LiPo battery charger, protector and 5V booster based on the IP5306 featuring:
- synchronous switch-mode charging with up to 2.1A / 91% efficiency,
- discharging with up to 2.4A,
- 5V boost converter with up to 92% efficiency,
- integrated power-path management (charging battery and 5V output at the same time),
- voltage based fuel gauge indication with 4 LEDs,
- on/off key,
- smart load detector (...
Card based to ESP32 Wroom 32D
Micro USB Interface Power & Serial
2.2 Inch ( 240x230 ) Color LCD Screen
Micro SD Card Reader ( SPI )
3.7v LiPo Battery Port
Real Time Clock ( I2C )
Selection button x 4 ( I2C over I2C GPIO Extender)
External Reset Port ( SWITCH )
External Analogic Input X 2
External Optocoupled Digital Input X 4
External Optocoupled Digital Output X 4
External I2c Port...
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.
Li-Ion battery charger, protector and 5V/2A booster. Use unprotected Li-Ion batteries which are rated for a discharge current of at least 5A !
Compact speedometer with OLED display and temperature measurement.
It features an ATtiny85 uC with USB programming and battery charging and protection circuitry. I will be using it to measure the speed of my bicycle and determine the temperature around me on my rides.
The project consists of 2 pcbs: the sensor that will be mounted on the wheel of my bike and the actual speedometer.
# 1. Overview #
Li-Ion battery charger, protector and 5V/3A booster. Use unprotected Li-Ion batteries with low internal resistance which are rated for a discharge current of at least 7A! Connect the battery with short wires of 20AWG or thicker! Attach a heatsink on the back side of the PCB when drawing more than 2A of current continuously! Use a slide switch that can withstand a current of 6A!
This is a work in progress, and I am only a hobbyist!
This is a 3.3V max. 1A power supply for microcontroller circuits, based on a [Texas Instruments Webench Power Designer](https://webench.ti.com/power-designer/) [design report](https://easyeda.com/attachments/2020/2/VcRQzQEVQVHQ84x7PkTshqI471yGhASCPhwpucvl.pdf) using a [TPS82084SIL](https://www.ti.com/product/TPS82084) step-down converter with...
This schematic has a few functions to this circuit. This circuit takes voltages starting from 4V to a max. of 13V. It was an open source project I found online. I've redone this board's schematic. But when it came to de PCB design I kinda lost it. I got as close to sorting the components on the board, but I didn't know where to start connecting wires or how. I'm taking a little break, but if anyon...