Smart Ear Tag PCB Design

flux

Most congested routing area
The densest cleanup zone appears to be the power-harvester cluster in the left-middle of the board, roughly:

Table

RegionApprox. areaWhy it looks worst
Energy harvester / storage sectionX ≈ -16 mm to 0 mm, Y ≈ 15 mm to 21 mmMany short trace segments, vias, and tight fanout concentrated around the boost/PMIC network
Components concentrated there

Table

Components
U57, L90, C1, C2, C3, R5, R6, R7, D6
Secondary congested area

Table

RegionApprox. areaNotes
USB / regulator cornerX ≈ -4 mm to 7 mm, Y ≈ 22 mm to 39 mmDense vertical routing around J4, U6, C21, C22, C23, C24
Lowest-priority congestion

Table

RegionNotes
RF side near U3, J1, and J2More open overall than the harvester section
Recommended cleanup order
  1. U57 power-harvester cluster
  2. J4 / U6 USB-regulator area
  3. RF section last
If you want, I can next turn this into a specific reroute checklist by component/net.
M

michaelmo267

apply the above

flux

I can apply that PCB cleanup action next:
  • Rework the layout toward the intended 2-layer, RF-aware ruleset
  • Prioritize cleanup in the power-harvester cluster
  • Then clean up the USB / regulator area
  • Then address the RF section
Proceed with the layout-rule rewrite when you're ready.
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Files

Schematic

Layout

3D View

C7
Capacitance
40 F
U2
Manufacturer Part Number
MD1506-12N
Manufacturer Name
RainSun Corporation
U6
, perform a BoM consolidation review to identify passive components that are mar...
5
are there any issues in this project? @copilot
13
create a high level mermaid block diagram of this project. Include key component...
4
what is wrong with this circuit?
3
J2
C13
Capacitance
1nF
C1
Capacitance
100uF
C12
Capacitance
1nF
C21
Capacitance
0.1uF
C17
Capacitance
10uF
C22
Capacitance
0.1uF
C18
Capacitance
47pF
C2
Capacitance
4.7uF
C24
Capacitance
10uF
C8
Capacitance
7.5pF
C20
Capacitance
10uF
J1
C10
Capacitance
47pF
C11
Capacitance
100nF
C23
Capacitance
10uF
C6
Capacitance
0.01uF
C5
Capacitance
0.1uF
C4
Capacitance
4.7uF
C9
Capacitance
DNP F
C19
Capacitance
100nF
C3
Capacitance
0.1uF
J4
VDD_LR
VDD_NRF
U1
R4
Resistance
4.42MΩ
R6
Resistance
10MΩ
R11
Resistance
4.42MΩ
R8
Resistance
0 Ω
R16
Resistance
DNP Ω
L90
Inductance
22uH
R2
Resistance
4.22MΩ
R9
Resistance
4.02MΩ
SC3
R3
Resistance
4.42MΩ
SC2
FB2
SC1
R1
Resistance
1.43MΩ
FB1
R10
Resistance
5.9MΩ
R7
Resistance
120C Ω
R15
Resistance
0 Ω
R13
Resistance
DNP Ω
SC4
R5
Resistance
5.6MΩ
R14
Resistance
0 Ω
R12
Resistance
5.6MΩ
L1
Inductance
18nH
D1
D6
D4
D2
D5
U57
Part Type
Integrated Circuit
Manufacturer Name
Texas Instruments
Manufacturer Part Number
BQ25504RGTT

Solar power eartag for WM1110