A Blinking LED

The schematic is now wired. I’m verifying the netlist and ERC checks, including the 555 mandatory reset, control bypass, and supply decoupling connections.
Implemented the 9V hand-solderable red LED blinker schematic using a TI NE555P DIP-8, through-hole LED, slide switch, PP3 9V battery holder, axial resistors, and through-hole capacitors. The 555 astable is set to about 1.06 Hz with ~50% duty cycle, so the LED blinks roughly once per second; electrical connectivity checks are clean.
Open items:
  • PCB layout/routing is not done yet, so airwire DRC errors are expected.
  • Generic passives have through-hole packages and values, but not exact manufacturer part numbers yet.
Suggested next steps:
  1. Assign exact MPNs for the generic resistors/capacitors if you want a manufacturable BOM.
  2. Move into PCB layout: size the board, place the battery holder/switch/LED, then route.
  3. Add silkscreen labels for battery polarity, switch ON/OFF, and LED orientation.
BOM and layout
Assign passive MPNs
Start PCB layout
Route the board
Add silkscreen labels

Demo Complete

The demo is finished. It didn't use any ACUs. You can now continue working with this project like normal.

U1
BT1 + - SW1 1
C3
Capacitance
100nF
R3 P2 - D1 A
SW1 2 - U1 VCC
SW1 2 - U1 VCC
R3 P2 - D1 A
U1 OUT - R3 P1
R1 P2 - U1 DISCH
C2
Capacitance
10nF
U1 CONT - C2 P1
R2 P2 - U1 THRES
SW1 2 - U1 VCC
SW1 2 - U1 VCC
SW1 2 - U1 VCC
SW1 2 - U1 VCC
U1 TRIG - C1 P1
U1 TRIG - C1 P1
R2 P2 - U1 THRES
C1
Capacitance
1uF
BT1 + - SW1 1
U1 CONT - C2 P1
C4
Capacitance
10uF
R1 P2 - U1 DISCH
GND
R3
Resistance
1kΩ
GND
BT1
D1
GND
SW1
GND
R2
Resistance
680kΩ
GND
GND
GND
R1
Resistance
1kΩ

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    9V LED Blinker

    9V LED Blinker thumbnail
    Hand-solderable 9V battery-powered red LED blinker using a 555 timer, on/off switch, through-hole passives, and a PP3 battery holder.

    Properties

    Battery

    Through-hole hand-solderable 555 astable LED blinker

    Consumer Electronics

    Switches

    Pricing & Availability

    Distributor

    Qty 1

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    $0.32–$0.57

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    $2.30–$2.46

    Controls