PCB Schematic Design Guide
“Schematic + PCB”.
Plasser symboler:
ESP32 38-pin header-breakout (i Flux-biblioteket: “ESP32 DevKitC” eller generisk 2×19 header). I verste fall lager du to 1×19 headers (2.54 mm) og merker pinnene.
I²C OLED header: 1×4 pin-header (VCC, GND, SCL, SDA).
LED-seksjon: 3× LED (THT 3 mm) + 3× motstander (THT ¼ W).
Valgfrie I²C pull-ups: 2× 4.7 k (SDA→3V3 og SCL→3V3), DNP i BOM.
179 days
2:29
Accessing knowledge base.
Jeg plasserer symboler og footprints for ESP32‑header, I²C OLED‑header, 3× LED med seriemotstander, samt valgfrie I²C pull‑ups.
- ESP32: legg til ESP32 DevKitC eller 2x19 Header; ev. to 1x19 Header og merk pinnene.
- I²C OLED: Pin Header 1x4 (VCC, GND, SCL, SDA).
- LED‑seksjon: 3× LED 3mm THT + 3× Resistor THT 1/4W i serie.
- Pull‑ups: 2× 4.7k Resistor THT, merkes DNP.
Klikk Start på planlinjen for å kjøre planen.
Plan
Goal
- Place symbols and footprints for an ESP32 header, a 1×4 I2C OLED header, an LED section with 3× 3 mm THT LEDs and associated 1/4 W resistors, and optional 2× 4.7 kΩ I2C pull-ups (with DNP property) on the schematic and PCB.
-
ESP32 Header
- Select and add an ESP32 DevKitC header (or, as an alternative, two 1×19 headers representing a 2×19 header) with a 2.54 mm THT footprint.
- Label the header pins appropriately for ESP32 connections.
-
I2C OLED Header
- Add a 1×4 header symbol to serve as the I2C interface for the OLED module.
- Label the header pins as VCC, GND, SCL, and SDA.
- Assign a 2.54 mm THT footprint to the header.
-
LED Section
- Place three 3 mm THT LED symbols.
- Add three corresponding 1/4 W resistor symbols with 2.54 mm THT footprints in series with each LED.
-
Optional I2C Pull-Ups
- Add two 4.7 kΩ resistor symbols with a 2.54 mm THT footprint intended for pull-up connections, one tied to SDA and the other to SCL.
- Set the DNP (Do Not Populate) property on these resistors.
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Placement on Schematic and PCB
- Arrange all added components on the schematic canvas ensuring clear identification and separation of functional blocks.
- Position component footprints on the PCB canvas in accessible and logically grouped areas, without routing nets at this stage.
- The ESP32 header is placed with correct pin labeling and footprint assignment.
- The I2C OLED header is correctly placed and labeled with VCC, GND, SCL, and SDA pins.
- The LED section includes three 3 mm THT LEDs each with an associated 1/4 W THT resistor, all having proper footprints.
- The two optional I2C pull-up resistors are added with 2.54 mm THT footprints and are marked with the DNP property in the BOM.
- All components are positioned appropriately on both the schematic and PCB canvases.
Add ESP32 header
Use two 1×19 headers
Add OLED header
Add LEDs
Mark pull-ups DNP
179 days
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