A simulated blinking LED circuit using an astable multivibrator a.k.a "flip-flop" as a square wave generator. It also includes PCB layout of the project.

A simulated blinking LED circuit using an astable multivibrator a.k.a "flip-flop" as a square wave generator. It also includes PCB layout of the project.

Have you ever wanted to wake up to one of the most energizing scents? Have you ever wanted that cup of energy in your hands before you even slide out of your covers? Well want no further! Introducing the Coffee Waker; The knight of your nightstand, a coffee maker alarm clock with one soul purpose, to quickly and scrumptiously wake you up. This is the Coffee Waker Main board. It contains an ESP32-S3, 16 bit Load Cell ADC, 16 bit MP3 DAC, 120V heater cartridge relay, and 12C wakeup light convector.

This module is a minimalist Arduino Watch design. Consisting of a Microchip ATTINY85-20SU microcontroller, an OLED display for visual output, two user buttons for interface, and a Li-ion Battery for power. The schematic also includes graphic user interface with ISP for programming and minimal passive components for functionality. #wearableDevices #arduino #attiny85

This module is a minimalist Arduino Watch design. Consisting of a Microchip ATTINY85-20SU microcontroller, an OLED display for visual output, two user buttons for interface, and a Li-ion Battery for power. The schematic also includes graphic user interface with ISP for programming and minimal passive components for functionality. #project #Template #projectTemplate #reusable #module #simple-embedded #microchip #arduino #sublayout

This module is a minimalist Arduino Watch design. Consisting of a Microchip ATTINY85-20SU microcontroller, an OLED display for visual output, two user buttons for interface, and a Li-ion Battery for power. The schematic also includes graphic user interface with ISP for programming and minimal passive components for functionality. #project #Template #projectTemplate #reusable #module #simple-embedded #microchip #arduino #sublayout

Daddy's first PCB. Measures the water level of a potted plant, displays the level using LEDs.

The Coffee Waker is a unique, full-featured coffee maker alarm clock designed to brighten your morning routine with the irresistible aroma of freshly brewed coffee. By seamlessly integrating multiple high-performance components onto a single main board, the Coffee Waker delivers both functionality and innovation: - **Processing & Connectivity:** Powered by an ESP32-S3, it offers built-in WiFi and Bluetooth, enabling smart scheduling, remote control, and over-the-air updates. - **Precision Sensing:** A 16-bit load cell ADC provides accurate measurements, ensuring precise weight sensing for coffee bean dosing or liquid volume monitoring. - **Quality Audio Output:** The onboard 16-bit MP3 DAC guarantees clear audio playback, from alarm sounds to any custom wake-up messages you program. - **Robust Power Handling:** With a 120V heater cartridge relay and a 12V wakeup light converter integrated, the board safely manages high voltage switching and provides a visually soothing light routine. - **Thoughtful Integration:** Designed with automotive-grade components, precision regulators, and careful signal routing, the Coffee Waker Main Board combines performance with reliability while keeping a compact footprint. Overall, the Coffee Waker transcends the ordinary alarm clock, merging daily utility with modern connectivity and a touch of luxury—making it the perfect addition to any nightstand. #CoffeeWaker #SmartHome #CoffeeMaker #AlarmClock #MorningRoutine #Technology #Innovation

This module is a minimalist Arduino Watch design. Consisting of a Microchip ATTINY85-20SU microcontroller, an OLED display for visual output, two user buttons for interface, and a Li-ion Battery for power. The schematic also includes graphic user interface with ISP for programming and minimal passive components for functionality. #project #Template #projectTemplate #reusable #module #simple-embedded #microchip #arduino #sublayout

This is a smart watch project based on E73-2G4M04S1A module with SoC nRF52810 on board. OLED display and coin battery #wearable #nRF52810 #E73 #Ebyte #BLE #referenceDesign

Have you ever wanted to wake up to one of the most energizing scents? Have you ever wanted that cup of energy in your hands before you even slide out of your covers? Well want no further! Introducing the Coffee Waker; The knight of your nightstand, a coffee maker alarm clock with one soul purpose, to quickly and scrumptiously wake you up. This is the Coffee Waker Main board. It contains an ESP32-S3, 16 bit Load Cell ADC, 16 bit MP3 DAC, 120V heater cartridge relay, and 12C wakeup light convector.

