Wireless Water Level Transmitter PCB Design

0:00

Work done
  • Built the full schematic for the 4-level probe sensor + encoder + RF TX:
    • Comparator block: IC1 powered from +5 V with 2.5 V reference divider R5/R6, probe series resistors R7-R10, pulldowns R11-R14, and outputs to LEDs and encoder.
    • Encoder block: U1 with oscillator resistor R19, inputs from comparator outputs, and data out to RF.
    • RF block: U2 with DATA driven by U1.
    • Probe connector: CN1 for C/L1/L2/L3/L4.
    • Decoupling/bulk: C1 10 uF bulk and C2/C3/C4 100 nF (one per IC).
Success criteria review
  • ✅ Schematic implements 4 conductive probe levels, 4 LED outputs, EV1527 encoding, and SYN115/F115 TX data path.
  • ❌ PCB physical requirements not fully implemented yet: I cannot set board outline/stackup/trace-width rules because the current PCB layout object did not expose any editable rulesets or board-outline node UID via the available @layout queries.
  • ❌ BOM availability is not fully satisfied yet: U1 and U2 show 0 LCSC stock in the BOM snapshot.
Next steps
  • If you open the PCB editor and select the board outline node (or tell me its node UID from the left tree), I can apply the required 70.0 mm x 50.0 mm outline and set trace-width rules.
  • If you want guaranteed JLC availability, I can also swap U1/U2 to in-stock alternatives and update the BOM.
66 days
Set board outline to 70mm x 50mm. Apply 0.4mm signal traces and 0.8mm power traces. Add GND copper pour except antenna corner.
66 days

0:56

Checking if I can make the changes for you.

I can take care of these PCB layout updates for you in one change set:
  • Set the PCB size (board outline) to 70 mm x 50 mm
  • Apply routing width rules: 0.4 mm for signal nets and 0.8 mm for power nets
  • Update the GND copper pour to exclude an antenna-corner keepout area
Run the proposed change set and tell me which corner you want reserved for the antenna keepout (top-right, top-left, bottom-right, bottom-left), if you have a preference.
66 days

Updated 5 layout rules

0:17

Set P1's solderPasteMaskExpansion to "-5cm

"- Set P1's padShape to "rectangle

"- Set P1's size to "3 80

"- Set P1's position to "11.4431mm -34.062mm

"- Set P4's padShape to "rectangle

"- Set P4's size to "3 60

"- Set P4's position to "-1.0464mm -23.9314mm

"- Set P3's padShape to "rectangle

"- Set P3's size to "3 40

"- Set P3's position to "-6.3965mm -13.9529mm

"- Set P5's padShape to "rectangle

"- Set P5's size to "3 80

"- Set P5's position to "4.2738mm -33.7872mm

"- Set P2's padShape to "rectangle

"- Set P2's size to "3 20

"- Set P2's position to "-11.4821mm -4.0574mm

"

