LED Blinker Circuit Design

Thought

flux

Connected U1:R to U1:VCC
Connected S1:NO to U1:VCC
Disconnected U1:R from U1:VCC
Disconnected S1:NO from U1:VCC

Thought

flux

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

Thought

flux

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).

BT1

Resistance

47kΩ

Resistance

100kΩ

Resistance

680Ω

Capacitance

10uF

Capacitance

100nF

Capacitance

10uF

LED1

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
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Project Name

Description

9V NE555 1 Hz LED Blinker (Through-Hole)

Properties

System Ar…itecture

Pricing & Availability

Distributor	Qty 1
Arrow	$0.35–$0.45
Digi-Key	$5.49–$5.98
LCSC	$3.67
Mouser	$6.72
TME	$0.48
Verical	$7.42–$14.31

Controls

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