This module is a minimalist Arduino Watch design. Consisting of a Microchip ATTINY85-20SU microcontroller, an OLED display for visual output, two user buttons for interface, and a Li-ion Battery for power. The schematic also includes graphic user interface with ISP for programming and minimal passive components for functionality. #project #Template #projectTemplate #reusable #module #simple-embedded #microchip #arduino #sublayout

USB-C powered ESP32 WiFi water flow meter interface for a 3/4 inch PVC ultrasonic RS485 flow sensor, including 12V sensor power, 3.3V logic power, protection, status LEDs, and programming/reset support.

Just led watch with 24 LEDs serving hour-hand powered by STM32 on board. #stm32 #led #iot #watch

This module is a minimalist Arduino Watch design. Consisting of a Microchip ATTINY85-20SU microcontroller, an OLED display for visual output, two user buttons for interface, and a Li-ion Battery for power. The schematic also includes graphic user interface with ISP for programming and minimal passive components for functionality. #project #Template #projectTemplate #reusable #module #simple-embedded #microchip #arduino #sublayout

Full Wave Rectifier using Diodes

This module is a minimalist Arduino Watch design. Consisting of a Microchip ATTINY85-20SU microcontroller, an OLED display for visual output, two user buttons for interface, and a Li-ion Battery for power. The schematic also includes graphic user interface with ISP for programming and minimal passive components for functionality. #project #Template #projectTemplate #reusable #module #simple-embedded #microchip #arduino #sublayout

WiFi-enabled ultrasonic water flow meter interface for 3/4 inch PVC pipe with USB-C power, ESP32 WiFi, 12V RS485 sensor supply, and protected sensor interface.

WiFi-enabled ultrasonic water flow meter interface for 3/4 inch PVC pipe with USB-C power, ESP32 WiFi, 12V RS485 sensor supply, and protected sensor interface.

Multi-subsystem ESP32-S3 coffee maker/alarm controller board for a Coffee Waker appliance. The design uses an ESP32-S3-WROOM-1-N8R8 module as the main Wi-Fi/Bluetooth MCU, with USB-C 2.0 device connectivity through a USB4105-GF-A connector, 5.1 kΩ CC pull-downs, and USBLC6-2SC6 ESD protection on the USB D+/D− pair. Power architecture includes a 12 V input on a JST VH B4P connector, a TPS62932 buck regulator generating the 5 V rail, a TLV1117LV33 3.3 V LDO for MCU/logic power, and TPS22919 load switches for controlled 3.3 V/5 V peripheral rails. Functional blocks include an NAU7802 load-cell ADC on I2C with two differential load-cell channels, a MAX98357A I2S audio amplifier/DAC with speaker/output filtering, a microSD socket on SDIO, I2C/test headers, UART/programming header, and auxiliary JST VH connectors for wake-light or external loads. The high-voltage section includes 120 VAC input/output screw terminals, a 5 V SPST-NO relay rated 15 A / 240 VAC max, a 1 A fuse, MOV surge suppression, diode snubber, and a dedicated heater output terminal.

ESP32-based water level early warning system using a waterproof ultrasonic level sensor, USB-C power/programming, WiFi alert capability, local buzzer, and status LED indicators.

Premium dual-PCB ESP32 smart water level controller with isolated high-voltage power/motor board, low-voltage IoT logic board, level sensing, dry-run/voltage/current protection, TFT UI, MQTT connectivity, RTC logging, and industrial surge protection.

Analog water-level controller using an LM31 liquid level sensor input and PEL00884 brushed DC motor drive. The circuit buffers and scales the ratiometric sensor signal, derives motor current demand versus water level, shuts the motor off at 100%, and lights a green full-tank LED.

USB-C powered ESP32 WiFi water flow meter with 12V RS485 ultrasonic sensor interface for 3/4 inch PVC pipe Vibe-hardwared

USB-C powered ESP32 WiFi water flow meter schematic with protected 5V input, 3.3V LDO, 12V boost supply for an external RS485 ultrasonic sensor, UART programming header, boot/reset network, and three status LEDs for power, WiFi, and flow activity.