Project Ideas for Electronics

flux

1:41

Reviewing schematic correctness.

Examining net connections.

Analyzing connections and voltages.

Identifying wiring errors.

Analyzing the schematic.

Running design review.

Accessing knowledge base.

Fixing schematic issues.

Short answer: not yet. I see a few blocking issues in your Flux schematic.
  • 555 timing node is wrong
    • IC3 and IC3 are tied to GND (Net 27). They must connect to the timing node (Net 31), the same node as IC3, R1, and VR2.
    • C4 has both pins on GND; move one side to the timing node (Net 31) and keep the other on GND. That will let the 555 oscillate.
  • CD4017 carry-out shorted
    • IC2 is tied to GND (Net 27). It is an output and must be left unconnected (or used), not grounded. Keeping IC2 and IC2 at GND is fine for continuous running.
  • Decoupling caps missing
    • Add a 100 nF between IC3 and another 100 nF between IC2, placed close to the pins. Example part: 100nF Capacitor.
  • LED resistor values inconsistent
    • R14 and R21 are set to 2 Ω while the others (e.g., R13, R15, R16, R17, R19, R20, R22) are 220 Ω. 2 Ω is effectively a short for a 5 V LED string and will overdrive the LED/output—set them to match the others.
Notes from checks
  • ERC reports “Missing Power” on IC2 and IC3. Your nets show power on Net 41; just make sure your supply symbol V2 orientation and net naming are correct (e.g., rename Net 41 to “VCC/5V”) so ERC recognizes it.
If you want, I can apply these fixes to the schematic and add the two 100 nF caps for you.
Fix 555 timing node
Check 4017 output nets
Pick decoupling parts
Validate LED resistors
66 days
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    LED Chaser

    LED Chaser thumbnail
    LED Chaser with 555 timer that sequentially lights up a series of LEDs in a chaser pattern. Adjustable using a potentiometer.

    Properties

    Properties describe core aspects of the project.

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $0.95–$1.35

    Digi-Key

    $1.98–$3.11

    LCSC

    $2.15–$3.85

    Mouser

    $2.51

    Verical

    $1.24–$2.40

    Controls