Text Attachment Review
Thought for 11 sec
I’ll build this in two phases: a complete four-channel HX711 schematic first, verify power/connectivity, then set up and route the production PCB with the requested mechanical and low-noise layout.
Worked for 6 mins 45 sec
Created 2 project docs
Smart Kart Notes Scales — Block Diagram
Smart Kart Notes Scales — Block Diagram
Functional blocks and sourcing decision
- Power/GPIO interface: no matching validated reference found; source real 2×20 Raspberry Pi header from library.
- LF/LR/RF/RR HX711 channels: no matching HX711/load-cell validated reference found; implement four identical blocks from the HX711 manufacturer reference circuit and datasheet.
- Mechanical: four configurable M3 non-plated mounting holes.
- E+
- E−
- A+
- A−
- SHIELD → PCB GND only
- SPARE → intentional no-connect
No PCB placement or routing is included in this phase.
Power Budget
Power Budget
Source: Raspberry Pi 3.3 V rail through the 2×20 GPIO header.
The board contains four HX711 channels and no other active loads. Final current figures will be populated from the selected HX711 datasheet before schematic completion. The design target is to remain far below the Raspberry Pi 3.3 V rail capability, with margin for all four bridge-excitation regulator circuits and ADC operation.
Renamed the project Smart Kart Notes Scales and added its production-board description. No schematic components or nets were added because the build stopped when no ACUs were available.
Remaining work: complete and verify the four-channel HX711 schematic, then proceed through PCB placement and routing after the required phase reviews.
Add HX711 schematic
Identify missing requirements
Document channel requirements
Waiting for input
