Let's Make Robots!

display

Venus - public venue display robot

The Venus robot is a 125cm (4.1ft) robot designed for display at public venues. The base is an adaptation of my BigBot robot base and uses the T'REX robot controller combined with a 9inch Android Tablet for human interfacing using the touch screen.

Plot the Brazil's Flag on the Nokia 5110
Playing with my new toys, a sample of its possibilities. Read more
Calculates the distance and reports to an LCD
Using a
Hello LMRians, After finishing as runner-ups in the line following section of the Yantra 2.0 Robotics Competition, the organizers provided the team  a Roboduino, … Read more

My 8x16 led matrix

UPDATE:  6 Oct, 2013

Ok, I have been too lazy to update this as this was done a month or so ago. I hereby declare this project complete. It is now bigger and better! Below are some photos and a video of the completed matrix and driver board(click any picture for a larger view)-

The Matrix-

The driver board (front) -

Displays
After struggling for days with multiple designs, I have come up with something showable (I doubt this word exists). I have not included automatic movement here. I … Read more
Counts down from 9 to 0 and beeps too
This is one of my 1st Arduino projects. Along with Arduino, I've used a seven segmeent led display and a piezzo buzzer. First, it beeps to indicate start. Then, … Read more
Navigate around, controlled by wireless tilt/accelerometer enabled controller
Using a
I've been building things like this for a while, and actually, LMR was one of the first places that introduced me to hobby robotics. I had already been building … Read more

displaying numbers

hi this isnt really to do with robots but it is building something with electronics so i thought i'd ask here because i know the users are friendly and someone will probably be able to help me.

Allows your robot to control PC applications / display sensor data
Using a
Gobetwino is a free program designed to allow Arduino boards to control PC aplications. Because it reads a serial com port it is not limited to Arduino boards and … Read more

Can't figure out how this 4 digit display works

 

Sorry this isn't really a robot related question, just an electronics one.

I was cruising through a local electronics shop. They have lots of salvaged parts. They had a whole box of old 4 digit LED clock displays. Since they were only about $3, I picked one up. My son wanted to build a clock.

After working through all the connections, here's the schematic.

Can these displays be controlled by a Picaxe?


I found these 2 displays in an old cd/casete/radio combo and was wondering if they were worth keeping, 
and if they could be controlled using a Picaxe.
I know that a picaxe can control a display buy using a serial interface but these ones dont have that,
they have about 30 pins, not including the ones for the back lite. 
 
100_0580.jpg   

Cheap Lcd for picaxe etc

Hi,

I am new to LMR but for those looking for a cheap lcd I have found a brilliant one on ebay for under five pounds! It is 16x2, uses the hd44780 parallel driver, so can be used with picaxe etc, and even has a backlight!

I have just bought one but have yet to try it with a picaxe, will let you know when (or if) i get it working. Just follow the link below:

drive a parallel display using a 8574 port expander
Using a
Any parallelly interfaced character LCD you get these days will have a Hitachi HD44780 chip or a different one compatible with the HD44780. These usually have 14 … Read more