Current Part:
· 9 Volt Power Supply
· 12 Volt Power Supply
· Tiny-ICD2 PIC Programmer
· DB-9 Serial Cable
· Olimex P-40 Development Board
· 12v DC Motor
· LMD18245 H-Bridge
(Scroll Down for Parts Descriptions)
Parts List Details
You may or may not be familiar with the parts above so a picture of each item has been included to clear up any possible questions.
Olimex P-40 Development Board & 9v Power Supply
This development board is built & sold by Olimex. It has a very simple layout that is great for beginners. It features a 20 MHz clock, (for the PIC this means it executes 1 instruction every 1/5,000,000 of a second). The 9v Transformer just provides the DC power required by the board. A 9v battery could easily take its place.
ICD2-Tiny Pic Programmer & 15v Power Supply
This is a smaller version of the larger & much more expensive ICD2. ICD stands for In-Circuit Debugger. This means that the programmer not only programs, but also features debugging capabilities.
12v Power Supply
This will be used to provide power to the dc motor. Luckily our motor doesn't sink much current so a lower power wall adapter can be used without sacrificing motor performance.
DB-9 Serial Cable
There is really nothing special about this cable. It just a standard 9-pin Male->Female serial cable. Make sure your computer has a serial connection! Many newer laptops only have USB ports and no COM (communications) port.
12v DC Motor
This is a standard DC motor. There is nothing unique or special about it. Hook up power and ground to a battery and the motor spins! The next part of the tutorial will quickly go over dc motor theory.
LMD18245 H-Bridge
The LMD18245 chip is a rather odd looking chip with non-standard pin. It has 15 Pins in total although we won't be using them all. This chip is manufactured by National and you can get free samples of it at their website.