Protect lithium polymer battery pack from over discharge.
12v Solar Generator using a Victron BlueSolar MPPT 75/15 Solar Charge Regulator & Arduino-based GUI for Info Display.
DIY one-wheel, self-balancing, electric, open-source hoverboard/skateboard. Uses an Arduino, accelerometer, and brushless hub motor.
A Battery level indicator (Battery Guage) is an electronic measuring instrument that indicates the immediate voltage level of any DC battery
Provides portable power and network (4G, 5G, LAN, VPN) for non-portable instruments.
SAMD21G - xyz-mIoT [w. GSM, NB IoT or LTE CATM1] ~35-37uA in SLEEP mode - run your device for years using LiPO, LiION or Lithium batteries.
Build a WiFi 2xAAA battery powered moisture/water sensor in minutes and monitor on a smartphone. All this with ZERO code and programming.
Long-range wireless sensor based on Whisper Node capable of running for over a year on a single CR2032, transmitting data every 60 seconds.
A realtime battery indicator for your project without extra components or using any analog I/Os.
What if we built a small weather station lasting for about 6 months with 2x AA, talking to Internet and working anywhere with SIGFOX?
An Arduino powered birthday reminder device that will wish you on your birthday for 50 years on a single CR2450 coin cell.
See how much battery you have left!
Don’t let phone batteries fizzle out, put power back in your hands!
Power management for portable Arduino projects.
Twice the power, Twice the capacity to power your Pi.
This battery charger monitor uses an OLED display & Blynk to show you its charge current, bus voltage, load voltage & elapsed time.
A water bottle that can keep track of your water intake and reminds you to drink enough water.
A long-lasting inexpensive battery bank that never needs to be plugged in.
Yes, yet another weather station. But this one is special! It connects to your WiFi and it can run for more than a year on 2 AA batteries!
A simple and inexpensive solution is to use a 'mobile power bank'
This project is all about making a power inverter using arduino. The Inverter produces 220VAC from 12V battery.
This solar powering unit is a time-switching, battery-powered, solar-charged circuit for Arduino.
Long-Range, Battery-Driven Sensors that Collect Temperature, Humidity, Air Pressure
Charge up with 5 volts then use it to power up 9v gadgets with the build-in circuit. Same capacity, same voltage, better technology...