low power

A collection of 15 posts

BLE

BLE sensor with the nRF51822 chip

The journey of building a BLE sensor prototype, with a custom firmware based on the Nordic nRF51822 chip and the Ardunio framework.

ATtiny

Unbrick an ATtiny13a at 128khz

So easy to flash and brick an ATtiny13A. Let's see how to recover it as easily!

ATtiny Featured

Sleep device

This little device is a low-cost homemade option which will help you to sleep like a baby!

PIR

PIR sensors: HC-SR501

Some specifications and tests around the most popular PIR sensor on AliExpress (with low power consumption in mind).

Arduino

Pulse LED with ATtiny

The ATtiny opens new low costs project possibilities. Pulsing a LED for few seconds is an easy example.

Tardis

Power on a circuit when the lights are on

Power off a circuit when the lights are off can be a good way to decrease power consumption.

Tardis

LED pulse with NE555

The NE555 timer is quite cheap and using it is quite different than the usual micro-controllers. Pulsing a LED is a good way to begin with.

Water-Tank project

Water tank monitor [5]: Power consumption

After building the circuits and programming them, I have to check the power consumption of the sensors before installing them.

Project

Arduino Pro Mini: Power consumption

Building a low power consumption project is not easy for a hobbyist. The Arduino Pro Mini is a good option but requires some tweaking!

Arduino

Arduino pro mini @ 1MHz in Arduino IDE

After building a bootloader for Arduino Pro Mini working at 1Mhz, I found a way to easily use it in the Arduino IDE.

Arduino

Compile Optiboot for Arduino Pro Mini (1Mhz / 1.8V)

Using the Arduino pro mini at 1MHz is great, but requires an ISP programmer. I built a bootloader working at this frequency to simplify developments.

Arduino

Arduino pro mini @ 1MHz - 1.8V

I'm always trying to find the best option for low power consumption projects. Using the Arduino pro mini at 1MHz and 1.8V gives new perspectives!

Water-Tank project

Water tank monitor [4]: Source code

After building the circuits of the sensors and the base station, it's now time to program them with the Arduino core.

Water-Tank project

Water tank monitor [3]: Circuits

Time to build my first water taken sensor and the base station! I will use perfboards and plastic boxes for this first iteration.

Water-Tank project

Water tank monitor [2]: Components

After reviewing the main parts for my sensors, it's time to decide which electronic components I will use.