Spot Welder Current Meter MCDM
Print Profile(2)
Description
Having used a spot welder for quite some time, I've always wondered about its true capabilities
Previously encountered current meters exceeding $200 lacked cost-effectiveness; this one found on a certain online marketplace presents a worthwhile acquisition.
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Beyond the module, you will need to prepare
M2*4 screws - x4 M1.4*4 screws - x2 (M1.6 also works)
6*6*4.3mm tactile switch button - x1
5V lithium battery with integrated charging and discharging module (as shown in Figure 1)
SS12D00 toggle switch, 3mm height, 2 positions, 3 pins
26/28AWG silicone wire - several
XH 2.54 2-pin female header with bent pins - x2
502030/402030 polymer lithium battery
https://detail.tmall.com/item.htm?_u=91jbb15ca5c1&id=745217759270&spm=a1z09.2.0.0.32c22e8dsDO4sb
Additionally, some quick-drying adhesive, double-sided tape, and high-temperature tape
Due to the compact design, meticulous assembly is required.
Recommended tools: heating plate/hot air gun, soldering iron, flush cutters, utility knife, appropriate screwdrivers.
Secure the toggle switch using quick-drying adhesive
Only two pins of the toggle switch are necessary, to avoid interference with the module PCB; trim and bend the excess pins.
The large aperture at the base of the casing serves as a light guide for the charging/discharging module's indicator light
A transparent PETG filament insert, trimmed with flush cutters, can be utilized.
PS: The Type-C connector integrated into the charging/discharging module should be removed; a heating plate, hot air gun, or direct severance can achieve this.
The original functional button was an 8*8 waterproof button, which proved too large and tall; a 6*6*4.3mm button has been substituted.
PS: Even within the same model number, toggle switches may exhibit dimensional variations; select a component ≤6mm*6mm from the bulk order.
If a tight fit occurs, use a utility knife for slight adjustment or apply WD-40 lubricant.
Adhere the battery to the bottom of the casing using double-sided tape.
Secure the wires and apply high-temperature tape over the battery.
Given that the spot welder utilizes 50-square millimeter wire, smaller Roselle coils are incompatible; larger coils with a 26mm inner diameter have been employed.
The coil is directly inserted and secured within the coil housing; if loose, use double-sided tape.
(The bent pins of the XH female headers should be trimmed; ideally, they should be flush with the PCB bottom after soldering)
The aperture above the rear light guide is the reset button hole; a SIM card ejector tool can be used during firmware updates.
Power on - blue indicator light
Charging - green indicator light
(Special note: Charging still occurs through the original module's Type-C port, as the current measurement module is originally powered via Type-C; the switch is connected upstream from the charging/discharging module; therefore, switching it on is necessary for charging.)
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License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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