Nanode - Case Meshtastic cho XIAO ESP32S3 & Wio-SX1262

Description

While I wasn't looking to make the most unreasonably small Meshtastic node when I originally bought my XIAO ESP32S3 & Wio-SX1262 from Seeed Studio; however, it has become quite a Quixotic quest to come up with one nonetheless. Over the past few months, I've made progress on this design in fits and starts and finally got to a point where I feel it's usable. Extra bonus points if you pair this with an unreasonably large antenna…

This case requires some light modifications of your ESP32S3 module in the form of desoldering the pins. As a novice with the soldering iron, this did not pose a very large challenge and was done in a few minutes. 

I have provided both ventilated and non-ventilated versions of the lids to better suit your needs! 

Please send any questions, recommendations, and requests my way! 

Printing

• Printed in PET-G
• Print with the large flat sides towards the build plate.
•  Parameters
  • 0.4 mm nozzle
  • 0.2 mm layers
  • 3 Perimeters
  • 25-30% infill
  • Printed with supports everywhere to support both the USB and antenna openings. 

Post-processing

The hole next to the switch is sized to fit a standard 1.75 mm segment of filament, that will likely require a little deburring with a needle file (to maintain an interference fit). This works remarkably well with clear filaments to see the status LED. 

Depending on how tight of tolerances your printer can handle, light deburring of the case's button may be needed to prevent the button from sticking. 

Assembly

The challenge with this design is getting everything all together (think building a ship in a bottle). I definitely recommend using the stock thin IPEX to RP-SMA cables that came with the device to avoid needing to actively bend the cable to get it in place. 

I found the easiest way of putting it all together is looping the antenna cable down and around the USB side of the SX1216 module and seating the USB-C port in the opening before seating the bluetooth antenna (larger of the two supplied rectangular antennas) in the back side of the case.