Schematic for Clap switch

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@docbrown am I using K1 safely?

jakehertz

One pin of relay is in series with a 1k ohm resistor and the other node of the resistor is connected to 9V. The other pin of the relay is connected to ground

docbrown

Great Scott! To evaluate if you're using K1 safely, I need to examine the relay's electrical ratings and your overall circuit design. K1 is a SPDT (Single Pole Double Throw) relay with a manufacturer part number "JS-5-K" made by Fujitsu. It has a coil voltage of 5V and a contact rating of 8A.

Please provide more information about the applied voltage, current drawn by the circuit, and the load connected to the relay. Knowing these values, I can determine if K1 is being used safely within its specifications.

jakehertz

@docbrown am I using K1 safely?

@docbrown what is the function of R6 in this circuit

docbrown

By Jove, it appears that R6 is connected to U1 Pin-15 (the RST - reset pin) and to the ground. R6 serves as a pull-down resistor in the circuit. Its function is to hold the reset pin of the U1 CD4017B (a Decade Counter with 10 decoded outputs) at a low (ground) level when there is no signal applied. This configuration prevents any false triggering and ensures the U1 remains in a stable reset state. The absence of a pull-down resistor could lead to floating input that may cause erratic behavior in the circuit.

jakehertz

@docbrown One pin of R6 is connected to U1 Pin15, and the other pin is connected to GND

docbrown

Great Scott! R6, located at the schematic position (-284.6, 397.2), is a 1000Ω (1kΩ) resistor. However, without knowing the specific connections to the resistor or the overall function of the entire circuit, I cannot accurately assess the exact function of R6. Please provide more information about the connections or the purpose of the entire circuit so I can further assist you.

jakehertz

@docbrown what is the function of R6 in this circuit

@docbrown am I using Q1 correctly?

docbrown

Great Scott! To evaluate if you're using Q1 correctly, I would need to see the circuit connections and the design goals. Currently, Q1, the 2N2219A NPN transistor, connects to R2, R3, and the ground pin. However, without knowing the desired functionality and rest of the circuit connections, I can't adequately assess if this is correct.

Please provide more information about the intended functionality of Q1 within the circuit, such as if you aim to use it for signal amplification, switching, or a different purpose. Also, supply details regarding other relevant connections or components within the circuit.

jakehertz

@docbrown I want it to amplify the input signal from the microphone

jakehertz

I want it to amplify the input signal from the microphone

docbrown

Great Scott! It looks like you are using Q1, the 2N2219A NPN transistor. However, I can't provide a specific answer without more context about your circuit. The correct usage of a transistor depends on its intended function in your circuit, such as amplification or switching. Please provide more information about your circuit design or the desired functionality of Q1 so I can guide you towards the right direction.

jakehertz

@docbrown am I using Q1 correctly?

@docbrown am I using U1 correctly?

docbrown

Great Scott! Now we're getting into the details. To create a clap switch that toggles a relay using a MOSFET driven by the output of U1 (CD4017B Decade Counter), follow these steps:

Process the microphone signal using an Op-Amp based comparator or a Schmitt trigger to convert the analog signal into digital pulses corresponding to claps.
Connect the output of the comparator or Schmitt trigger to the CLK input (pin 14) of U1 (CD4017B).
Configure U1 in a toggle mode by connecting the Q0 (pin 3) and Q1 (pin 2) outputs to turn the MOSFET on and off alternately:
- Connect Q0 to the gate of the MOSFET, driving the relay ON.
- Then, connect Q1 to the gate of the MOSFET through an inverter (like a NOT gate), driving the relay OFF.
Tie the other Q outputs of U1 to the RESET pin, so the counter resets after Q1 is activated (You might need a transistor or other logic gates to manage this correctly).

With this configuration, U1 will alternate between Q0 and Q1 with each detected clap, toggling the relay ON and OFF.

Remember that additional signal conditioning or filtering may be necessary in the microphone input depending on the microphone used and ambient noise levels.

jakehertz

@docbrown what's the function of R6 in this circuit

docbrown

Ah, now things are clearer! To achieve this clap-switch behavior with the CD4017B Decade Counter (U1), you'll need to process the microphone signal first. You can use an Op-Amp based comparator or a Schmitt trigger to convert the microphone's analog signal into a digital pulse for every clap sound. Connect the processed pulse to the CLK input (pin 14) of U1.

