873pF SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
SSM3J327R,LF
SOT-23F-55℃~+150℃ 1 P-Channel 1W 20V 290pF 3.9A 300mV 32pF 4.6nC@4.5V 44pF 93mΩ@4.5V P-Channel SOT-23F MOSFETs ROHSToshibaMOSFETsTP1
-- Test leads ROHSFLUKEUncategorised
README
README.mdVu-LED-Meter
This is a decorative LED that shines based on the audio input through the 3.5mm audio jack connector. The design is a 2-layer printed circuit board (PCB) based on Great Scott Vu LED Meter (https://www.instructables.com/Make-Your-Own-LED-Sign-VU-Meter/) with few modifications as seen below.
- Changed through-hole (THT) to surface-mounted (SMD) components, allowing space-effiecient design.
- Designed a 12V-5V DCDC buck converter circuitry instead of using off the shelf module, integrated it with the rest of the circuitry into one PCB.
- Utilized six (instead of seven) audio voltage references with each associated with a single row of LEDs.
- Addeed current-limiting resistors to reduce current consumption.
Overview
Schematic Design
Layout
Parts
128| Qty | Value | Footprint | References |
|---|---|---|---|
| 51 | LED_Small | VuLED:150080VS75000-WL-SMCW_0805 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +35 |
| 24 | 24 | VuLED:CPF0603B24RE1 | R12, R17, R18, R20, R21, R26, R27, R28, R29, R31, R32, R33, R35, R36, R37, R38 +8 |
| 6 | 1.1k | VuLED:RES0805_CRG_TYCO_TYC | R6, R7, R8, R9, R10, R11 |
| 6 | 10k | VuLED:RES0805_CRG_TYCO_TYC | R13, R14, R15, R16, R19, R22 |
| 6 | DMN3023L-7 | VuLED:DMN3023L_7 | Q1, Q2, Q3, Q4, Q5, Q6 |
| 4 | MountingHole | VuLED:M3-Mounting Holes | H1, H2, H3, H4 |
| 3 | 112 | VuLED:RES0805_CRG_TYCO_TYC | R30, R34, R42 |
| 2 | 10k | VuLED:RESC2012X50N | R1, R2 |
| 2 | 1k | VuLED:RES0805_CRG_TYCO_TYC | R3, R48 |
| 2 | LM324 | VuLED:LM324-D14-M | U1, U2 |
| 2 | TP4 | VuLED:PH1_01_UA | J6, J7 |
| 1 | 0.1u | VuLED:C0805C104K5RACTU | C3 |
| 1 | 1.2k | VuLED:RES0805_CRG_TYCO_TYC | R24 |
| 1 | 100k | VuLED:POT_PTA3043_BRN | RV1 |
| 1 | 10u | VuLED:GRM31CR71E106KA12L | C2 |
| 1 | 10u | VuLED:KTS500B106M55N0T00 | C1 |
| 1 | 4.7u | VuLED:IND_SLF7045T-4R7M2R0-PF | L1 |
| 1 | 470pF | Capacitor_SMD:C_0201_0603Metric | C4 |
| 1 | 47k | VuLED:RES0805_CRG_TYCO_TYC | R4 |
| 1 | 5.4k | VuLED:RES0805_CRG_TYCO_TYC | R5 |
| 1 | 51 | VuLED:RC0805FR-0751RL | R25 |
| 1 | 6.3k | VuLED:RES0805_CRG_TYCO_TYC | R23 |
| 1 | AudioJack2_Ground | VuLED:STX-3000_KYC | J1 |
| 1 | Barrel_Jack_Switch | VuLED:EJ508A | J2 |
| 1 | D | VuLED:CMS11 | D51 |
| 1 | LOGO | LOGO | G*** |
| 1 | R1240N001B-TR-FE | VuLED:SOT-23-6W_PE-SOT23-6W-0512_NMD | U3 |
| 1 | SSM3J327R,LF | VuLED:SSM3J327R-LF | Q7 |
| 1 | TP1 | VuLED:PH1_01_UA | J3 |
| 1 | TP2 | VuLED:PH1_01_UA | J4 |
| 1 | TP3 | VuLED:PH1_01_UA | J5 |
Questions
How big is the VULED PCB?
It measures 99.9 × 86 mm and has 2 copper layers, 1.6 mm thick.
What parts does the VULED use?
128 parts, built around the LM324, R1240N001B-TR-FE, DMN3023L-7 and SSM3J327R,LF. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the VULED KiCad files?
From the hansenkw/Vu-LED-Meter repository on GitHub, at the commit this page was made from: the board is VULED.kicad_pcb and its schematic VULED.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the VULED design in my own project?
Its repository states no licence, so its author keeps all rights: ask hansenkw before reusing the design.
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