Hello everyone,
two weeks ago, I had to bought a new Gshied for the shapoko to fix it.
https://www.inventables.com/technologies/gshield
I also order a relay board to control the spindle turn on/off directly from the software.
https://www.inventables.com/technologies/isolated-relay-circuit
The total order was $67.36 including shipping.
I will propose to vote the purchase of these two items tonight. Actually, I will propose the reimbursement since I have already bought, received and install it 
Julien