Roomba to arduino conversation

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Roomba to arduino conversation

Postby symbol » May 19th, 2017, 11:25 am

Hi;
I have 4000 series roomba and mainboard is fail. So i decided to use arduşno as mainbroad and i connected all sensors and motor to the arduino.

I have completed lots of part but have some questions;
charging system. I am using orginal battery nicd, i remember that roomba open mosfets for charging than is starts with constant current charging. For my circuit can i use directly 1.25A fast charger with controlling voltage and temperature ? Or i can make basic circuit with lm317 and charge with 0,5A constant current and monitor temperature and voltage drops.

In orginal versiyon it is charging with 1.25A?
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Re: Roomba to arduino conversation

Postby mfortuna » May 19th, 2017, 11:44 am

There were two versions of the 400 series power supply. One put out 1.25A, the other was much less, maybe half. Half an amp would probably be fine.
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