LED Driver Design with Arduino

Worked for 21 mins

flux

Blocked: your account has no available ACUs, so I can’t continue executing tools right now.

Accomplished:

Resolved the Arduino Nano VIN ERC by marking VIN as intentionally unused; the Nano is powered from 5V_CTRL.
Searched for the exact OSRAM GW CPSRM1.PM; it is not currently available in the Flux library, so I kept the closest available OSRAM 700 mA LED stand-in and submitted a missing-part request.
Selected and applied SMMS0650-680M as the real 68 µH shielded inductor candidate for L1–L5, using the closest valid footprint option.
Set the board to 140 × 90 mm, 4-layer stackup, and placed the LEDs as 5 horizontal rows of 3 LEDs, with each driver channel beside its row.

Open items:

Need to rerun ERC/DRC after ACUs are available to confirm the VIN issue is clean and check placement.
The exact GW CPSRM1.PM still needs to be imported/created from a datasheet if you want exact BOM/footprint fidelity.
High-current trace-width/layout rules still need to be applied; the last layout-rule call was blocked by a selector issue before I could correct it.

Suggested next steps:

Re-run ERC/DRC and fix any new placement/footprint issues.
Import/create the exact OSRAM GW CPSRM1.PM part from its datasheet.
Apply high-current net trace-width rules and thermal copper guidance.
Route the PCB after confirming the LED row placement.

Create LED part

Run ERC/DRC

Set trace rules

Review BOM

Finish verification

U_REG1

F1 P2 - D_PROT1 K

U11 K - U12 A

U8 K - U9 A

U2 PWMD - U_MCU1 D5

U3 SW - L3 P2

U5 RT - R8 P2

U6 K - U7 A

D4 A - U4 GND

U5 SW - L5 P2

U1 VDD - R_T1 P1

U8 K - U9 A

U4 RT - R7 P2

D5 A - U5 GND

D2 A - U2 GND

U2 GND - R1 P2

U2 SW - L2 P2

U5 SW - L5 P2

D2 A - U2 GND

D3 A - U3 GND

U13 K - L3 P1

F1 P2 - D_PROT1 K

U7 K - L1 P1

U1 SW - L1 P2

U3 VDD - R6 P1

U1 Rs - R_SENSE1 P1

U9 K - U10 A

U2 Rs - R1 P1

U3 GND - R2 P2

U14 K - U15 A

F1 P2 - D_PROT1 K

D3 A - U3 GND

U16 K - L4 P1

U5 PWMD - U_MCU1 D10

U10 K - L2 P1

U13 K - L3 P1

U1 RT - R_T1 P2

F1 P2 - D_PROT1 K

U5 Rs - R4 P1

U5 VDD - R8 P1

U12 K - U13 A

GND

U4 Rs - R3 P1

U3 SW - L3 P2

U1 GND - R_SENSE1 P2

U12 K - U13 A

L_REG1 P2 - U_REG1 FB

GND

U_REG1 CB - C_5V1 P1

U15 K - U16 A

U19 K - L5 P1

U2 RT - R5 P2

U16 K - L4 P1

U10 K - L2 P1

U2 VDD - R5 P1

U14 K - U15 A

U4 PWMD - U_MCU1 D9

U4 VDD - R7 P1

U17 K - U18 A

D4 A - U4 GND

U4 GND - R3 P2

U4 SW - L4 P2

U_REG1 SW - C_5V1 P2

F1 P2 - D_PROT1 K

U7 K - L1 P1

U11 K - U12 A

U5 GND - R4 P2

U1 SW - L1 P2

U_REG1 SW - C_5V1 P2

D1 A - U1 GND

U3 PWMD - U_MCU1 D6

U9 K - U10 A

U1 PWMD - U_MCU1 D3

U3 Rs - R2 P1

D5 A - U5 GND

U2 SW - L2 P2

U15 K - U16 A

F1 P2 - D_PROT1 K

U3 RT - R6 P2

U4 SW - L4 P2

D1 A - U1 GND

GND

C_5V1

Capacitance

10 µF

Capacitance

10 µF

U13

U15

U16

U12

U14

U17

U11

U10

Reviews

Generic Inductor
A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
jharwinbarrozo
16.2k
Generic Capacitor
A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Resistor
A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
Net Portal
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
jharwinbarrozo
43.0M
RMCF0805JT47K0
General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
jharwinbarrozo
1.2M
875105359001
10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
jharwinbarrozo
1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
jharwinbarrozo
1.1M
1070TR
Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlink
jharwinbarrozo
700.5k

Project Name

Arduino 15-LED Constant Current Driver

Description

A 24V, five-channel 700mA constant-current OSRAM LED driver system with Arduino Nano PWM dimming.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor	Qty 1
Arrow	$6.99–$7.55
Digi-Key	$5.85–$6.83
HQonline	$1.23–$1.58
LCSC	$16.00–$16.33
Mouser	$8.59
TME	$2.35
Verical	$0.42–$0.50

Controls

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io97 / Arduino 15-LED Constant Current Driver

Schematic