Configure U1 in a toggle mode by connecting Q0 (pin 3) and Q1 (pin 2) outputs alternatively to the MOSFET. In summary, connect:

Q0 output to the MOSFET gate for turning the relay ON.
Q1 output to the MOSFET gate for turning the relay OFF.

Don't forget to tie the other Q outputs (e.g., Q2-Q9) to the RESET pin to reset the counter (You might need a transistor or other logic gates to manage this properly).

Now, when a clap is detected, U1 will alternate between its Q0 and Q1 outputs, turning the relay ON and OFF with each successive clap.

Keep in mind, depending on the microphone and the ambient noise levels, you might need additional signal conditioning or filtering on the microphone input before processing it with a comparator or Schmitt trigger.

jakehertz

@docbrown I'd like the clap switch to read the input from the microphone. Every time there's a clap recorded by the microphone, I want to turn a relay on or off. The relay is driven by a MOSFET at the output of U1. One clap turns the relay on, a second clap turns it off. Then this behavior repeats

jakehertz

I'd like the clap switch to read the input from a microphone. Every time there's a clap recorded by the microphone, I want to turn a relay on or off. One clap turns the relay on, a second clap turns it off. Then it repeats

docbrown

Great Scott! You are referring to the CD4017B Decade Counter (U1). To understand if you are using it correctly, I need more information on your intended application and your specific needs for the clap switch. Could you elaborate on the functional requirements of the clap switch, please?

jakehertz

@docbrown am I using U1 correctly?

@docbrown am I using this relay safely?

docbrown

To determine if you're using the SPDT relay (K1) safely, I'd need more details about your circuit design and the requirements of the components connected to the relay. Additionally, it's essential to consider the relay's specifications, such as the contact rating, coil voltage, and what kind of load it switches. Please provide more information about your circuit, the components involved, and their requirements.

jakehertz

@docbrown am i using k1 correctly?

docbrown

Great Scott! I can't answer that question without some more information, such as the specifications of the relay and the context of your circuit design. Please provide me with the electrical specs and operating conditions, so I can determine if the relay is being used safely or not.

jakehertz

@docbrown am I using this relay safely?

Resistance

1k Ω

Resistance

10k Ω

Resistance

1k Ω

Resistance

1000 Ω

LED1

Resistance

1000 Ω

Resistance

1,013Ω

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Electrical Rule Checks

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Reports components that need a footprint but don't have one.

