The ATtiny45/85 USB Phone Charge Guard regulates charging by monitoring voltage, current, power, and energy, protecting Li-ion batteries.

Project Overview: This project is an enhanced LED blinking circuit that goes beyond a simple 555 timer-based design. It incorporates additional features such as random blinking patterns, speed control, and a start/stop function. The project utilizes a microcontroller, such as an Arduino or Raspberry Pi, to control the blinking patterns, speed, and start/stop functionality. LED Blinking: The board features a total of 8 LEDs that blink in various random patterns. When the board is powered on, even before user interaction, the LEDs start blinking randomly, creating an eye-catching display. Each LED has its own current-limiting resistor to ensure proper current flow and prevent damage. The microcontroller is programmed to generate random blinking patterns for the LEDs, ensuring that the LEDs do not blink in a predictable or sequential order. This random blinking adds an element of unpredictability and visual interest to the project. Speed Control: The board includes two speed control buttons that allow the user to adjust the blinking speed of the LEDs. Button 1 is designated as the "fast" button, increasing the blinking speed when pressed, while Button 2 is designated as the "slow" button, decreasing the blinking speed when pressed. The speed control provides a range of blinking speeds, from a slow, gradual blink to a rapid, strobe-like effect. The microcontroller monitors the state of the speed control buttons and adjusts the blinking speed accordingly. Start/Stop Functionality: A third button serves as a start/stop control. When pressed, it toggles the blinking of the LEDs on or off. This allows the user to freeze the blinking pattern at any desired moment or resume the blinking when desired. The microcontroller handles the start/stop functionality by turning the LEDs on or off based on the state of the start/stop button. Manual Speed Adjustment: In addition to the speed control buttons, the board includes a potentiometer or variable resistor. This component allows the user to manually adjust the blinking speed of the LEDs by turning the knob or sliding the control. The manual speed adjustment provides more precise and customizable control over the blinking speed compared to the preset speeds of the buttons. The microcontroller reads the analog value from the potentiometer and adjusts the blinking speed accordingly. Power and Connectivity: The board is powered through a USB-C or USB-micro B connector, allowing it to be easily connected to a power source such as a computer or wall adapter. A voltage regulator may be included to ensure a stable and appropriate voltage supply to the components. A power switch is incorporated to conveniently turn the board on or off.

OctoPower is a monitoring hardware, it provides an end-to-end electricity monitoring solution perfect for monitoring home consumption, solar generation or any AC electrical circuit for that matter. Key features : - 8x clip-on CT current sensor - Full Real/Active power measurement & continuous sampling. - Cumulative energy persisted on reboot. - Wifi (with WPS) and Ethernet support - It send all data on mqtt topic - It can be configurable mqtt topics, calibration, enable/disable wifi over a mqtt api - Upgrade firmware over local network

TinyCharger is an ATtiny25/45/85-based, single-cell Li-ion battery charger with selectable charging current limit (100mA - 1000mA) and an OLED display for monitoring.

a solar battery BMS for a DIY battery bank consiting of 20 12V, 200Ah LiFEPO4 batteries in a 4S5P configuration. The BMS should integrate with a Victron SmartShunt monitor for voltage and current readings as well as DIY bank voltage monitors that measure and publish to an MQTT server. The Victron data is also available on the MQTT server. The BMS should add an RS485 port for communicating with Fortress Power Inverters to communicate battery health, charge state, voltage, and other required metrics.

System Architecture Overview with PWM Interface, Power Stage, Protections, EMI Filters, Connectors, Hall-Effect Current Monitoring, 4-pin JST-XH Control Header, Isolation & Default-OFF PWM Behavior, Compact Mechanical Layout #hall-sensing #isolated-control #compact-layout

Simple plug-and-play breadboard power supply with current monitoring output, LED indicators, switches for both rails, and decoupling capacitors.

The ATtiny45/85 USB Phone Charge Guard regulates charging by monitoring voltage, current, power, and energy, protecting Li-ion batteries.

