Well, for a while now I've been entertaining the idea of building a remote sensor node to keep track/record of my indoors "balcony orchard".
This project here will be my starting point, a Low-Power Wireless Sensor Node where most of the work is already cut out for me.
It's power consumptions are reported to be:
Sleep Consumption 0.14 mA
As I was thinking of new features for my robot, I realised how painfully short I was on pins! The Arduino Mini just doesn't have enough! I'm not thinking of upgrading to a Mega, seeing how pricey it is and also because it's pretty huge. That's when I though of I/O expanders. Unfortunately, most are designed to be shields for anything but the Arduino Mini, so, again, I didn't know what to do. That's when I thought of using a Picaxe for expanding! I'm thinking of using a PWM or an analog pin from the Arduino as an output to a Picaxe input pin.
Hello
I am planning on building a lasar tag set with my arduino. does anyone know what I could use to detect the lasar ( some sort of reciever or cell of some sort) I want to be able to use it when there is light so a photo cell is already out of the picture.
Hello i am thinking of building a bigger version of the dagu 6wd wild thumper. a big one that can tow and go over larger obstacles much like the smaller current one. The motors i have selected to use are winshield wiper motors and will be powered by either a custom build lithium polymer battery pack (putting a bunch of 3 cell 2200mah batteries in parallel) or a car battery. I would probably go for the lithium polymer as they have a greater energy density.
What inspired me
As more and more people get a Pi they are asking how to interface it to their robot. I do not own a Pi but I looked at the GPIO pins available for interfacing. Apart from general digital I/O pins you have I2C, SPI and Serial interfacing available. I assume there is a library or something that allows these pins to be easily access from within the Linux operating system.
So the question becomes do you just use another MCU such as an Arduino to provide the necessary I/O functionality or do you use a custom shield?
So, I was searching the market for what my wireless headphone options were and got quite disappointed.
As it seems, wireless used is either IR, RF (on the FM/UHF band) and Bluetooth (also 2.4Ghz seemingly working in the router's norm).
IR ... needs line of sight, small range...
RF... prone to interferences
Bluetooth... small range
2.4GHz... some reviews said they interfered with the home wireless routers