Hardware for my Project

Projects General Guidance
1

Hi,

i want to do a project with arduino, but i am not sure what hardware i need or if it's even possible to do it with Arduino Hardware.

I need:

  • Audio output for an 8-Ohm speaker (to play a sound)
  • acceleration sensor (to measure the movement of a walking stick)
  • WLAN (to send the measured values from the acceleration sensor to a PC)

Is this possible and/or what hardware would you suggest?

2

It is more complex than you realize.

If the sound you want is just a buzz, then the Arduino can drive a buzzer directly. If you eant music or recorded sounds played then the complexity jumps.

Acceleration sensors may not capture the complete movement. What part of the motion do you need to measure.

If WiFi is necessary then it can get bulky on a standard Arduino. An ESP8266 might be better.

Power consumption is an issue. How big of a battery can you fit and how long is it supposed to run?

3

A speaker has the advantage that i can control the volume. It is not required to play an audio file, just a single tone in a specified interval.

For the motion i dont need the complete motion. I only want to detect if the stick is in motion(walking) or not (lie on the ground). And i want to look if i can detect when the stick is put on the ground during the walk. This should show as an high peak!?

Size is not an issue.

Power consumption is not important. Its only a "prototype", i can even mount a powerbank for this purpose.

4

You might tell if the stick is upright with one or more mercury switches.
You might tell if the stick strikes something with a piezo disk.

With an accelerometer (at the top of the stick to cut down swing accel, get mostly gravity) you could get the angle of the stick.