The PRUSA Meter

The PRUSA Meter is perfect if you've ever been curious about how much power is coming out of your wall, watts your printer is consuming, amps your printer is drawing as well as total killowatt-hours consumed over a length of time.  I used off-the-shelf components and simple printed parts to build the assembly along with fairly standard tinkering hardware.  My prototype is printed in Prusa Jet Black and Prusa Orange PETG to match my printers.  I decided to use a GFCI Decora receptacle, but it is not entirely necessary and a standard Decora style receptacle would work fine.  You could also use a Decora that has the standard receptacle as well as the USB ports if you'd like to charge your phone or something else with it.  Follow the wiring diagram that comes with the Drok Power Meter.

The hardware listed is merely a suggestion, if you find something that works for you, go for it.

Bill Of Materials:

(1) GFCI Receptacle

(1) Drok 4-Function Multimeter

Length Of Appropriate 3-Conductor Power Cord (Under 9mm Outside Dimension)

Appropriate 3-Prong Male Plug End

(4) M5 Heat Set Inserts For Affixing Faceplate

(4) M5 Heat Set Inserts For Optional Housing Mounting Holes

(2) M5 Heat Set Inserts For Optional Holder Bracket

(2) M3 Heat Set Inserts For Cord Strain Relief Connector

(2) M3 x 10 Socket Head Cap Screws For Cord Strain Relief Connector

(2) M3 x 10 Socket Head Cap Screws For Attaching Receptacle

(2) M3 Washers For Attaching Receptacle

(2) M3 Hex Nuts For Attaching Receptacle

(2) M5 x 10 Socket Head Cap Screws For Attaching Faceplate

(2) M5 x 12 Socket Head Cap Screws For Attaching Optional Holder Bracket To Housing

(2) M5 x 8 Socket Head Cap Screws For Attaching Optional Holder Bracket To Shelving

Printed Parts:

(1) Housing

(1) Clamp

(1) Faceplate

(1) Optional Holder (Mounts Multimeter Housing To Common Hardware Store Shelving)

I printed all parts with standard Prusa PETG settings with my seam orientation set to “Aligned”.  To set the heat set inserts, I use a Weller Soldering Station set to 550 degrees F. 

I also attached a file for a Faceplate with a blank receptacle so you can add your own.