Red LED Blinker Circuit Design
set project intent and sourced parts
1:41
Accessing knowledge base.
Analyzing the schematic.
Calculating.
Analyzing the schematic.
Searching library for: "NE555 timer IC for a simple 9V battery powered LED blinker, through-hole DIP-8 package, hand solderable, standard bipolar 555 suitable for astable oscillator around 1 Hz"
Searching library for: "2-pin through-hole connector for 9V battery clip leads, 2.54mm or similar hand solderable PCB connector suitable for red and black battery wires"
Creating search plan for: "NE555 timer IC for a simple 9V battery powered LED blinker, through-hole DIP-8 package, hand solderable, standard bipolar 555 suitable for astable oscillator around 1 Hz --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging"] hitsPerPage: 10"
Creating search plan for: "2-pin through-hole connector for 9V battery clip leads, 2.54mm or similar hand solderable PCB connector suitable for red and black battery wires --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging"] hitsPerPage: 10"
Creating search plan for: "through-hole red LED 5mm or 3mm hand solderable standard indicator LED for 9V timer blinker --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging"] hitsPerPage: 10"
Searching: "SPST through-hole on off switch for low voltage 9V battery circuit, hand solderable, simple PCB mounted slide or toggle switch --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging"] hitsPerPage: 10"
Searching: "2-pin through-hole PCB connector for 9V battery clip leads, ~2.54mm pitch, hand-solderable, for red and black wires"
Found 21 results.
Searching: "Through-hole bipolar 555 timer in DIP-8 package for a 9V battery-powered astable oscillator ~1 Hz (hand-solderable)"
Searching: "Through-hole red indicator LED (5mm or 3mm), hand-solderable, for a 9V timer/blinker: ~2V forward voltage, usable at 2–20 mA, standard clear/diffused lens, common manufacturers (Kingbright, Everlight, Lite-On), prefer simple low-cost indicator LED."
Searching: "NE555 timer IC for a simple 9V battery powered LED blinker, through-hole DIP-8 package, hand solderable, standard bipolar 555 suitable for astable oscillator around 1 Hz --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging"] hitsPerPage: 10"
Searching: "through-hole red LED 5mm or 3mm hand solderable standard indicator LED for 9V timer blinker --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging"] hitsPerPage: 10"
Searching: "PCB-mounted, through-hole, hand-solderable SPST on/off switch (slide or toggle) for low-voltage 9V battery circuit; single pole single throw, panel/PCB mount, typical small footprint"
Searching: "SPST through-hole on off switch for low voltage 9V battery circuit, hand solderable, simple PCB mounted slide or toggle switch --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","specifications","availability","packaging"] hitsPerPage: 10"
Renamed project
0:01
Renamed to: "9V NE555 LED Blinker"
Updated project description
Updated to: "9V battery-powered NE555 astable LED blinker (~1 Hz) with on/off switch; through-hole hand-solderable parts."
Added 11 components and Removed 2 components
0:02
Added 1x 967 half good as J1 (Pins: NEG, POS)
Added 1x SPDT Toggle Switch on-none-on as SW1 (Pins: 1, 3, 2)
Added 1x NE555P - 518340 as U1 (Pins: R, GND, DIS, THR, Q, CV, TR, VCC)
Added 3x Generic Resistor as R1, R2, R3 (Pins: P2, P1)
Added 4x Generic Capacitor as C1, C2, C3, C4 (Pins: P1, P2)
Added 1x LTL-307EE as LED1 (Pins: K, A)
Removed U1
Removed J1
⚠️ Removed components had their net connections destroyed. Use the connections tool with a `view` action to verify connectivity and re-wire any lost connections.
Execution stopped by user.
1:50
Started: replacing old esp32 with blinker parts
wired ne555 astable and led stage
0:44
Analyzing the schematic.
Updated 8 connections
0:04
Connected J1:NEG, U1:GND, C1:P2, C2:P2, C3:P2, C4:P2, LED1:K to ^GND
Connected J1:POS, SW1:2 to ^BAT_POS
Connected SW1:1, U1:VCC, U1:R, R1:P1, C1:P1, C4:P1 to ^+9V_SW
Connected R1:P2, R2:P1, U1:DIS to ^DISCH_NODE
Connected R2:P2, U1:THR, U1:TR, C2:P1 to ^TIMING_NODE
Connected U1:CV, C3:P1 to ^CTRL_BYPASS
Connected U1:Q, R3:P1 to ^LED_DRIVE
Connected R3:P2, LED1:A to ^LED_SERIES
nets {
net GND = J1:NEG, GND:GND, LED1:K, C4:P2, C3:P2, C2:P2, C1:P2, U1:GND;
net BAT_POS = J1:POS, SW1:2;
net +9V_SW = SW1:1, C4:P1, C1:P1, R1:P1, U1:R, U1:VCC;
net DISCH_NODE = R1:P2, U1:DIS, R2:P1;
net TIMING_NODE = R2:P2, C2:P1, U1:TR, U1:THR;
net CTRL_BYPASS = U1:CV, C3:P1;
net LED_DRIVE = U1:Q, R3:P1;
net LED_SERIES = R3:P2, LED1:A;
}
verified values and sized the board
0:39
Calculating.
Running design review.
Analyzing the schematic.
Working.
Updated 7 layout rules
Set Layout's sizeX to "50mm"
Set Layout's sizeY to "50mm"
Set Layout's boardShape to "rectangle"
Set Layout's cornerRadius to "2mm"
Set Layout's stackup to "Standard 2 Layer"
Set Layout's boardInsetMargin to "0.3mm"
Set Layout's keepOut to "0.3mm"
Set Voltage Rating to "16V" on C1 and C2, Set Voltage Rating to "50V" on C3 and C4, and 1 more change
Set C1's Voltage Rating to "16V"
Set C2's Voltage Rating to "16V"
Set C3's Voltage Rating to "50V"
Set C4's Voltage Rating to "50V"
Set R1's Power Rating to "0.25W"
Set R2's Power Rating to "0.25W"
Set R3's Power Rating to "0.25W"
Updated 1 connection
Connected SW1:3, SW1:1 to ^Net 1
nets {
net BAT_POS = SW1:2, J1:POS;
net Net 1 = SW1:3, SW1:1;
}
Execution stopped by user.
0:07
Analyzing the PCB layout.
Started: final review of schematic and layout
Ready to start.
Show Plan
- Target blink frequency: approximately 1 Hz
- Timer topology: NE555 astable oscillator
- Timing values selected: R1 = 10k, R2 = 68k, C = 10uF
- Calculated frequency: 1.44 / ((10k + 2 x 68k) x 10uF) = 0.9863 Hz
- LED series resistor selected: 1k for comfortable brightness from a 9V-powered output stage
- Supply stabilization: 47uF bulk capacitor across switched 9V rail
- Local bypassing: 100nF from VCC to GND at the NE555 and 10nF from CTRL to GND
- Hand-solderable choices: DIP-8 NE555, through-hole switch, through-hole battery connector, axial resistors, radial/disc capacitors, 5mm through-hole LED
9V NE555 LED Blinker
Reviews
Documents
design-notes
Assets
Assets are files uploaded to this project which can be used in various ways.
Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Arrow | $0.30–$0.40 |
Digi-Key | $3.67–$4.16 |
LCSC | $5.57 |
Mouser | $5.10 |
TME | $4.21 |
Verical | $4.28–$5.42 |
Controls
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