I’ll design the solar-powered dashboard compass schematic from scratch: define the architecture, select library parts for the MCU/compass/display/power blocks, wire the circuit with required support passives, then run ERC review and fix issues before stopping at the schematic→layout checkpoint.
I selected the main architecture: solar input → LiPo charge/power path → 3.3 V regulator → low-power MCU, I2C magnetometer, TM1637 display driver, and three single-digit 7-segment displays. I’m checking the IC datasheets now so the support passives and wiring are grounded in the manufacturers’ circuits.
Working for 3 days 15 hrs...
87 days
Reading ATSAMD10C13A-SS datasheet for ATSAMD10C13A pin table power supply pins.
Read LIS3MDLTR datasheet for LIS3MDLTR pinout I2C application circuit.
Read MCP73871 datasheet for MCP73871 typical application circuit sol.
Read MCP1700T-3302E-TT datasheet for MCP1700T-3302E-TT pinout input output ca.
Read TM1637 datasheet for TM1637 pinout typical application circui.
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