A simple voltage divider to showcase how to make parts. A voltage divider is a simple circuit which turns a large voltage into a smaller one. Using just two series resistors and an input voltage, we can create an output voltage that is a fraction of the input. Voltage dividers are one of the most fundamental circuits in electronics.

A Fridge door Alarm is a simple PCB project designed to detect & inform the status of any refrigeration unit’s door: whether its open or not. It produces a monotonous beeping noise if the fridge door is left open for too long by an accident. It’s common use is in refrigerators, Temperature Controlled Freezers & beverage coolers.

A simple voltage divider to showcase how to make parts. A voltage divider is a simple circuit which turns a large voltage into a smaller one. Using just two series resistors and an input voltage, we can create an output voltage that is a fraction of the input. Voltage dividers are one of the most fundamental circuits in electronics.

A simple voltage divider to showcase how to make parts. A voltage divider is a simple circuit which turns a large voltage into a smaller one. Using just two series resistors and an input voltage, we can create an output voltage that is a fraction of the input. Voltage dividers are one of the most fundamental circuits in electronics.

A simple voltage divider to showcase how to make parts. A voltage divider is a simple circuit which turns a large voltage into a smaller one. Using just two series resistors and an input voltage, we can create an output voltage that is a fraction of the input. Voltage dividers are one of the most fundamental circuits in electronics.

A simple voltage divider to showcase how to make parts. A voltage divider is a simple circuit which turns a large voltage into a smaller one. Using just two series resistors and an input voltage, we can create an output voltage that is a fraction of the input. Voltage dividers are one of the most fundamental circuits in electronics.

A simple voltage divider to showcase how to make parts. A voltage divider is a simple circuit which turns a large voltage into a smaller one. Using just two series resistors and an input voltage, we can create an output voltage that is a fraction of the input. Voltage dividers are one of the most fundamental circuits in electronics.

A simple voltage divider to showcase how to make parts. A voltage divider is a simple circuit which turns a large voltage into a smaller one. Using just two series resistors and an input voltage, we can create an output voltage that is a fraction of the input. Voltage dividers are one of the most fundamental circuits in electronics.

a simple PCB that blinks an LED on and off.

A rechargeable wrist-worn push-to-talk interface for a cloud-hosted AI assistant, with Wi-Fi, microphone, speaker, simple status feedback, and optional direct Bluetooth-earbud audio.

Simple ESP32 remote-control car board with front steering servo, rear DC motor drive, Wi‑Fi control, battery input, and beginner-friendly bring-up connections.

Simple battery-powered resistor-capacitor test circuit with three connected components placed on a compact 20 mm × 20 mm PCB.

Use this template if you plan to get your 1-4 layer boards manufactured with HQ NextPCB (nextpcb.com). This template is designed for generic designs to minimize unnecessary costs and complications where possible. https://www.nextpcb.com/pcb-capabilities #project-template #template #manufacturer-design-rules Here’s a simple bogus Mermaid diagram you can paste and render: ```mermaid flowchart TD A["Start"] B["Open Box"] C["Find Blue Banana"] D["Ask Why"] E["Do Nothing"] F["Finish"] A --> B B -->|box is empty| E B -->|box has stuff| C C --> D D -->|shrug| E E --> F ```

Simple simulatable 2-bit synchronous JK up counter for verifying the 00→01→10→11 sequence.

Simple CR2032-powered binary wristwatch with a low-power MCU, readable LED bit display, pushbutton wake/time setting, and PCB shape suitable for a 3D-printed case.

A simple 2xAA battery holder to 5mm Screw Terminal adapter PCB. Ideal for testing purposes.

A simple 2xAAA battery holder to 5mm Screw Terminal adapter PCB. Ideal for testing purposes.

Smart weighing + vision recognition controller using a Seeed XIAO ESP32-S3, Grove Vision AI V2 connected only by 3V3/GND/SDA/SCL, and a simple four-pin ESP32-S3 expansion interface for D2/GPIO3 and D3/GPIO4; no onboard HX711 or load-cell connector.

Simple 5V 555 timer astable LED flasher with red indicator LED, 5V terminal input, timing passives, and local bypass capacitors.

Simple hand-solderable 9V battery LED blinker using a NE555 astable oscillator, on/off switch, battery snap connector, supply decoupling, and a red status LED blinking at approximately 1 Hz.

Simple 9V battery-powered NE555 astable LED blinker with on/off switch, red indicator LED, and hand-solder-friendly through-hole components.

WT32-ETH01 carrier refactored for a single 2x10 WT32 header, 12V input terminal, 6-pin Wiegand terminal, and a 12V-to-5V buck stage with level-shifted D0/D1 plus transistor-driven LED and BUZZER outputs, prepared for a simple 2-layer layout.

Competition PCB for a to and fro memory robot using through-hole components only. Target layout is maximum 120 mm x 70 mm, 2-layer maximum with top-layer routing only, 0.5 mm trace width minimum design intent, 0.3 mm clearance minimum, restricted solder mask outside the board center, and manufacturing freeze before 15 April 2026. Planned architecture uses a simple 5 V control and drive system with sensor inputs, memory/control logic, motor-driver stage, user controls, and edge-access debug/test points.

WT32-ETH01 carrier refactored for a single 2x10 WT32 header, 12V input terminal, 6-pin Wiegand terminal, and a 12V-to-5V buck stage with level-shifted D0/D1 plus transistor-driven LED and BUZZER outputs, prepared for a simple 2-layer layout.

Simple bus-powered USB audio interface for MacBook Air and Ableton Live using a USB audio codec, stereo analog input and output path, monitoring buffer stages, USB-C power and data connectivity, and low-noise PCB guidance.