Here’s a detailed project description prompt that you can use to generate the circuit: --- ### Project Description for Circuit Generation **Project Title**: Vehicle-to-Vehicle (V2V) Communication System for Preventing Dangerous Overtaking Maneuvers **Objective**: The prime objective of this project is to develop and implement a Vehicle-to-Vehicle (V2V) communication system that enhances road safety by preventing dangerous overtaking maneuvers. This system will provide real-time alerts to drivers about the presence and intentions of nearby vehicles, reducing the risk of collisions and improving overall traffic flow on highways. **Components**: 1. **Microcontroller (e.g., Arduino)** 2. **GPS Module (NEO-6M)** 3. **LoRa Module (SX1272)** 4. **Audio/Visual Alert Systems (e.g., Buzzer, LEDs)** 5. **SD Card Module** 6. **LM7805 Voltage Regulator** 7. **9V Battery** **Connections**: 1. **Power Supply**: - **9V Battery**: - Positive to **LM7805 Voltage Regulator Input** - Negative to **Common Ground** - **LM7805 Voltage Regulator**: - Output to **5V Rail (VCC)** - Ground to **Common Ground** 2. **Microcontroller (e.g., Arduino)**: - **Power**: - VCC to **5V Rail (VCC)** - GND to **Common Ground** 3. **GPS Module (NEO-6M)**: - **Power**: - VCC to **5V Rail (VCC)** - GND to **Common Ground** - **Communication**: - TX to **RX (Digital Pin) of Microcontroller** - RX to **TX (Digital Pin) of Microcontroller** (if needed) 4. **LoRa Module (SX1272)**: - **Power**: - VCC to **3.3V or 5V (based on module specification)** - GND to **Common Ground** - **SPI Communication**: - MOSI to **MOSI (Digital Pin) of Microcontroller** - MISO to **MISO (Digital Pin) of Microcontroller** - SCK to **SCK (Digital Pin) of Microcontroller** - NSS to **CS (Digital Pin) of Microcontroller** 5. **Audio/Visual Alert System (Buzzer, LEDs)**: - **Buzzer**: - Positive to **Digital Output Pin** of Microcontroller through a resistor - Negative to **Common Ground** - **LEDs**: - Anode (Positive) to **Digital Output Pin** of Microcontroller through a resistor - Cathode (Negative) to **Common Ground** 6. **SD Card Module**: - **Power**: - VCC to **3.3V or 5V (based on module specification)** - GND to **Common Ground** - **SPI Communication**: - MOSI to **MOSI (Digital Pin) of Microcontroller** - MISO to **MISO (Digital Pin) of Microcontroller** - SCK to **SCK (Digital Pin) of Microcontroller** - CS to **Digital Pin of Microcontroller** **System Functionality**: - **System Initialization and Configuration**: Ensure the microcontroller and communication modules are correctly initialized and configured for optimal performance. - **GPS Signal Acquisition and Data Parsing**: Accurately acquire and parse GPS data to determine the vehicle's current location and speed. - **Vehicle Position and Speed Calculation**: Calculate precise vehicle position and speed in real-time to provide accurate data for communication. - **V2V Communication Establishment**: Establish a reliable communication link between vehicles using the LoRa module to transmit and receive data. - **Overtaking Intention Detection and Signal Transmission**: Detect overtaking intentions and transmit this information to nearby vehicles to alert them of potential hazards. - **Signal Reception and Processing by Nearby Vehicles**: Ensure nearby vehicles can receive and process overtaking signals to determine the position and speed of the overtaking vehicle. - **Driver Alert Generation**: Generate audio and visual alerts to inform drivers of the presence and intentions of nearby vehicles, especially during overtaking. - **Continuous Monitoring and Data Logging**: Continuously monitor the system's performance and log relevant data for analysis and future improvements.

The PAM8610, manufactured by Power Analog Microelectronics, is a high-performance, 10W (per channel) stereo class-D audio amplifier featuring DC volume control. This component is designed to deliver low THD+N (0.1%), low EMI, and high efficiency (>90%), making it ideal for high-quality sound reproduction in a variety of applications such as flat monitor/LCD TVs, multi-media speaker systems, DVD players, game machines, boomboxes, and musical instruments. Operating off a 7V to 15V supply, the PAM8610 distinguishes itself with its 32-step DC volume control ranging from -75dB to 32dB, shutdown/mute/fade functions, and comprehensive protection against overcurrent, thermal, and short-circuit conditions. Its low quiescent current, pop noise suppression, and minimal external component requirement further enhance its appeal for compact and efficient audio solutions. The PAM8610 is available in a compact 40-pin QFN 6mm*6mm package, ensuring a small footprint for space-constrained applications. Compliance with RoHS standards underscores its environmental consideration. With its advanced features and high integration level, the PAM8610 offers a compelling option for designers seeking to incorporate robust audio amplification with fine-grained volume control in their electronic projects.

A Bluetooth Power Logger utilizing Seeed Studio's XIAO nRF52840 uC Power Monitoring handled using the INA260 IC, this design should be safe for usage under 36V 8A. Higher current rating will require larger trace widths on the main power trace. Attach your Power Supply to V+ and GND. Then attach your loading device to LOAD+ and GND.

The PAM8610, manufactured by Power Analog Microelectronics, is a high-performance, 10W (per channel) stereo class-D audio amplifier featuring DC volume control. This component is designed to deliver low THD+N (0.1%), low EMI, and high efficiency (>90%), making it ideal for high-quality sound reproduction in a variety of applications such as flat monitor/LCD TVs, multi-media speaker systems, DVD players, game machines, boomboxes, and musical instruments. Operating off a 7V to 15V supply, the PAM8610 distinguishes itself with its 32-step DC volume control ranging from -75dB to 32dB, shutdown/mute/fade functions, and comprehensive protection against overcurrent, thermal, and short-circuit conditions. Its low quiescent current, pop noise suppression, and minimal external component requirement further enhance its appeal for compact and efficient audio solutions. The PAM8610 is available in a compact 40-pin QFN 6mm*6mm package, ensuring a small footprint for space-constrained applications. Compliance with RoHS standards underscores its environmental consideration. With its advanced features and high integration level, the PAM8610 offers a compelling option for designers seeking to incorporate robust audio amplification with fine-grained volume control in their electronic projects.

The HY2213 series, developed and manufactured by HYCON Technology Corp., presents a high-precision, energy-efficient battery charge balance integrated circuit (IC) specifically designed for single-cell lithium-ion or lithium-polymer batteries. This component encompasses a wide range of features tailored for multi-cell Li-ion rechargeable battery packs applications, including a high-precision voltage detection circuit capable of monitoring overcharge situations with a detection voltage range between 4.000V and 4.500V. Its unique design allows for delay times generated internally, eliminating the need for external capacitors and reducing the overall component count. Operating with a remarkably low consumption current in both operation (Typ. value 2.5uA, Max. value 3.5uA at VDD=3.9V) and standby modes (Max. value 0.5uA at VDD=2.7V), the HY2213 series is designed for energy-sensitive applications. It also offers versatility in operation temperature, ranging from -40℃ to +85℃, and comes in a compact SOT-23-6 package, making it suitable for space-constrained applications. The HY2213 series underscores HYCON Technology Corp.'s commitment to advancing battery management solutions by integrating overcharge detection and release, standby detection, and charge balance functionality into a single, efficient, and easy-to-use IC.

Remote Power Supply with built in monitoring and local sound based alarms. -4A CC output -2.5W Speaker Output