By default, the board requires a trigger press per weld. If you need continuous pulses (for seam welding), find the setting (Loop mode) in the main menu. Set it to ON . Warning: This will fire as long as the trigger is held. Use only with water-cooled pens.
2. Discharging Control Topology (Load Shedding / Over-Discharge Prevention)
3 Momentary tactile micro-switches labeled SET , ADD (+) , and DEC (-) Hardware Interface & Wiring Topologies Xh-m608 Manual
Connect the to the BAT+ terminal on the module.
| Symptom | Likely Cause | Solution | | :--- | :--- | :--- | | | No 12V power, or polarity reversed | Check VCC/GND wiring. The board has reverse polarity protection, but it may blow a fuse. | | Pulse light flashes, but no weld | MOSFET gate not connected to Pulse+/- | Wire the Gate of your FET board to Pulse+. Do not rely on shoddy jumper wires. | | Welds are burning holes | Pulse time is too high for nickel thickness | Reduce time to 1.5 ms and test on scrap metal. | | Welds are too weak (pop off) | Pulse time too low, or capacitor bank voltage sag | Increase time by 0.5 ms increments. Ensure caps are fully charged (5V-12V depending on build). | | Welder fires continuously | Trigger wires are shorted or encoder is stuck | Disconnect foot pedal. If problem persists, the MOSFET may be blown. | | Erratic timing / Screen flickers | 12V supply is unstable (cheap LED driver) | Use a regulated power supply or a small 12V lead-acid battery. | By default, the board requires a trigger press per weld
Connects to the positive terminal of the charging source (e.g., solar panel, charger) or the battery.
Once powered, the screen will light up. Here is how to program your weld time. Warning: This will fire as long as the trigger is held
These act as a dry contact switch. COM (Public): The common feed.
If the reading is inaccurate, many modules allow calibration by holding specific buttons during power-on to adjust the display to match a multimeter reading .
Displays the current battery voltage during operation. Displays parameters during setup.