Modular Snap Together Case Top for Rpi4 + Power fan hat
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A modified __raspi_top_1_06A_SS_DEEP case top that can fit a power + fan hat from BCRobotics
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Informacje o modelu
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- Printables
- Kategoria
- Electronics
- Licencja
- Creative Commons — Attribution — Noncommercial — Share Alike
Motivation
I wanted to add a power hat so that the raspberry pi can be powered by the 24V (or 12V) rails from the Prusa PSU. This allows you to connect a raspberry pi to your Mk4 printer without a separate usb-c power wort, reducing cable mess. I used this hat from BCRobotics[1]. The recommended power input for the hat says 7-16VDC input, but the chip it uses should be able to use 24V. I haven't run into any issues with 24V.
Build Instructions
- Print the case top (this project)
- From the original project print:
- Case bottom: __raspi_bottom__1_05-SS_4.STL
- Side rail: __ss_rail_1_04-MK3S_DEEP.STL
- Use some screws to attach Side rail to the mk4 frame.
- Assemble the case top (this project) with the case bottom (from Sneak's original project) around the raspberry pi and power + fan hat
- Slide assembled case onto side rail
- You're going to need some way to connect to the 24V (or 12V) PSU power to the 2 power pins on the hat. I used a spare pair of fork connectors, some Anderson Powerpoles[3], and 22AWG solid core wire[4] and hooked it up the heatbed power on the xBuddy Board. (Refer to picture)
- WARNING: Make sure to connect the power wires to the power + fan hat while the PSU is turned off, then power on the whole system. Otherwise 1) the MK4 might panic about unexpected current draw and 2) you don't want to have 2 free wires at 24v with a high current limit that might short as you try to connect them.
The fit of the case top is extremely tight. Make sure you don't break anything as you fit it in. I was also able to connect a camera ribbon. I also used some standoffs[2].
PS
I've also included the step file. I'm not good with Fusion360 and the work is very amateurish. Unfortunately Sneaks hasn't released the STEP file for his original model case top and I only re-parametrized the parts I needed to make the power + fan hat fit.
Links
- https://bc-robotics.com/shop/raspberry-pi-power-fan-hat/ Note this model doesn't have the header pins soldered. This model does: https://bc-robotics.com/shop/raspberry-pi-power-fan-hat-assembled/
- https://www.adafruit.com/product/3658
- https://en.wikipedia.org/wiki/Anderson_Powerpole
- https://www.adafruit.com/product/1311