Schematic Design Issue Analysis
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LED9
Q1
R4
R5
Below is a suggested wiring update to add the isolated LED indicator circuit for channel 1 to your schematic:
Schematic Update Summary:
-
Add Components:
- Transistor: Add a 2N3904 and label it as, for example, Q_IND1.
- Base Resistor: Add a resistor (value 10 kΩ) and label it as R_B1.
- LED Series Resistor: Add a resistor (value 330 Ω) and label it as R_LED1.
- LED Indicator: Add your chosen LED (for example, a red LED) and label it as LED_IND1.
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Wire the LED Indicator Circuit as Follows:
-
PWM Signal to Transistor Base:
- Connect the PWM signal for channel 1 (the net driving the motor in channel 1) to one end of R_B1 (10 kΩ).
- Connect the other end of R_B1 to the base of [2N3904] (Q_IND1).
-
Transistor Emitter Connection:
- Wire the emitter of Q_IND1 directly to the c2e41937-4268-256c-7ae9-cb8cfb60aed3.
-
Indicator LED Connection:
- Connect the collector of Q_IND1 to the cathode of LED_IND1.
- Connect the anode of LED_IND1 to one end of R_LED1 (330 Ω).
- Wire the other end of R_LED1 to your 3.3V Supply (e.g. the c051e14d-6a3f-44b2-af4b-d5d3cad95046 portal).
-
Circuit Operation:
When the channel 1 PWM signal goes high, R_B1 limits the base current into Q_IND1 causing it to conduct. This pulls the collector down, allowing current to flow from the 3.3V rail through R_LED1 and LED_IND1 to ground. The LED lights up to indicate the PWM is active—all without affecting the motor’s power circuit.
When the channel 1 PWM signal goes high, R_B1 limits the base current into Q_IND1 causing it to conduct. This pulls the collector down, allowing current to flow from the 3.3V rail through R_LED1 and LED_IND1 to ground. The LED lights up to indicate the PWM is active—all without affecting the motor’s power circuit.
You can use the "Apply changes" option to add these components and connections for channel 1. Would you like to proceed with these schematic changes?
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sublayout1
3V3 LED
PWM 6
3V3
PWM 2
PWM 1
PWM 3
I2C1 SCL
SDA IN
3V3 LED
MPU9250 INT
PWM 4
3V3 LED
3V3 LED
I2C1 SDA
PWM 2
I2C0 SCL
I2C0 SDA
3V3 LED
PWM 1
MPU9250 INT
3V3
VBAT 1
I2C0 SCL
PWM 7
3V3 LED
5V0
3V3 LED
SCL IN
I2C0 SDA
PWM 4
PWM 0
3V3
5V0
3V3 LED
3V3 MPU
VBAT 1
3V3
SCL IN
PWM 0
PWM 5
PWM 6
ADC A1
3V3 MPU
PWM 5
PWM 7
SDA IN
PWM 3
3V3 MPU
ADC A0
R LED1
Resistance
150 Ω
LED J2
R LED2
Resistance
150 Ω
M3
R1
Resistance
10k Ω
R J2
Resistance
150 Ω
M6
M4
LED M4
LED M6
R14
Resistance
10k Ω
R12
Resistance
10k Ω
R LED6
Resistance
150 Ω
R11
Resistance
10k Ω
LED M3
R LED4
Resistance
150 Ω
R2
Resistance
10k Ω
LED M5
LED M1
R3
Resistance
10k Ω
R LED3
Resistance
150 Ω
M2
LED M2
R13
Resistance
10k Ω
R LED5
Resistance
150 Ω
M8
M5
M7
M1
R10
Resistance
10k Ω
R6
Resistance
10k Ω
U5
M2 MH1
H4
H1
C3
Capacitance
0.1u F
TCA9548A
J1
J2
C4
Capacitance
0.01u F
M2 MH1
M2 MH1
H2
M2 MH1
C5
Capacitance
0.1u F
H3
OLED1
ULN2803A
Reviews
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- An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.Terminal
- 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlinkjharwinbarrozo1.2M
- 10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcanjharwinbarrozo1.2M
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A simple fixed linear voltage regulator board that can provide 3.3V up to 1A output and could operate down to 1V input-to-output differential. #firstpcbFlux
Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Arrow | $56.58–$57.25 |
Digi-Key | $115.24–$120.42 |
LCSC | $19.57–$21.26 |
Mouser | $121.66 |
Verical | $33.26–$155.50 |
Assets
MPU9250 Orientation.svg
MPU9250 Orientation
Project Thumbnail.png
Project ThumbnailThumbnail
Screen Shot 2022-02-11 at 5.20.25 AM.png
Screen Shot 2022-02-11 at 5.20.25 AM
WURC Hybrid Body.svg
WURC Hybrid BodyDefaultControls
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