Route all unrouted nets on this PCB

Working for 3 days 23 hrs...
Thought for 2 mins 35 sec — Planning PCB routing actions
Routing traces.
Thought for 3 sec — Identifying trace overlaps
Routing traces.
Thought for a moment — Exploring intersections of net coordinates
Routing traces.
Routing traces.
Thought for a moment — Considering routing options
Routing traces.
Thought for 1 min 4 sec — Analyzing trace overlaps
Routing traces.
Routing traces.
Thought for 33 sec — Considering routing overlaps
Routing traces.
Routing traces.
Routing traces.
Thought for 6 sec — Evaluating routing strategy
Routing traces.
Thought for 3 mins 14 sec — Identifying issues with circuitry
Routing traces.
Thought for 1 min 52 sec — Inspecting overlap issues
Routing traces.
Thought for 1 min 20 sec — Simplifying circuit design
Routing traces.
Thought for 4 mins 32 sec — Considering routing strategies
Routing traces.
Thought for 17 sec — Identifying routing issues
Routing traces.
Thought for a moment — Evaluating clean nets
Routing traces.
Thought for 44 sec — Resolving network conflicts
Routing traces.
Routing traces.
Thought for a moment — Considering routing options
Routing traces.
Thinking...
U3
U2
J2 CC2 - R5 P1
J2 CC2 - R5 P1
J2 CC1 - R4 P1
S1 NO - U1 VCC
J1 POS - S1 COM
U2 VDDA - C4 P1
S1 NO - U1 VCC
J2 DN1 - J2 DN2
J2 VBUS_1 - J2 VBUS_2
J2 CC1 - R4 P1
S1 NO - U1 VCC
S1 NO - U1 VCC
U2 VDDA - C4 P1
U2 VDDA - C4 P1
J2 DP1 - J2 DP2
J2 DN1 - J2 DN2
R1 P2 - R2 P1
R2 P2 - U1 THR
J2 VBUS_4 - C8 P1
J1 POS - S1 COM
U2 VDDA - C4 P1
J2 DN1 - J2 DN2
J2 DP1 - J2 DP2
U2 VDDA - C4 P1
U1 Q - R3 P1
U2 NRST - R7 P2
R2 P2 - U1 THR
U1 CV - C3 P1
R2 P2 - U1 THR
S1 NO - U1 VCC
U2 NRST - R7 P2
R2 P2 - U1 THR
GND
R3 P2 - D1 A
U2 NRST - R7 P2
U2 BOOT0 - R6 P1
R3 P2 - D1 A
J2 DP1 - J2 DP2
J2 VBUS_4 - C8 P1
U2 VDDA - C4 P1
J2 VBUS_1 - J2 VBUS_2
U2 BOOT0 - R6 P1
R1 P2 - R2 P1
R1 P2 - R2 P1
U1 CV - C3 P1
U1 Q - R3 P1
J2 DUMMY_4 - R4 P2
C6
Capacitance
100nF
C3
Capacitance
10nF
J2 DUMMY_4 - R4 P2
J2 DUMMY_4 - R4 P2
GND
J2 GND_1 - J2 GND_2
J2 GND_4 - J2 SBU1
GND
C4
Capacitance
100nF
U2 VSSA - U2 VBAT
C5
Capacitance
100nF
J2 DUMMY_4 - R4 P2
GND
J2 DUMMY_4 - R4 P2
U2 VSSA - U2 VBAT
GND
J2 GND_4 - J2 SBU1
GND
J2 GND_4 - J2 SBU1
J2 DUMMY_4 - R4 P2
C8
Capacitance
10uF
J2 DUMMY_4 - R4 P2
C7
Capacitance
1uF
GND
C9
Capacitance
100nF
J2 DUMMY_4 - R4 P2
U2 VSSA - U2 VBAT
U2 VSSA - U2 VBAT
J2 GND_1 - J2 GND_2
J2 GND_4 - J2 SBU1
D1
R1
Resistance
10kΩ
S1
R3
Resistance
680Ω
R4
Resistance
5.1kΩ
R7
Resistance
10kΩ
U1
J1
R5
Resistance
5.1kΩ
R6
Resistance
10kΩ
R2
Resistance
68kΩ
J2

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Project Specification
Overview
A simple hand-solderable red LED blinker powered by a 9V battery through an on/off switch. The circuit uses an LM555 timer in astable mode to blink the LED at about 1 Hz.
Architecture
Diagram



  
    
  
  
    
  




















9V Battery
On Off Switch
Switched node_9V Rail
LM555 Astable Timer
LED Current Limiting Resistor
Red LED
GND
Timing Resistors
Timing Capacitor
Design Decisions
  • Use a through-hole LM555 in DIP-8 for easy hand soldering.
  • Use through-hole axial resistors and radial or disc capacitors for hand assembly.
  • Use a 5 mm through-hole red LED.
  • Use an SPST on/off switch in series with the battery positive lead.
  • Target oscillator frequency: about 1 Hz.
Initial Timing Choice
  • Astable equation: f = 1 / (0.693 x (R1 + 2R2) x C)
  • Initial values: R1 = 10k, R2 = 68k, C = 10uF
  • Estimated frequency: approximately 1 Hz
LED Drive Choice
  • Assume red LED forward voltage about 2 V and LM555 output drop about 0.2 V.
  • Choose LED current about 10 mA for visibility and battery life.
  • Initial resistor estimate: about 680 ohms.
Implementation Requirements
  • 9V battery input
  • On/off switch
  • 1 Hz blinking red LED
  • Hand-solderable through-hole components

  • Overview

  • Architecture

  • Design Decisions

  • Initial Timing Choice

  • LED Drive Choice

  • Implementation Requirements

Documents

Assets

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9V LED Blinker

9V LED Blinker thumbnail
9V LED blinker with added USB Type-C interface and STM32 microcontroller for future USB communication/programming

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$4.01–$6.93

Digi-Key

$13.70–$14.19

LCSC

$9.69

Mouser

$14.12

TME

$0.48

Verical

$8.67–$14.70

Controls