how to make this DTMF ROBOT?

if this question is stupid plz  sorry
I made a dtmf based bot ( car) using mt8870 ic   (without any programming)
now i am trying to make another bot with some new features 
i need to control 8 things 
1 forward          -- when 2 is pressed                                 
2  backward     -- 8 is pressed
3 left                 --  4 is pressed
4 right               --  6 is pressed
5 camera motor 1 forward and backward           -- 1 is pressed
6 camera motor 2 forward and backward           -- 3 is pressed
7 and two more motor forward and backward    --  7  is pressed
8 want to lit a led                                                --- 0
what will be the programming code i am using atmega 16 
plz tell

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Mayoogh (author) 3 years ago

is this sch correct or not

MT8870 4028_schem.png

Looks about right. Don't forget the supply pins ! Try it.

use some CMOS logic to decode the numbers, look for a binary to decimal converter, connect it to the 8870, and you will have up to 15 outputs

Mayoogh (author)  steveastrouk3 years ago

can u plz tell from where will i get schematics for this??

Here's a rough scheme to start you off

Mayoogh (author)  steveastrouk3 years ago

will this schematic work ??

Mayoogh (author)  steveastrouk3 years ago
Mayoogh (author)  steveastrouk3 years ago

ho sry i didnt understand this schematics
what is that (A B C D)??