Let's Make Robots!

Hi, I am new here and am starting my first robot project.

I have 10 years of IT and Computer experiance along with 5 years of Java and C# development. I am starting to learn C++ and have an idea of the first robot I want to build. It will be based on the tutorial on this website. The last time I did anything in BASIC language was when I was 10 lol. But anyway here is my list of hardware from what I have learned on this site so far. Can you please let me know if it will work or if I will need anything extra to make it work?


MOP-AL162A-BYFY display

  • Input Voltage: 5V
  • Display Current: 10 mA
  • Back Light Current: 150 mA

AXE Stack-28 Starter Kit (USB)

- 'AXE Stack-28 kit (includes PICAXE-28X1)
- PICAXE Programming Cable
- 2-Panel Solderless Breadboard
- Breadboard Voltage Regulator Kit
- 140 Piece Wiring Kit

PING))) Ultrasonic Range Finder

  • Range - 2cm to 3.35m (~.8" to 11.3')
  • Supply Voltage: 5V +/-10% (Absolute: Minimum 4.5V, Maximum 6V)
  • Supply Current: 30 mA typ; 35 mA max
  • 3-pin interface (power, ground, signal)
  • 20 mA power consumption
  • Narrow acceptance angle
  • Simple pulse in / pulse out communication
  • Indicator LED shows measurement in progress
  • Input Trigger - positive TTL pulse, 2 uS min, 5 uS typ.
  • Echo Pulse - positive TTL pulse, 115 uS to 18.5 mS
  • Echo Hold-off - 350 uS from fall of Trigger pulse
  • Burst Frequency - 40 kHz for 200 uS

Battery Holder 4-AA - will put 4 1.2V rechargeables in it.

Gear Motor and Tread Package GM3 - with an extra free wheel on both sides.

L293D Motor Driver IC

GWS Standard Servo x2

  • Bearings: Bushing
  • Gears: Nylon
  • 60� speed: .23 sec @ 4.8v
  • 60� speed: .18 sec @ 6.0v
  • Torque: 47.00 oz*in (3.38 kg*cm) @ 4.8v
  • Torque: 56.00 oz*in (4.03 kg*cm) @ 6.0v
  • Measurements: 1.56 x1.14x1.40 inches (39.6 x 29.0 x 35.6mm)
  • Mass: 1.45 ounces (41.1g)

Diffused Green LED x5 - for the mouth of the bot

32 Pin SIP Sockets - for extra pins'

SPDT Toggle Switch

25LC640 SPI Serial EEPROM - for more memory.


I do understand some about electronics but am only a beginner. I will also add to it 2 360 ohm resisters for the servos.

Now I know the design is up to me I just want to know as far as voltage and hardware is that all I would need for now?

I want to make this upgradable but for now the robot will just be able to avoid objects and not run off a table. Also be able to follow a line.


Thanks for your help.









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I will be getting this:

BittyBot Micro Line Sensor Kit


Hello, and welcome!  I'v read the previous posts and observed that you have been talking about voltage regulation.  You'll have to double check all your hardware to make sure that this will work, but I've used three 1.5V AA batteries to get 4.5V for my robot.  I've used the ping ultrasonic range sensor with 4.5V and it works fine, and picaxes will run on 4.5V.  I'm not sure about your servos though.

One thing is...It's very easy to get the 08M picaxe to work with the Ping Ultrasonic Sensor, but that is because you can change the inputs into outputs and vice versa.  The Ping sensor uses one line as the input and output.  You might want to make sure that you will be able to use the Ping sensor with your microcontroller.  If not, an alternative (but not the only alternative) would be the maxbotix ultrasonic sensors or sharp infrared sensors because they output an analog voltage that you can measure directly.  I do however, remember an article where someone got the ping sensor to work with a picaxe that wasn't the 08M.  You can probably search around the site and find that article.

I also noticed on your list that you got a breadboard regulator kit.  Will the regulator that it comes with not work?

Hope that helps.  Good luck!


Thanks for the info.

I am going with this one


The SRF05 with the Picaxe 28


I am still learning about the regulators. I know what they do in theory just have no experiance. So I am going to go with the feedback I get in here.

I ordered the parts. WOOT! now by next week I will be starting. I cant wait lol.

Hi LOL Geek,

Welcome !

I think Frits would say you forgot the hot glue gun and a bunch of paint sticks.

Rik would say you forgot the pizza box.

I would say you forgot the laser cannon, and the portable fusion generator (I'm still looking for mine)

Oddbot would say something useful - (except get wire-strippers don't use your teeth like he does)



The funny thing is I am getting a hot glue gun. :P And I have always used my teeth for stripping wires. Some habits are harder to break. Thanks for the welcome. :)

I found the LD293 really easy to use, only problem i found was with it overheating ( Im still to figure that out as ive been ill for two weeks =/). The ping)) i found really easy to get working and havent had any problems at all with it yet.


Thats my two cents :D



I am a little worried about the ping sensor. The Ping is a 3 pin set-up instead of a 4 pin. This has caused some problems for some people including me. There is a thread lying around here somewhere about it. I'll see if I can find it.
I am going with the SRF05 since it seems easier to connect. :)
I actually like the Maxbotix EZ1 sonars best, can read an analog voltage or pulse width, or serial.