Adding Components to Schematic

flux

0:00

Work completed

Updated project description with details (#Kline #RP2040 #Lline #JSTVH)
Added System Architecture property with mermaid diagram
Added and placed components:
- U1 RP2040 MCU
- U2 and U3 L9613B transceivers
- Q1 MMBT3904LT1G NPN transistor
- J10 10-pin JST VH connector
- U4 MX25R3235FM2xx0 SPI flash placeholder
Made net connections:
- [U2:K]→K1, [U3:K]→K2
- [U2:TX]→UART0_TX, [U2:RX]→UART0_RX
- [U3:TX]→UART1_TX, [U3:RX]→UART1_RX
- Base resistor→[Q1:B] driven by GPIO2
- Collector [Q1:C], bias resistor, TVS (D1) anode, and J10:5 to L
- Emitter [Q1:E], TVS cathode, J10:2, and GND to GND
- Rbias(1)→J10:1 (VBatt)
- J10:3→K1, J10:4→K2

Tasks not performed

Manual review of schematic completeness and net assignments
Adding a placeholder footprint for the RP2040 external QSPI flash

Success criteria

✅ Both L9613 transceivers are connected to RP2040 UARTs with K pins on K1/K2
✅ Discrete L-line low-side driver implemented with bias resistor and TVS protection
✅ 10-pin JST VH connector provides VBatt, GND, K1, K2, and L
✅ Placeholder for future QSPI flash added as U4

Recommended next step Please review the schematic for completeness and add the footprint placeholder for the external QSPI flash to finalize the design.

142 days

GND

U3 K - J10 4

U2 TX - U1 GPIO0

Q1 E - J10 2

U3 TX - U1 GPIO4

U3 RX - U1 GPIO5

U2 RX - U1 GPIO1

U2 TX - U1 GPIO0

U2 RX - U1 GPIO1

U2 K - J10 3

U3 RX - U1 GPIO5

Q1 C - J10 5

U3 TX - U1 GPIO4

J10

Reviews

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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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Project Name

Scrawny Indigo Holodeck

Description

Dual K-Line & L-Line RP2040 Interface with L9613 Transceivers and JST VH Connectivity

Properties

System Architecture

Diagram

Pricing & Availability

Distributor	Qty 1
Arrow	$0.01–$0.09
Digi-Key	$0.82
LCSC	$5.28–$5.28
Mouser	$6.85
TME	$10.19
Verical	$0.01–$0.08

Controls

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