This circuit is a charger for single-cell lithium (Li-Ion) and Polymer (LiPo) batteries. It can sources energy from DC jack connectors (two different dimensions), USB-C and solar panel. It uses MCP73871 which has the peculiarity to smartly adjust the current sank, making it ideal for solar-powered applications, where the available energy could be really scarce and high-varying over time.
Solar powered switch-mode charger (CN3801), protector (HY2112) and 5V booster (MT3608) for LiFePO4 batteries.
The charger provides maximum power point tracking (MPPT) and can easily be modified to work with LiPo batteries.
* this project based on a ESP8266 ESP-07S WiFi Modul
* it supports 4 water circles (i use [Rainbird (DV-SERIES)](https://www.rainbird.eu/products/valves/dv-series) Valve)
* to save water on rainy days, it supports a [Rain Sensor from Rainbird](https://www.rainbird.eu/products/accessories/rsd-bex)
* 4V-16V DC are necessary for the power supply. 12V are optimal.
* for a suitable control, look under...
<p>An ESP8266-based gadget with 2xAA NiMH batteries charged by a solar panel, and sockets for I2C and UART ports, intended to be used with the AM2320 temperature / humidity sensor, an I2C OLED display, HC-05 Bluetooth module and a HC-12 433 MHz low bandwidth module. Contains 4x WS2812 RGB LEDs, and a single button.</p>
<p>In its basic form, it's a solar-powered ESP8266 gadget with WS...
Solar system power for esp8266 device like weather sensor. You need 5V 0.15W solar panel and small li-po battery for example 200mAh. Zener diode stabilizes voltage on 4.3, schottky diode give 0.15-0.2V voltage drop because 4.3V is too much for li-ion battery and prevents lekage current from battery. You can use panel also like binary(0/1) light sensor.
Keep It Simple Stupid
Not tested yet.
This is a Business Card for the compay I work for. It's called Suncontract: it is basically market place for electrical energy with P2P transfers - you can be a producer or consumer of the electricity and make an agreement with other user to buy/sell electricity (kWh) at your agreed price per kWh. There are not any other fees, just your agreed price and that's all. All transfers are i...
Original source from : [https://easyeda.com/berger.xavier/solarsaver](https://easyeda.com/berger.xavier/solarsaver)
**Open Solar Energy Diverter**
This project have the aim to divert not comsumed electricity produced by photovoltaic panel to water heater to keep energy produced in the area of usage.
This project is base on idea from [http://energie-autrement.blogspot.com/p/plans-eolienne.html]...