Let's Make Robots!

My First Robotics Platform!

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This is my picaxe 20m2 dev board. It has picaxe itself, a LM7805 voltage regulator and two DIL sockets, one for ULN2803 and the other for L293d (already in place). Those four copper wires (I know that looks a little unusual but there wasn't any other way in which i could connect picaxe with L293d :P) in the above photo are going from the output pins of the picaxe to the input pins of L293d.And I am using three polarised male headers set instead of that usual 3.5 mm jack for the programming purposes cause I think that 3.5mm female connector is a lot more space consuming.

Another picture.

Here's the basic platform that i'll be working on in some of my starting robots. It has two geared motors (one for each side) which enables it to move.I choose this tank mechanism so that I can upgrade to tracks later on (I am working on making my own tracks). I have used a perf board to make the main chassis cause it is easier to add more components like proximity sansors, robotic arm etc. later (i can use male headers to keep the extra components in place). The batteries are positioned underneath the perf board.

.Here's another picture

Comments, suggestions, advices are welcome.

 

Thank You :)

 

 

 

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I too use a matchstick or a gas burner to get that enamel off the ends. And your idea of using flux if great, though i never used flux before soldering those wires. I'll surely try that the next time i have to solder such enameled wires.

I usually found that putting solder on the wire first, before putting it in place in the circuit worked best, to make sure it would take solder well. Resin-core solder will work if you do not have flux (resin) separate.

 

ADDED: Looks like a good simulation of the Picaxe project board.  Good job.

 

Thank you, but i wasn't making the same picaxe board. Actually at first i added only the ULN2803 on the perf but later i had to add the L293d when i needed to run motors. And it coincidentally became the same 28x style picaxe board. :P

We have an old saying that "Necessity is the mother of invention".  You had the same needs (necessity), so you came up with the same sort of creation (invention). I totally understand that.  It is the same reason some of the robots end up looking quite similar to others. Given the same desires for what the robot can do, and given the same parts available, they can often look quite similar.

Even the chip layout on the boards can be similar without any intent to do so, just because the pins that are needed come out of the chip(s) in a certain side.

I started Edwin's board with that in mind and intentionally put his L293D chip on the other side for just that reason, —to be just a little different. But had I not done this by purpose, it would likely have been the same or similar layout.

Nice and clean construction. Post video ;)

I think I would have opted for insulated wires to make the interconnects. If anything conductive falls on top of your wires, you could have problems.

They are insulated copper wires (with some insulated coating). I found them from an old transformer core.