01-17-2016, 02:41 PM
I just finished built a temporary holder for my dosing pumps.
I thought hooking them up could not be simpler. But it turns out I must have made some boo boo during the construction.
I'm measuring roughly 2.5v on the pump outputs. But that does not change when the pumps should run and drops right away when loaded.
When I measure the pins on the Ardiuono (Board rev 1 I think/hope) I get a short impulse of a few volts, but they drop away almost instantly. Looks like something is loading those pins too high.
My suspicion is that I did something wrong when soldering the drivers.
Which chip is that on the board? Once I know which, I can probably trouble shoot it with the datasheet.
I thought hooking them up could not be simpler. But it turns out I must have made some boo boo during the construction.
I'm measuring roughly 2.5v on the pump outputs. But that does not change when the pumps should run and drops right away when loaded.
When I measure the pins on the Ardiuono (Board rev 1 I think/hope) I get a short impulse of a few volts, but they drop away almost instantly. Looks like something is loading those pins too high.
My suspicion is that I did something wrong when soldering the drivers.
Which chip is that on the board? Once I know which, I can probably trouble shoot it with the datasheet.
