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Michael edited this page May 8, 2020 · 12 revisions

MPG

Use three BC337 (NPN) to switch Axis (1 Port toggle) and Feedrate (2 Ports mux):

```
Mach3 Port ---c b e ---[2k2]--GND
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                |
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                _
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                2
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                k
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                2 
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                -
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                |
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           Arduino-Port
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Jogwheel Mach3 A low : Pin 10 B high : Pin 11 VCC : PC 5V GND : 0V
GND also to GND under P15

Arduino

Digital 2, 3, 6 : switching transistors (see source) Digital 4,5 : Inputs for Buttons Axis and Feedrate to GND

Couple all GND, Arduino and Mach3 together !

It works !