In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Sparks-R-Fun wrote:

I think you will be ready very soon to make use of an LCD.  So give it another thought.

If you are purchasing items, grab some 0.1uF and 0.01uF capacitors (and maybe some very big ones), some common resistors (grab bag?), some straight or right angle pin headers and maybe some push buttons.  You might also find I2C EEPROMS and a few MAX232 serial drivers useful.  

[B]Tip:[/B] I have also found a piezo speaker to be useful especially as a non-visual debugging tool.  For one particular project with several distinct operating states it was extremely beneficial for me to be able to hear by the tone emitted what state the device was in and how often it was changing states.  I could have my hands and eyes engaged elsewhere and still discern if the device had switched states properly.  All good robots should have a means of making noise!

Finally, if you have never controlled a hobby servo before, pick one up and discover how easy to control and useful these little motor marvels can be.

- Sparks

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