The Part List
Here is a list of all the parts i needed to build the robot (excluding basic tools).
|Part Description||Quantity||How much I paid||Where I got it||Extra Info|
|Nema 17 size stepper motor||2||£14 each||Rapid Components|
|Sharp IR GP2D120||2||£12 each||Active Robots||Make sure you get the cable with the JST connector. Some companies ship the sensors without.|
|Microchip PIC18F4525 microcontroller||1||Free Sample||Microchip Samples||
You'll need an obscure email address to register. I used one from tranceaddict.net. This is a great source of chips, but don't abuse it. Only get what you need.
|~£2||CPC Farnell||You can buy crimping tools to make the cable making process easier. I managed with just pliers but it was sometimes quite unreliable. Check out the connector tutorial.|
|ULN2803 chip||1||£1||CPC Farnell||Array of 8 transistors for driving the motors.|
|7-segment LED Display
||A tutorial for these is here.|
|7805 5V Voltage Regulator
1 x 10K
2 x 100R
||I had them allready.
||If you don't already have resistors and capacitors, you can find them at any hobby electronics store.|
1 x 1mF10V
1 x 470uF16V
2 x 22pF
||I allready had them.
|5mm thick acrylic
||about 25x35 cm
||If you can't find acrylic, there are many other types of material you can use. HDPE, plexiglass, maybe even MDF.|
Making the main microcontroller board