Alternator Control for NB miata ('98-'05) for use with standalone engine management (not only Megasquirt)Designed by WestfieldMX5, Ships from Belgium
This board controls the alternator on the NB miata. On the miata, the oem ecu controls the alternator. When using a standalone engine management, you have no way of controlling the alternator. Th...Read More…
This board controls the alternator on the NB miata. On the miata, the oem ecu controls the alternator. When using a standalone engine management, you have no way of controlling the alternator. This board will keep the alternator voltage at an user adjustable value.
I designed this board because I couldn’t get the software PWM alternator control in the Megasquirt firmware working right. No matter what I tried, I just couldn’t get it right. When the fuse on my MS3 Pro finally blew, I decided to call it quits and design this pcb.
For the little time it takes to build the circuit, I see no point in spending hours trying to get software pwm right.
The board is proved to be rock solid to within 0.1 to 0.2V over the entire rpm band. Once installed and adjusted, you don’t have to worry about it ever again.
The board also has an output for your low battery warning light.
This is a board WITH PARTS for you to assemble. Assembly instructions can be downloaded on this page, under 'Documentation'.
Dimensions are 100mm x 20mm
Henk | Sept. 5, 2018
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