66 days

Line: 8:8: Cannot find name 'V'.Line: 10:20: An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type.Line: 10:21: Cannot find name 'LED'.Line: 10:25: Cannot find name 'RED'.Line: 10:33: An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type.Line: 10:35: Cannot find name 'k'.Line: 10:44: Cannot find name 'BC547'.Line: 10:51: Cannot find name 'EMPTY'.Line: 10:57: Cannot find name 'transistor'.Line: 10:69: Cannot find name 'Collector'.Line: 12:30: An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type.Line: 12:31: Cannot find name 'Buzzer'.Line: 12:38: Cannot find name 'EMPTY'.Line: 14:40: An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type.Line: 14:41: Cannot find name 'LED'.Line: 14:45: Cannot find name 'GREEN'.Line: 14:53: An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type.Line: 14:55: Cannot find name 'k'.Line: 14:64: Cannot find name 'BC547'.Line: 14:71: Cannot find name 'FULL'.Line: 14:76: Cannot find name 'transistor'.Line: 14:88: Cannot find name 'Collector'.Line: 16:50: An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type.Line: 16:51: Cannot find name 'Buzzer'.Line: 16:58: Cannot find name 'FULL'.Line: 18:45: Cannot find name 'SENSOR'.Line: 19:45: Cannot find name 'COM'.Line: 19:49: Cannot find name 'probe'.Line: 19:57: Cannot find name 'GND'.Line: 21:45: Cannot find name 'EMPTY'.Line: 21:51: Cannot find name 'probe'.Line: 21:61: An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type.Line: 21:64: Cannot find name 'k'.Line: 21:66: Cannot find name 'to'.Line: 21:69: Cannot find name 'GND'.Line: 21:78: Cannot find name 'BC547'.Line: 21:84: Cannot find name 'base'.Line: 21:90: Cannot find name 'via'.Line: 21:95: Cannot find name 'N4148'.Line: 21:101: Cannot find name 'diode'.Line: 22:45: Cannot find name 'FULL'.Line: 22:50: Cannot find name 'probe'.Line: 22:61: An arithmetic operand must be of type 'any', 'number', 'bigint' or an enum type.Line: 22:64: Cannot find name 'k'.Line: 22:66: Cannot find name 'to'.Line: 22:69: Cannot find name 'GND'.Line: 22:78: Cannot find name 'BC547'.Line: 22:84: Cannot find name 'base'.Line: 22:90: Cannot find name 'via'.Line: 22:95: Cannot find name 'N4148'.Line: 22:101: Cannot find name 'diode'.Line: 24:45: Cannot find name 'BC547'.Line: 24:51: Cannot find name 'emitters'.Line: 24:62: Cannot find name 'GND'.Line: 8:8: An identifier or keyword cannot immediately follow a numeric literal.Line: 10:18: Expression expected.Line: 10:25: ',' expected.Line: 10:29: ';' expected.Line: 10:31: Expression expected.Line: 10:35: An identifier or keyword cannot immediately follow a numeric literal.Line: 10:37: ';' expected.Line: 10:39: Expression expected.Line: 10:41: Expression expected.Line: 10:42: Expression expected.Line: 10:57: ',' expected.Line: 10:69: ';' expected.Line: 11:54: Expression expected.Line: 12:28: Expression expected.Line: 12:38: ',' expected.Line: 12:44: ';' expected.Line: 12:46: Expression expected.Line: 12:48: Expression expected.Line: 12:50: Expression expected.Line: 12:52: Expression expected.Line: 12:54: Expression expected.Line: 12:56: Expression expected.Line: 12:58: Expression expected.Line: 13:30: Expression expected.Line: 14:38: Expression expected.Line: 14:45: ',' expected.Line: 14:51: ';' expected.Line: 14:55: An identifier or keyword cannot immediately follow a numeric literal.Line: 14:57: ';' expected.Line: 14:59: Expression expected.Line: 14:61: Expression expected.Line: 14:62: Expression expected.Line: 14:76: ',' expected.Line: 14:88: ';' expected.Line: 16:48: Expression expected.Line: 16:58: ',' expected.Line: 16:63: ';' expected.Line: 16:65: Expression expected.Line: 16:67: Expression expected.Line: 16:69: Expression expected.Line: 16:71: Expression expected.Line: 16:73: Expression expected.Line: 16:75: Expression expected.Line: 18:52: ';' expected.Line: 19:45: Unexpected keyword or identifier.Line: 19:55: Invalid character.Line: 21:45: Unexpected keyword or identifier.Line: 21:57: Invalid character.Line: 21:60: Expression expected.Line: 21:64: An identifier or keyword cannot immediately follow a numeric literal.Line: 21:66: ',' expected.Line: 21:69: ',' expected.Line: 21:76: Invalid character.Line: 21:78: Unexpected keyword or identifier.Line: 21:95: An identifier or keyword cannot immediately follow a numeric literal.Line: 21:94: ',' expected.Line: 21:95: ',' expected.Line: 21:101: ',' expected.Line: 22:45: Unexpected keyword or identifier.Line: 22:57: Invalid character.Line: 22:60: Expression expected.Line: 22:64: An identifier or keyword cannot immediately follow a numeric literal.Line: 22:66: ',' expected.Line: 22:69: ',' expected.Line: 22:76: Invalid character.Line: 22:78: Unexpected keyword or identifier.Line: 22:95: An identifier or keyword cannot immediately follow a numeric literal.Line: 22:94: ',' expected.Line: 22:95: ',' expected.Line: 22:101: ',' expected.Line: 24:45: Unexpected keyword or identifier.Line: 24:60: Invalid character.


  • Ground
    A common return path for electric current. Commonly known as ground.
  • Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
  • Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
  • 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
  • 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
  • Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
  • RMCF0805JT47K0
    47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
  • 875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
  • CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
Water Level Indicator thumbnail
Daddy's first PCB. Measures the water level of a potted plant, displays the level using LEDs.

Properties

Pricing & Availability

Distributor

Qty 1

Arrow

$0.63–$1.40

Digi-Key

$1.26–$5.72

LCSC

$3.10–$7.03

Mouser

$2.32

TME

$1.93–$3.12

Verical

$1.92–$18.09

Controls