Hello, We are very new to 3pi and also to electronics in general, so pardon if any question is silly.
We bought following items, and the goal is to attach three distance sensors to 3pi all the while making sure the line following function of 3pi remain intact. IMPORTANTLY, we do not want to attach distance sensors & their connections directly to 3pi but only onto the expansion set (which in-turn is attached to 3pi), and preferably we want to keep LCD also connected to 3pi. (worst case, i.e. if no other option at all, then we can remove LCD).
Expansion Board: https://www.pololu.com/product/979
Distance Sensors: https://www.pololu.com/product/136
We want to understand a few things:
1) What are the connections required (i.e. what wire of distance sensor should attach to what point of the expansion board) for all three distance sensors? A diagram or picture will be very appreciated.
2) We have attached the expansion board with 3pi using items provided with the expansion board. Do we need any more connections between 3pi and the expansion board so that sensors can be attached to the expansion board such that it in-turn connects to 3pi? (likely yes. in that case what more items and what more connections between 3pi and expansion set is required?).
3) As far as we understood, the distance sensor we bought is 'analogue' sensors and our purpose is also to measure the distance. So, we believe we need to connect the sensor only to the analogue points of the 3pi (and not to the digital points) correct? Please answer Q-1 accordingly.
If there is no solution to this problem with three analogue sensors, by keeping LCD also attached, there are few options we can think of for a different kind of solution:
Option-1: We can remove LCD
Option-2: We can replace one sensor for digital sensor (instead of analogue)
Option-3: Any other option if anyone can think of?
A) We have already looked into this: https://www.pololu.com/docs/0J26 , but being a novice it is not bringing us a clear idea from two point of views: (1) We need to attach three distance sensors, not two. and (2) We need to attach our sensors to the expansion board, not directly to the 3pi
B) We also have already looked into this: https://forum.pololu.com/t/connecting-three-sharp-digital-distance-sensors/7954/3 , but that is also not providing us clear idea because (1) it explains using digital distance sensors (while we have analogue distance sensors), and (2) it explains using m3pi expansion set while we have a normal expansion set (not m3pi).
Your help will be appreciated.
Many thanks in advance,