Raspberry Pi – 3 Amp Direct Wire Power Adapter

Product Info

• Power your Raspberry Pi from your printer PSU
  • No soldering needed
  • NO USB CABLE INCLUDED
  • Works with MOST Raspberrry Pi Models
    • Tested in house with the 3B and 3B+
    • Pi 4 works but sometimes shows under-volt message when running synthetic load.
      • Normal OctoPrint usage showed no issues or crashing even if the under-volt warning appeared briefly.
• Supports from 6V-36V Power Input
• Also can power your EZABL EZ-Connect Model in addition to the Pi when using our EZABL USB adapter
• Puts out 5V at 3 Amps
• With a Pi 3B+ Connected pulls up to 0.3A @ 24V input and up to 0.6A @ 12V input.
• Dual USB Connections
• Optional Printed Case – Printed cases after 7/2018 do NOT have the honeycomb on the top, it was too easy to break so we made it a solid top. There is still the opening for the screw terminals.
  • Printed in Black PLA
  • Board is pre-installed in case when this option is selected
• Includes wire for power

Compatible Printed Case that ours is based on:

• https://www.thingiverse.com/thing:2852700

Wiring the Module

• Included is a length of 2 conductor wire.There is a red and black wire inside the single wire.
• Carefully strip the outer wire covering to expose the 2 wires inside
  • If you do not have wire strippers you can use a razor or a sharp knife. Don’t press too hard, just enough to cut the outer wire cover.
• Strip the Red and black wires at each end
  • Cut to the length you need before stripping if the included wire is longer than you need.
• Insert the red wire into the blue terminal on the side labeled “IN+”, tighten the screw terminal screw for that side down.
  • Do NOT over tighten. Just snug it so that the wire does not come out of the terminal
• Insert the black wire into the blue terminal on the side labeled “IN-“, tighten the screw terminal screw for that side down.
  • Do NOT over tighten. Just snug it so that the wire does not come out of the terminal
• Connect the other end to your printer power supply. Make sure to connect to the DC side (Usually marked with V+ and V-). Do NOT connect to terminals labeled L, N, and G (this may have an icon instead of G with lines)
  • The red wire connects to V+ on your power supply.
  • The black wire connectes to V- on your power supply.
• Verify that your red wire is going to IN+ on the Pi Direct Wire Power Board and the other end goes to V+ on your power supply
• Verify that your black wire is going to IN- on the Pi Direct Wire Power Board and the other end goes to V- on your power supply
• Connect a MicroUSB cable from the Pi Direct Wire Power Board USB port to your Pi MicroUSB Port
• Power on your printer. The Pi will then power up from the direct wire board.
  • Tidy up your wires so that it all looks nice and nothing is getting pulled on
• You’re done! Happy Printing!

Powering your Pi from the Module

If you get the Pi Direct Wire Power adapter as part of the kit you will need to supply a MicroUSB cable. When selecting a USB cable use the shortest one possible and not a cheap one. Cheap MicroUSB cables cannot handle the current that the Pi needs to run and if your cable is too low quality the red LED on the Pi (look inside the case near the MicroUSB plug) is off then the USB cable cannot handle the 2.5A minimum that the Pi needs to run. That being said if the Pi is working and printer is not stalling/disconnecting you can safely ignore the undervolt warning as the Pi will adjust it’s clockspeed to compensate for the voltage drop. We do still recommend using one of the many recommended, new cables below. Do not use a random USB cable you have had laying around for a while.

Recommended Cables:

• TH3D MicroUSB Cable: 3 Foot MicroUSB Cable – 100% Copper
• AmazonBasics: https://amzn.to/2nYmFzg
• MediaBridge: https://amzn.to/2nZgtXJ
• Anker PowerLine: https://amzn.to/2N9WlNk

Setup Video: