Smart Medication Dispenser Design

Thought

flux

Work completed

Project description updated to “Smart Medication Dispenser Controller – ESP32-Based with Dual Stepper Drivers, DS3231 RTC, Robust 12 V Power Tree, and Comprehensive Sensor/UI Interfaces”.
Added major ICs:
- U1 as U1
- IC1, IC2, IC3, IC4, IC5, IC6 as IC1–IC6
- U3 as U3 and J1 as J1
Added power components:
- Reverse-polarity protection and TVS diode on the 12 V input
- 5 V switch-mode buck converter stage
- SGM2212-3.3XKC3G/TR as U2 for 3.3 V LDO

Tasks not done

Creating or saving the mermaid system architecture diagram (star-ground, domains) — you’ll need to supply that diagram manually.
Adding the NPN transistor for the buzzer driver.
Populating supporting passives:
- Bulk (100 µF) and high-frequency decoupling caps (0.1 µF, 1 µF)
- Buck converter inductors
- I2C pull-ups (4.7 kΩ)
- Flyback diode for the buzzer
- RC-debounce footprints for the reed switch (DNP)
Adding connectors and headers:
- 12 V barrel jack and motor (VMOT) connectors
- I2C, UART, GPIO expansion, programming header, I2C OLED header
Wiring nets (power rails, I2C, STEP/DIR, sensors, LEDs, buzzer)
Schematic ERC and layout preparation (stackup, board shape, star-ground copper pour)

Success criteria review

Complete schematic coverage: ❌ not yet (passives, connectors, net wiring missing)
PCB layout (100×80 mm, motor/logic segregation, star-ground, trace widths): ❌ not yet

Next recommended step Add the NPN transistor and flyback diode for the piezo buzzer driver, then proceed with placing all supporting passives in the power subsystem.

Flux stopped

Files

Code

Pins

Symbol

Layout

Preview

Resistance

Inductance

IC5

IC1

IC2

IC6

IC3

Inductance

IC4

Resistance

IC2

IC1

Name

Pin #

Type

Part Type

Terminal Order

Unspecified

Terminal

Unspecified

Terminal

Generic Capacitor