Let's Make Robots!

Working on a PICAXE board for robot building - working on v0.9

I'm getting on with making a small PICAXE-driven board similar to the uBotino. I've got it moving along and am ready for other thoughts at this point.

A quick copy/paste from my blog with a little more info:

The Rev-Ed board is nice but there are a few features I don't care for. My PICAXE 20X2 Robot Builder Board does away with/adds those things. And it's only 50mm square.

2nd ed.-

Tablet can Program?

Tablet Like Samsung Galaxy tab 10.1N can Program a Robot,...,?? Please Help me ASAP 

Read PWM value of a RC rx with an arduino

Hi everyone,

Having recently  found a chassis that is not motorized ( snow service toy ).

Transmiting Video/ serial data

Well after seeing Jim lovells updated bot i've decided i want my next project to go towards that direction. Sorry i still dont know how to link the post right but its here, http://letsmakerobots.com/node/6820. And starting either next year or in a few weeks ill be be the president and founder of our schools new robotics club : ), i think for the first meeting i would want to show a bot that would demonstrate a wide range of tech.

28x2 Board --Your Wish List

Well, with all this Walter work going on, I find myself sorta longing for a small, fun tabletop robot --just to play with. I was looking at the standard picaxe 28x board and again, I remember how much it really sucks. No EEPROM space, ADC's have the data pin in the center, no HPWM output to the motor driver etc. etc. I know I have asked this in the past, but my PCB designing skills have gotten a lot better sense then. So, I ask again...

What pisses you off about the current 28x picaxe board and what would you want if you could have anything?


LMR meetup in Denmark?

Hi guys,

As I was asked to show some robot-stuff on a local museeum, they also invited us to make an LMR meetup at their place.

I am not sure about anything, especially if we could pull enough people for it to be worth the efford. I would say that we should be at least 25 for it to be a success, and that is a lot of people to pull that far. But I may be wrong.

They offer food and a cool place to be (It is museum for electronics) in a weekend, sometime in a weekend between week 39-42.

Arduino Scan Function

This is for another project beside the LED cube i started on. (I messed up real bad so I'm moving on). I need to get my Arduino to run a scan function. But I need it to run only once in the loop. I need it to send variables to other functions. It's kinda hard to explain, so i'll map it out a bit.

void setup(){

All this good setup stuff...



void loop(){

I am confused about how to use LiPo batteries

Hi all,

I am currently working on a new robot and I will soon have to choose a way to feed it with power.

I've been reading about LiPo batteries, but I am still confused about how to integrate this kind of power supply in a robot. Here are a few questions I have in mind :

Gear motors... too slow?

I was looking for small gear motors and I found two nice ones: http://www.robotshop.com/ca/solarbotics-gm7-gear-motor-7.html and http://www.robotshop.com/ca/solarbotics-gm10-geared-pager-motor.html. The first one has a 120:1 gear ratio and the second 81:1. Are these ratios too slow for a robot about 6x6 cm big?


Andrew Terranova wants to talk robots. Follow along for interviews, instructional videos, discussions, robot news from LetsMakeRobots and more!

Episode List

Are you ready for the next LMR robotics challenge?


Are you ready for the next LMR robotics challenge?

After the success of my last game Cross the Gap. We had to give you guys another challenge of equal difficulty for you to rack your brains around. Its your chance to come up with creative solutions to win robot related prizes! This time we have asked a guest game official to be the judge of the event and to pick the game winners.


The Game:

serial to parallel or something else to save on pins

I've been tackling a very simple project building a 3x3x3 led cube and running it from a 555 timer and a 4020 binary counter, this provides outputs which essentially switch on and off strings of 3 LEDs in patterns. I thought this was cool for a couple of hours and a £2 investment.....

then I looked at youtube and got jealous !

I now want to build a larger matrix - or at least a 3x3 where each LED is able to be operated independantly of the rest (instead of 3's) . I'd like my BS2 to do this, but the little rascal of course has only 16 pins! .

Robotic Bee Colony


I was out for the weekend and it seems there was a lot of talk on this subject. It happened that I had one of my bee hives swarm and I had trouble retrieving it. However, this gave me a thought of changing the theme a bit: Robotic Bee Colony. 

Remote controlled unmanned power-chair

Ok, My idea...


I have reason to need a bluetooth or r/f remote controlable powered wheelchair. To be able to remotely turn it on (& off) and manouvre it from an outdoor shelter over to a freshly parked car's drivers door.

What I have at the moment is just the base power chair:

Powertec F50 by Sunrise Medical


What I wish to do as much as is possible is to leave the current set-up as it is, and to add the propsed r/c system to work along side it.