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LED Blinker Circuit Design

Updated 7 nets

0:01

Connected GND:GND, BT1:N, U1:GND, C1:P2, C2:P2, C3:P2, LED1:K

Connected BT1:P to S1:COM

Connected S1:NO, U1:VCC, C2:P1, C3:P1, R1:P1, R3:P1

Connected U1:R to U1:VCC

Connected U1:TR, U1:THR, R2:P2, C1:P1

Connected U1:DIS, R1:P2, R2:P1

Connected U1:Q to LED1:A

87 days

Updated 4 nets

Connected U1:R to U1:VCC

Connected S1:NO to U1:VCC

Disconnected U1:R from U1:VCC

Disconnected S1:NO from U1:VCC

87 days

Updated project description

Updated to: "9V NE555 1 Hz LED Blinker (Through-Hole)"

87 days

flux

0:00

Work done
  • Added the full through-hole blinker schematic: U1 (NE555P), BT1 (9V snap), S1 (SPST toggle), LED1, timing parts R1, R2, C1, LED resistor R3, and decoupling/bulk caps C2, C3.
  • Wired astable operation: U1 R tied to VCC, TR tied to THR, DIS with R1/R2, and C1 to GND.
  • Wired power + decoupling: BT1 -> S1 -> U1 VCC with C2 and C3 to GND.
  • Wired LED output (high-side drive): U1 Q -> LED1 anode; R3 from switched +9V to the LED anode; LED1 cathode to GND.
Success criteria review
  • ✅ Functional 9V battery powered NE555 astable LED blinker schematic is fully built and wired
  • ✅ All parts are through-hole / hand-solderable footprints
  • ✅ Includes decoupling (C2) and bulk (C3) capacitance, plus LED current limiting (R3 = 680Ω, about 10 mA nominal)
  • ❌ Timing is currently ~0.58 Hz (with R1=47kΩ, R2=100kΩ, C1=10uF), not 1 Hz
Next steps To hit ~1 Hz, I can update the timing network (e.g., change C1 to 4.7uF or adjust R1/R2). Tell me if you prefer changing one capacitor (simplest) or resistor values (keep 10uF).
87 days
​
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GND
GND
U1 DIS - R1 P2
BT1
U1 Q - LED1 A
S1
S1 NO - U1 VCC
S1 NO - U1 VCC
U1 TR - U1 THR
U1 R - U1 VCC
U1 Q - LED1 A
S1 NO - U1 VCC
R1
Resistance
47kΩ
C1
Capacitance
10uF
BT1 P - S1 COM
U1 TR - U1 THR
S1 NO - U1 VCC
GND
C2
Capacitance
100nF
S1 NO - U1 VCC
GND
U1 R - U1 VCC
C3
Capacitance
10uF
U1 DIS - R1 P2
GND
U1 TR - U1 THR
R2
Resistance
100kΩ
S1 NO - U1 VCC
U1 R - U1 VCC
U1 TR - U1 THR
BT1 P - S1 COM
U1 DIS - R1 P2
S1 NO - U1 VCC
GND
R3
Resistance
680Ω
U1
LED1

Reviews

  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
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    jharwinbarrozo
    1.5M
  • Generic Capacitor
    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
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Sacred Orange Dejarik thumbnail
9V NE555 1 Hz LED Blinker (Through-Hole)

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