Easy robot: light follower

Step 3 The building of.

steps:
1. resistors
2. transistors
3. switch
4. LEDs, these are supposed to bend a bit (looking like bug eyes) i bent them about 90 degrees.
5. light dependent resistors, these are supposed to point forward. (solder them on and then bend them until they lyon the pcb.
6. variable resistors point them forward and next to eachother, that looks fun
7. AAA holder
8. motors, file them down so you can solder/glue them to your pcb/box. put these under an angle so the axis of the motor acts as a wheel
9. put some heatshrink on the motor. this wil get some extra grip and makes it go faster.

Comments

[thenmozhi]

can u plz explain me how this circuit works

[Bongmaster]

just lok at the circuit and u should be able to see how it works ;) i knew nothing of circuits til i bought this very kit and once i examined the diagram i understood what was going on :)

[Gerrles]

can u help me i dont understand the diagram and do u have to have that circuit board???

[dunnos]

I can try to explain how the circuit works... What do you know about electronics right now? Do you know how transistors work? And what do you mean by do you have that circuit board?

[Gerrles]

yea i know how transistors work and for the circuit board i mean that do u need a bread board

[dunnos]

you can use a breadboard if you want, you can also buy the kit or do it freehand, whatever your preference is.

[Gerrles]

can u post some pictures of connecting the transistor and stuff if u do that will really help

[dunnos]

what exactly do you want to see? do you want to know wich pins go where?

[Gerrles]

yea which pin goes where thnx

[dunnos]

Let me make this a learning experience:
for the pins of the bc557c: click here

for the pins of the bc547c: click here

[Gerrles]

u know im only 12 im doing this for my project and i dont know the bc557c or the bc547c because my PDF donesn't have english

[dunnos]

What do you mean with: my pdf donesn't have english? you mean you can't read an english datasheet? Or is adobe reader not cooperating?

also, do you have the kit or are you doing this on a breadboard?


flat side facing you:

BC557C: the leftmost pin is the collector
the middle pin is the base
the rightmost pin is the emitter

Same goes for the BC547C.
On the image the flat side is the bas
the line going right and up is the collector
de line on the right downside is the emitter.

Can you figure it out now?

[Gerrles]

adobe reader is not cooperating and i dont have kit or breadboard. Im building it free hand and not really, can u try the diagram from http://www.instructables.com/id/How-to-Build-a-Robot---The-BeetleBot/ step 16

[dunnos]

I already built that one, I really liked that build :) I suggest the beetlebot V2.

[Gerrles]

so if u just put picture of which pin to which pin would be fine and my teacher keeps saying im not talented

[dunnos]

What a nice teacher you have -_-