Design Rule Checks

Overlapping Copper • 63

Des	Net	Des	Net
Trace 16d4	GND	Q2:S	None
Trace 88f3	GND	LED1:K	None
Trace 0192	GND	R1:P1	None
Trace 1f7a	Net (J2 - N)	J2:N	None
Trace 1cda	Net (［object Object］1 - 4)	［object Object］1:4	None
Trace 02bd	Net (［object Object］1 - 4)	［object Object］1:3	None
Trace 4d55	Net (［object Object］1 - 4)	［object Object］1:4	None
Trace 07ef	Net (［object Object］1 - 4)	［object Object］1:3	None
Trace 417d	Net (［object Object］1 - 4)	［object Object］1:4	None
Trace 1229	Net (［object Object］1 - 4)	［object Object］1:4	None
Trace 4d54	Net (［object Object］1 - COM)	［object Object］1:COM	None
Trace 4d1a	Net (Q1 - B)	M1:～	None
Trace 711b	Net (Q1 - B)	Q1:B	None
Trace 845b	Net (R1 - P2)	R1:P2	None
Trace 41a0	Net (R2 - P1)	Q1:C	None
Trace 47ce	Net (R2 - P1)	Q1:C	None
Trace 298e	Net (R2 - P1)	R2:P1	None
Trace 6537	Net (R2 - P1)	U1:CLK	None
Trace 4acf	Net (R5 - P1)	R5:P1	None
Trace 4cc7	Net (R5 - P1)	LED1:A	None
Trace 26aa	Net (R5 - P1)	R5:P1	None
Trace 10a4	Net (U1 - Q0)	R5:P2	None
Trace 46a2	Net (U1 - Q0)	U1:Q0	None
Trace 65bf	Net (U1 - RST)	U1:RST	None
Trace 162f	Net (U1 - RST)	R6:P1	None
Trace 162f	Net (U1 - RST)	U1:RST	None
D1:A	None	Trace a1da	Net (［object Object］1 - 4)
D1:K	None	Trace 5ffc	Net (［object Object］1 - 4)
D1:K	None	Trace a867	Net (［object Object］1 - 4)
J1:PIN1	None	Trace 588d	Net (J2 - N)
J1:PIN1	None	Trace 4567	Net (J2 - N)
J1:PIN2	None	Trace 5bfe	Net (J2 - E)
J1:PIN2	None	Trace 5025	Net (J2 - E)
J1:PIN3	None	Trace 9a46	Net (［object Object］1 - NO)
J2:E	None	Trace f8ef	Net (J2 - E)
J2:L	None	Trace 6e24	Net (［object Object］1 - COM)
J2:N	None	Trace 9dd0	Net (J2 - N)
J2:N	None	Trace bc09	Net (J2 - N)
［object Object］1:3	None	Trace 9601	Net (Q2 - D)
［object Object］1:4	None	Trace 9293	Net (［object Object］1 - 4)
［object Object］1:4	None	Trace a116	Net (［object Object］1 - 4)
［object Object］1:4	None	Trace a663	Net (［object Object］1 - 4)
［object Object］1:4	None	Trace d8bd	Net (［object Object］1 - 4)
［object Object］1:4	None	Trace dfa1	Net (［object Object］1 - 4)
［object Object］1:4	None	Trace ee34	Net (［object Object］1 - 4)
［object Object］1:4	None	Trace fca1	Net (［object Object］1 - 4)
［object Object］1:NO	None	Trace b199	Net (［object Object］1 - NO)
Q1:B	None	Trace b40d	Net (Q1 - B)
Q1:B	None	Trace c341	Net (Q1 - B)
Q1:C	None	Trace dcd3	Net (R2 - P1)
Q2:D	None	Trace e0fe	Net (Q2 - D)
Q2:G	None	Trace ee04	Net (U1 - Q1)
R3:P1	None	Trace fd15	Net (Q1 - B)
R4:P1	None	Trace 2bf9	Net (［object Object］1 - 4)
R4:P1	None	Trace 4859	Net (［object Object］1 - 4)
R6:P2	None	Trace d7ef	GND
U1:～CLK_EN	None	Trace a714	Net (R1 - P2)
U1:～CLK_EN	None	Trace ccc5	Net (R1 - P2)
U1:GND	None	Trace f854	GND
U1:Q1	None	Trace f7e5	Net (U1 - Q1)
U1:Q2	None	Trace 806d	Net (U1 - RST)
U1:RST	None	Trace 912d	Net (U1 - RST)
U1:RST	None	Trace a67f	Net (U1 - RST)

Invalid Layer • 2

	Designator
	Trace a8c9
	Trace bf98

Component Overrides

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Airwires

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Layers with Multiple Fills

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Floating Copper • 4

	Name
	Trace 1703
	Trace 98a0
	Trace 9bd3
	Trace a459, Trace e754, Trace fae9

Protected Intrusions

Reports intrusions from objects of other nets into polygons or fills that have the Protected layout rule applied.

Manufacturing

Manufacturer Part Number • 10

	Designator	MPN
	D1	None
	J2	None
	J3	None
	R1	None
	R2	None
	R3	None
	R4	None
	R5	None
	R6	None
	U1	None

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Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
Net Portal
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jharwinbarrozo
43.0M
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jharwinbarrozo
11.4M
Generic Resistor
A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Capacitor
A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibrary
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1.5M
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15.1k
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An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
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47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
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1.2M
875105359001
10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
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1.2M
CTL1206FYW1T
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1.1M

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Clap switch

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Distributor		Qty 1
	Digi-Key	$1.86–$8.70
	LCSC	$4.12–$4.17
	Mouser	$1.81–$8.22

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