Let's Make Robots!

Robot Voice Text To Speech

Hi, 

Can anyone point me in the direction of a good (free or very cheap) text to voice or voice changing software or app (android, ios or Mac) or even Windows. 

I need to make lots of recordings for a robotics project so I need a deep husky sound like the ABC Robot from Judge Dredd, or even the Guard Towers from Aspen Prison of the same film. 

The recordings will be played back to an ios Morfo app of a robot head to help give an animated face to my robot. 

 

Thanks 

Issue with IR Reciever Module Talking to Spider Controller

Probably a question for OddBot specifically, but maybe someone else could benefit someday from the answer.

This is part of my slow-rolling work on my Service Droid, VADER. 

Arduino Nano or Other board

Hi guys

New here, but i've been hanging around a while.

I've finally started working of my first robot, and I'm not sure if i should use my arduino nano or something else

 

I want my robot to be expandabe, and so far it has an LCD, 2 stepper motors (wheels) and a servo claw.

Because I want it to exspand as my knowlage grows, I think i'm going to want more IO pins than I've got... So I'm wondering wether to use my arduino, and I2C to a second chip, or to find myself a board with more IO's.

 

Any help/advice would be apreciated.

Arduino Nano or Other board

Hi guys

New here, but i've been hanging around a while.

I've finally started working of my first robot, and I'm not sure if i should use my arduino nano or something else

 

I want my robot to be expandabe, and so far it has an LCD, 2 stepper motors (wheels) and a servo claw.

Because I want it to exspand as my knowlage grows, I think i'm going to want more IO pins than I've got... So I'm wondering wether to use my arduino, and I2C to a second chip, or to find myself a board with more IO's.

 

Any help/advice would be apreciated.

Websocket implemenation @ Arduino or @ NodeJS + Firmata

There seems to be something wrong with my latest comments => repost them to be certain.

I need help in dead reckoning calculation

Hi all,

I need help to determine dead reckoning parameters ((x,y) coordinates and orientation) for my mobile robot, actually I found the code (written for Arduino)shown in the attachment and I don't know if it is good for this task , but in the code I faced some commands which are not clear to me :

I'm unclear as to which GNDs are supposed to be connected (picture of setup and robot included)

Hi All,

 

I'm trying to wire up a balancing robot but I'm not sure what to do with all of the grounds.

Understanding how not to break my new beginner kit!! (no fires please!)

Hi everyone,

First off, I want to say I am so excited I found this place... I'm almost bouncing off the walls waiting for my first beginner pack to come in. While I'm waiting, I'm trying to absorb everything I can. I think I've watched almost every youtube video that has been mentioned throughout this site, and a few folks that frequent here, I've lived on their youtube channels for days!!

Creation of a object vault

 LMR 3D printing  group  is growing and 2015 appears to be our  coming out to the world  and every week there appears to be some object repository site  like thingiverse , 3d hub and so on. So why can’t LMR take its place in the world with an object vault for all things robotics.  With the ability to upload stl. Files on LMR sharing ideas never been easier.

IR and ultrasound based positioning beacons

I have this idea for a positioning system based on IR+ultrasound beacons. It is very simple, and I'm surprised that I can't find anything like that already in use. I guess there are some problems that I can't see, so I wanted to ask you to point the flaws in my idea before I invest time and materials into chasing a pipe dream.

The goal is to get an accurate position of a robot inside a room that is decorated with some additional beacons. The positions of the beacons are known to the robot, so that it can position itself relative to them.

6WD Differential Turning issue

Hi,

 

I have just completed building 6WD by follwoing the tutorial here.

Specs:

1. 200rpm 12v DC motor Max stall current: 300milli amp and normal current :60milli amp and 2kg torque each.

2. 6X125mm Off road tyres

3. 12v battery with 4.5ah

4. L298N Motor Driver with Max 2amp output.

5. Aurdino Mega to control the drivers and aurdino UNO for transmitting wireless signels to Mega.

The issue:

what i notice is that the vehicle with PWM from 150 to 255 its able to move forward and reverse with out any issues.

The iPad of Dr. Moreau

Is anyone else getting weird renderings of the site on a tablet? Here's a screen cap I just landed:
ld5cWi8.jpgNever mind that johnnyalpha seems to be the logo out header, and that Duane's project picture is in the wrong box. What really disturbs me is

That ain't BDK.

How to sense the beginning and end of a ramp?

Hi guys,

I am a complete novice to building robots, yet have been

Dual-H-Bridge-DC-Stepper-DC-Motor-Drive-Controller

Im trying to use these module/shield to run 2 DC Motors it that simple ......i thought..... (at moment Arduino sketch only to run one to see if i can get to work) I have attached pictures of my set up and as much tech detail about Bridge as I have hop helps thanks a lot to any who can help/guide me in right direction

Connection to ardunio clone

enable A on pin 5 (needs to be a pwm pin)

enable B on pin 3 (needs to be a pwm pin)

N1 on pin 2 conrtols one side of bridge A

IN2 on pin 4 controls other side of A

not enough voltage for IR receiver to warrant high

Hi guys,

I bought a magician chassis from sparkfun that comes with the wheel encoder boards, but without the sensors. After doing a small amount of research, I thought I try it out making the encoder myself.

I bought a pair receiver and transmitter from a local shop, 2 pins each encased together side by side. I tied both the receiver and transmitter to the 5V output of the arduino board, and and the other end of the receiver to the input pin of the arduino.

Feedback on PopPet instructions

Hello all!

Firstly, just thought I'd let you all know that PopPet is going really well. Everything I need has arrived and I am now boxing up all the bits and pieces.

One thing that still needs finishing up is the PopPet build instructions. These aren't going to be included in the kit, but rather available on the website for viewing or download for offline use (due to costs of printing). A QR code is going to be in the kit to take them to the instructions.

Best way to extend LCD flex cables?

Hi All,

I'm in the process of acquring a CMOS camera, and I'm looking for a way to distance the camera from the circuit board that it is connected to.  I havent' counted the pins, but it looks like the LCD flex cable might have approx. 20 pins (+ or - 5 pins).

I don't yet know their spacing.  The options I'm thinking of are:

Parametric robot rover

Hi, I am just a beginner working on his little project, which is to:

create parametric design for robot rover ... (just rover), because I like a lot to programm the CAD model (actually written in Python which exports SCAD code that renders it)

and yeah, I want to try to 3d print everything (of course the "smallest" version possible to try it) at the start... (just because I don't have anything else ...). Final version should be made also from parts made on water/laser cutter

so here is what I have done so far (alias configuration I am working on):