PA System Schematic Design

Thought

Work done

Audited the existing UART translator connections on U2, U3, and U4, confirming the original mapping: U2 IO17 -> UART_ESP_TX -> U4 A1, U2 IO16 -> UART_ESP_RX -> U4 A2, U3 P3-0/RXD -> UART_8051_RX -> U4 B1, U3 P3-1/TXD -> UART_8051_TX -> U4 B2, with VCCA/OE on +3V3, VCCB on +5V, and GND on GND.
Searched the library for the requested 12-pin HV/LV breakout module and confirmed the exact common module was not available; I also submitted a library coverage request for that module.
Rewired a newly added 12-terminal U4 replacement so the UART and power nets currently resolve as +5V -> VCCB, +3V3 -> VCCA/OE, GND -> GND, UART_ESP_TX -> A1, UART_8051_RX -> B1, UART_ESP_RX -> A2, and UART_8051_TX -> B2.

Success criteria review

✅ Existing UART and power connectivity for the original translator section was identified and preserved functionally.
✅ High-voltage UART side still maps to the 5 V U3 interface, and low-voltage UART side still maps to the 3.3 V U2 interface.
✅ Power distribution in the modified section still resolves to +5V, +3V3, and GND, and the targeted ERC checks reported no missing power, no single-pin nets, no undriven nets, and no pin-to-pin conflicts.
❌ The exact requested 12-pin HV/LV module with pins HV, HV1, HV2, HV3, HV4, GND, LV, LV1, LV2, LV3, LV4, GND is not placed in the schematic, because that exact module is not available in the library.
❌ The schematic now shows two U4 instances in context, so the replacement is not in a clean final state matching your plan.

Next steps I could not fully complete the exact module swap in this session. The remaining work is to remove the leftover original U4 instance and replace it with the exact 12-pin HV/LV module once that part exists in the library, then reconnect HV/LV/HV1/HV2/LV1/LV2 and mark unused channels. If the exact module becomes available, I can finish that mapping cleanly.

U3 RST - R1 P2

GND

R4 P2 - R5 P1

U2 IO15 - BZ1 +

U1 VO - IC1 INPUT

U2 IO2 - R6 P1

IC1 OUTPUT - IC1 VOUT

U2 GND - U3 VSS

U2 IO16 - U4 A2

U2 EN - R2 P2

U2 GND - U3 VSS

U5 IO - U2 IO4

U1 VO - IC1 INPUT

U3 P3-1/TXD - U4 B2

U3 P3-0/RXD - U4 B1

U5 IO - U2 IO4

U2 IO15 - BZ1 +

U2 GND - U3 VSS

IC1 OUTPUT - IC1 VOUT

U2 GND - U3 VSS

US1 ECHO - R4 P1

US1 TRIG - U2 IO5

GND

U3 XTAL2 - Y1 P2

US1 TRIG - U2 IO5

U2 GND - U3 VSS

IC1 OUTPUT - IC1 VOUT

US1 ECHO - R4 P1

R6 P2 - D1 A

U2 GND - U3 VSS

U3 P3-0/RXD - U4 B1

GND

U2 GND - U3 VSS

U5 IO - U2 IO4

R6 P2 - D1 A

GND

U2 GND - U3 VSS

U3 RST - R1 P2

U2 IO16 - U4 A2

U3 XTAL1 - Y1 P1

U2 GND - U3 VSS

GND

IC1 OUTPUT - IC1 VOUT

U2 IO17 - U4 A1

IC1 OUTPUT - IC1 VOUT

R4 P2 - R5 P1

U2 GND - U3 VSS

U1 VO - IC1 INPUT

U3 P3-1/TXD - U4 B2

U3 XTAL2 - Y1 P2

U2 GND - U3 VSS

U2 IO17 - U4 A1

U2 GND - U3 VSS

U1 VO - IC1 INPUT

IC1 OUTPUT - IC1 VOUT

U2 EN - R2 P2

U3 XTAL1 - Y1 P1

U3 XTAL2 - Y1 P2

U2 GND - U3 VSS

U3 RST - R1 P2

U3 XTAL1 - Y1 P1

U2 IO2 - R6 P1

IC1 OUTPUT - IC1 VOUT

U2 GND - U3 VSS

IC1 OUTPUT - IC1 VOUT

U1 VO - IC1 INPUT

Resistance

10kΩ

Capacitance

100nF

BZ1

US1

Resistance

330 Ω

C11

Capacitance

22pF

Capacitance

10uF

Capacitance

100nF

C10

Capacitance

10uF

Resistance

3.3kΩ

Resistance

10kΩ

Capacitance

100nF

Capacitance

100uF

Resistance

10kΩ

Resistance

1.8kΩ

IC1

Capacitance

100nF

Reviews

Generic Inductor
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jharwinbarrozo
16.1k
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, 10000uF 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, 220pF, 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
Generic Resistor
A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
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1.5M
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43.0M
RMCF0805JT47K0
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1.2M
875105359001
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1.2M
CTL1206FYW1T
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1.1M
1070TR
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jharwinbarrozo
700.5k

Project Name

Dual architecture UAV

Description

Welcome to your new project. Imagine what you can build here.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor	Qty 1

Controls

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