Solar-Powered Dashboard Compass

Schematic is complete for the solar-powered FJ dashboard compass: solar/LiPo power path, 3.3 V rail, ATmega328PB, LIS3MDL compass sensor, TM1637 driver, and three individual 7-segment displays are wired.
I created supporting files: Power Analysis and Firmware Starter. Electrical/passive review is clean; remaining full-review issues are expected pre-layout airwires and generic passive MPN placeholders.
Ready to move into PCB layout sizing and placement?
Yes, move on to PCB layout sizing and placement.
I’ll size the board first, then place the components by functional block with the displays and connectors oriented for dashboard use. After placement I’ll run a layout review and stop before routing.
Processing was stopped.
Here's a summary of what I was working on: Assessing tasks and layout
I'm considering the current layout and thinking there might be some constraints I need to address. It could be helpful to focus on the top-only area for the moment. After that, I might need to review the layout again to ensure everything is in order. I'll also remember to update my to-do list with completed tasks and keep track of what's still in progress. Let’s keep it organized!
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Project Specification
Design Summary
Status: Draft / Review / Approved
Manufacturing target: Prototype / EVT / DVT / PVT / Production
Software / firmware: repository link

Scope
Purpose
In scope
Out of scope

System context

Requirements
Functional
Electrical
Mechanical / environmental

Key constraints

Dependencies and risks
Dependencies
Key risks

Validation
Success criteria
Planned checks

Release-facing notes
Expected deliverables
Special release notes

Change notes / open questions
Changes in this revision
Open questions
  • Design Summary

  • Scope

  • System context

  • Requirements

  • Functional

  • Electrical

  • Mechanical / environmental

  • Key constraints

  • Dependencies and risks

  • Validation

  • Release-facing notes

  • Change notes / open questions

Assets

Assets are files uploaded to this project which can be used in various ways.

FJ Solar Compass Display thumbnail
Solar-powered dashboard compass for an FJ with a 3-digit seven-segment direction display, magnetometer sensing, low-power MCU control, rechargeable battery storage, and solar charging.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$1.47–$1.57

Digi-Key

$13.32–$13.87

HQonline

$2.20

LCSC

$10.09–$19.40

Mouser

$14.05

TME

$11.73

Verical

$1.56–$17.52

Controls