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using continuous rotation servos 'instead' of geared motors

For the sake of simplicity i will use the start here robot to ask my question, as the controller in the robot I am building here will be no more complicated (2 motors, one sensor) than that, and use the same processor (picaxe28x1)

The question is; Would I be able to use continuous rotation servo's instead of geared motors as the means of transport.

The differences and complications i've run into are -

Serrxd - Oh god nothing is happening

Trying my hand at making a computer interface for a PICAXE28x2. Plans are for it to send serial data through the programming cable and for that data to be interpreted and acted upon by the picaxe. To test how this serial communications works, i've set up the following code on the picaxe.

 


interface:


    serrxd b0
    if b0 = %00000001 then
    sertxd ("Recieved")
    end if

    goto interface

 


Has the potential to be a slave-master to any of my projects.
Using a
This remote represents my journey from knowing absolutley nothing about RF communications, to a little bit. Built from scratch, the remote runs off a PICAXE 28X2 … Read more

Serial 4 digit, 7 seg LED display and picaxe 08M

I'm having a problem trying to control this display with an 08M.

by using the serial comms protocol from this manual for the display, all i achieve is scrambled flashing of zeros. After applying a smoothing cap to the power rail i have achieved relative stability, but its still just zero's that refresh their position every time the serout command is used.

Super Capacitor in solar power supply - a few queries

I intend to build a remote 'weather station'

The station will:

  • Be completley independant of any external power, ie, it will produce its own power via solar cell(s)
  • Measure temperature only
  • Transmit its finding over an RF link to an indoors reciever

Instead of using a rechargeable battery supply with charger circuit, i have decided to use a 35F, 2.7V super capacitor to smooth and store power.

Building a Universal RF Remote - Questions

More Recent UPDATE: the competed remote can be found here. Thanks to fritsl and rik for their respective helpfulness.

UPDATE: Attached (and blurrily pictured below) is my schematic that i think will work for this remote. Yes I drew it in paint, Yes it took too long:

*The "To Breadboard" leads are included so that the remote may also serve as a portable power supply.

 

 

 

Automated Light Switch - Laziness Prevails!

The Video explains all.

This is my automated light switch, built in a little under 2 hours. Just one application that a servo can be used for.

The servo is just mounted on some hastily cut masonite, the triangular brackets are just glued to the main board with PVA, and everything else is held together with double sided foam tape.

 

DSCF0832.jpg

 

 DSCF0834.jpg

Thinking of XBee Communication, a few questions before I jump in

What I intend to do is create a wireless link between my robot and my laptop, for remote serial programming, and remote control.

I posess a PICAXE 28X1 project board that i wish to connect with an XBee module.

From what I've seen in http://www.rev-ed.co.uk/docs/axe210.pdf an AXE210 is suggested. On page 9 however, we find that the XBee is only connected to the AXE by three pins: two inputs and one output.

    Based off the ever popular "How to build your first robot" by Fritsl, this is the most up to date version of my first robot, named Robet (Robe-et) Read more