16 Projects tagged with "Li-ion"

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Solar powered gadget, using ESP8266 and a thermistor, broadcasting the water heater temperature to the web.

Hot Water? Solar Powered ESP8266 With a Thermistor

MSP430 IV-18 Tube Clock

Tube Clock

Stanislas Bertrand

ALLWINNER A20 - CARRIER BOARD

madivak madivak

1m 12w RGB LED WiFi Artnet Controlled Cubes

LUMOS

Charles Yarnold

Using the RDA5807 chip

Tinbox FM radio

Quick project to rebuild an 18V Li-Ion drill battery pack

18V Li-Ion drill battery pack rebuild

Test and Tear down of an inexpensive 12 Volt Power bank.

The Cheap eBay Battery Pack

Patrick Gentile

Adjustable low voltage cut off utilizing an ATTINY85

Low Voltage Cut Off

Patrick Gentile

A one-day build to replace expensive D cell alkaline batteries with an 18650 Li-ion rechargeable battery cell.

Baby Swing Battery Replacement

This boombox sounds pretty loud. 2x50 W speakers running on DIY 18650 Li-Ion battery pack salvaged from old laptop batteries. In a wine box.

100 W portable bluetooth speaker

How to build your own 18650 battery pack from scrapped laptop batteries, with built-in balance charger and protection circuit

18650 Li-ion 3s battery pack with balance charger

The 2018 Hackaday Prize

SolarUPS devices can provide for constant, uninterruptible low voltage system power supply for low consumption equipment

SolarUPS V3 Solar Uninterruptible Power Supply

This is a 0.8x0.6 inch board with AEM10941 solar harvesting IC charging a Lithium Ion battery

Solar harvesting into Li-ion battery

Simple solar charger 35V/8A with automatic MPPT supporting SLA/Li-Ion/LiFePO4 up to 8s

BrainDead MPPT Solar charger 35V/8A

Adam Lučanský

What you need to grade your scavenged cells for building balanced packs.

Minimalist Li-Ion Discharger/Capacity meter.

Hackaday Prize 2019

Feature-packed over-discharge protection. Set the cell-count (2S to 7S), minimum cell voltage and dip-time below threshold. Fully hackable!

Universal LiPo/Li-ion UVLO (undervoltage lockout)