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The time required to weld really depends on your battery source. I noticed that when the battery was running low, it took more time to get a good weld.
Originally I programmed the micro-controller to perform the following tasks:
- welding would be performed using 1 of 4 durations (25, 50, 75, 100ms)
- pressing the foot pedal quickly would send 12v to the solenoid for the currently set duration.
- pressing the foot pedal for at least 2s would switch to the next duration.
- each duration had an associated color (LED):
- blue - 25ms
- green - 50ms
- orange - 75ms
- red - 100ms
Later, I made the weld time configurable via the web ui.
Revised Pictures
Observations
With my batter fully charged, a 25ms weld did a good job most of the time. For some welds, I increased the weld time to 50ms.
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