Electronics > Microcontrollers

can you run a Microcontroller off a Microcontroller

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PeterG:
I would like to know where the 94-100 pin count comes from. He only needs about 36 io pins based on the description.

8 for the 8 led display.
8 for the 8 temp sensors if DS18b20 or similar are used.
17 for the fan control outputs.

Or did i miss read something.
 
Regards

jaRON:

--- Quote ---I would like to know where the 94-100 pin count comes from. He only needs about 36 io pins based on the description.

8 for the 8 led display.
8 for the 8 temp sensors if DS18b20 or similar are used.
17 for the fan control outputs.

Or did i miss read something.
 
Regards
--- End quote ---

80 for the 8 of the  8 led display.
8 for the 8 temp sensors
6 for the fan control outputs.

PeterG:
Could you multiplex the displays to reduce the number of pins required for the displays?

Regards

Hypernova:
No way should you waste so much IO for the LED's, just use a chain of shift register and hook it up to the uC's SPI port.

jaRON:
is it easyer to use a lcd then the  led bar graph

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