kair.us/ projects/ weller_driver/ diy_wmrt_handle/
DIY Weller WMRT compatible handle
Here are desoldering tweezers that you can build yourself. They
use Weller
RTW series tips and can be used with my DIY Weller WMRP and WMRT compatible
soldering station. Of course you can also use it with
genuine Weller soldering stations which support WMRT, e.g. WD1M,
WD2M and WR3M.
The design consists of 3D printable handle and a PCB. The handle is
designed by Rens PA3AXA and the PCB is designed by me. You can
download all required files below. I have uploaded the PCB design to
PCBWay and you
can order bare boards from here. If you haven't yet registered
to PCBWay, you can register
via this link and get some free initial credit (and also earn
me some credit as well).
wmrt_handle_3d.zip
3D-printable
handle design STL files
wmrt_handle_drawing.pdf
Circuit diagram, assembly drawing and bill of materials
wmrt_handle_pcb.zip
Schematic and board file,
designed with Eagle 5.12
wmrt_handle_gerbers.zip
Gerber files
The build is quite straightforward. It is important that you first
screw the Binder 09-9792-20-05 connector to handle and then solder
the PCB to the connector. For getting parts, I have listed TME,
Digi-Key and Farnell order codes to the assembly drawing above.
Digi-Key doesn't sell the Binder connector, though. The small reed
switch is used for standby function, and can be difficult to source.
If you don't need automatic setback and standby function, you can
omit the reed switch.
The picture above shows inside of the handle. The Binder connector
is soldered to top side of board, unlike instructed in assembly
drawing. It works both ways, because both heater and thermocouple of
tips are swapped.
Below are some more pictures of the construction.
kair.us/ projects/ weller_driver/ diy_wmrt_handle/
page created 12.3.2020
last updated 28.3.2021 webmaster@kair.us