makerPower Solar: Smart solar power generation system for the Internet of Things

makerPower Solar is a smart solar battery charger and 5 V power supply combination. It allows technology professionals and enthusiasts to take their embedded systems and IoT devices off the grid and run them anywhere. It can operate as a simple stand-alone power supply or as a peripheral capable of comprehensive reporting of power conditions. True Maximum Power Point (MPPT) algorithms extract every joule of energy from all solar conditions.

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Wireless Home Automation (Control and Monitoring) using Nextion HMI Display_MainBoard

2 Layers PCB 56.6 x 83.1 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;

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High efficiency digital power solution source code

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Intelligent farmland supervision system based on ucosIII and STemwin

Intelligent farmland supervision system USART1 sends text messages USART3 uploads data UART4 receives Zigbee data

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New type of fault device for electric competition source code

This project uses the 430 series MSP430F5310 microcontroller as the central processing unit to develop a new type of fault indicator to indicate phase-to-phase short circuit faults and single-phase ground faults that occur on transmission and distribution lines of 10KV and below. Its main working process is: sensing real-time voltage and current values ​​from the high-voltage line, and sending them to the microcontroller for analysis and calculation after hardware processing. If the fault conditions are met, a flop signal is sent to cause the indicator to flop, and the action information is transmitted wirelessly. The communication module transmits the information to nearby communication substations.

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[Open Source] Using ESP32C3 to make a mini quadruped robot

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Wireless digital full-duplex intercom solution (circuit + source code)

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Car battery pack runtime

Despite the growing demand for larger battery cells, battery prices remain quite high, constituting the most expensive component in an EV or PHEV, with a typical price tag of around $10,000 for a battery that supports a range of a few hundred kilometers. The high cost can be mitigated by using lower-cost/refurbished battery cells, but such cells will also have greater capacity mismatches, which will reduce the available runtime or driving distance on a single charge. Even higher-cost, higher-quality battery cells will age and mismatch after repeated use. There are two ways to increase the capacity of a battery pack with mismatched cells: one is to use larger batteries from the beginning, which is not cost-effective; the other is to use active balancing, a new technology that can restore battery capacity in the battery pack and quickly increase power. Full series battery cells need balancing When each battery cell in the battery pack has the same state of charge (SoC), we say that the battery pack is balanced. SoC refers to the current remaining capacity of an individual battery relative to its maximum capacity as the battery is charged and discharged. For example, a 10Ah battery will automatically equalize the state of charge between parallel-connected battery cells over time as long as there is a conductive path between the battery cell terminals. It can also be argued that the state of charge of series-connected cells will vary over time for a variety of reasons. Temperature gradients across the pack, impedance, self-discharge rates, or differences in load between individual cells can cause gradual changes in SoC. While pack charge and discharge currents help to minimize these cell-to-cell differences, the cumulative mismatch will only increase unless the cells are periodically balanced. Compensating for gradual changes in cell SoC is the most fundamental reason to balance series-connected cells. Typically, passive or dissipative balancing schemes are sufficient to rebalance the SoC of cells with similar capacities in the pack.

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DRV8662EVM: 50-200V Piezo Haptic Driver

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2019 Electronic Competition Question A-Wireless Charging Car Design Plan and Report (National First, Nanjing University of Posts and Telecommunications)

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DSCope portable open source oscilloscope circuit design project source file based on FPGA design

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How to set different output voltages from 10 V to 18 V and how to increase efficiency to 86%

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WilkoL Bat Detector

2 Layers PCB 22 x 89 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen;Hackaday project

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Micro-current detection design information (including AD schematics and PCB files)

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[Open Source] Design of a Bluetooth-controlled car system based on STM32

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Sunmachine-A2 - Intelligent Lighting System

Driver for WS2812, SK6812 or similar LED strips controlled via Bluetooth LE. It supports RGB and WWA LEDs. The drive uses motion and light sensors so in automatic mode it can turn on the lights when it detects the presence of someone in the dark.

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[Open Source Materials for Competition] Electromagnetic Gun Circuit Diagram Design Materials

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FPGA minimum system board EP4CE6E22C8 (can be directly opened) reference design

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85VAC-264VAC Input, 18V/130mA Output Universal AC-DC Non-Isolated Buck Converter Reference Design Based on UCC28880

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100 QFP to DIP

2-layer PCB 28 x 132 mm FR-4, 1.6 mm, 1, tinned with leads, green solder mask, white silkscreen;

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