Is the ground the pin on the edge of the Teensysaber or the dot next to it. Also does it have to be hooked up? Or can it come from the short edge of the Teensy? Also does the - battery never hook up to the board? I’m trying to figure out what I’m doing wrong. I still can’t get the Teensy to upload. I think it may be a power issue. But I’m at my wits end. Already on my second attempt on the Teensy board.
The ground is the "pin" (hole) in the corner of the board.
Yes, it must be hooked up, otherwise the Teensey and saber board will not be powered.
The BAT- on the short edge of the board is only connected to the FETs.
I know this can be confusing, it took us a while to figure it out. The ground pin provides a way to disconnect power from the electronics so you don't run down the battery. This is often called a kill switch. You have 3 options:
1 - The blade is the kill switch. Pins 1 and 2 of the blade (aircraft) connector act like a switch to connect the electronics ground to the negative battery terminal. When the blade is removed the circuit is broken and there is no drain on the battery.
2 - Add a kill switch. Many saber builders use a barrel connector as a kill switch. Wire it between the negative battery terminal and the ground pin.
3 - No kill switch. Just connect the negative terminal of the battery to the ground pin. The electronics will eventually run the battery flat. Removing the battery is essentially the kill switch.