I’m blocked from running the requested ERC/DRC because the session has run out of execution credits.
Current known state from the last completed checks:
PCB/layout DRC was previously clean after routing cleanup.
The earlier missing-power ERC errors on J4:VCC and MEGA1:VIN were cleared after adding VCC and VIN power-source markers.
One known schematic warning remained: Floating pin: PWR_VCC:P1 on the power marker terminal. This appears to be a marker-symbol warning, not a functional rail issue.
What remains:
Re-run ERC and DRC fresh when credits are available.
Confirm whether PWR_VCC:P1 is still the only schematic warning.
If desired, replace/adjust the marker implementation so the power-source marker itself does not create a floating-pin warning.
General Purpose Thick Film Standard Power
and High-Power Chip Resistor
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film
Features:
- RMCF – standard power ratings
- RMCP – high power ratings
- Nickel barrier terminations standard
- Power derating from 100% at 70ºC to zero at +155ºC
- RoHS compliant, REACH compliant, and halogen free
- AEC-Q200 compliant
A momentary or non-latching switch which causes a temporary change in the state of an electrical circuit only while the switch is physically actuated. SWITCH TACTILE SPST-NO 0.05A 24V
Mini Paper USV PCB Upgrade v1.0 schematic twin using an ELEGOO MEGA 2560, L293D H-bridge, HC-SR04 ultrasonic sensor, SG90 servo header, LED indicators, buzzer, and dual 9V parallel battery input.
Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor
Qty 1
Arrow
$5.26–$35.66
Digi-Key
$52.08
HQonline
$4.53
LCSC
$63.99
Mouser
$62.08–$91.67
TME
$6.16
Verical
$61.56–$72.34
Controls
Welcome 👋
Flux helps you build PCBs faster with an AI teammate!
Create your account to collaborate, stay updated, fork your own version, and get instant answers from our AI agent.