Heltec V3 Meshtastic Case GPS 3000mAh 电池箱

Heltec V3 Meshtastic Case GPS 3000mah Battery

2024-03-29 20:45:11

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Heltec V3 Meshtastic Case GPS 3000mAh 电池箱

Summary

This is a remix of tgikal excellent Heltec V3 case. I modified it for a 3000 mAh battery, modified the lid to better connection to to the type-c and slightly larger gap around the buttons.

Printed parts:

Case Front
Case Back

Purchased parts:

Heltec V3 - https://www.amazon.com/dp/B0BNMH9ZLH?psc=1&ref=ppx_yo2ov_dt_b_product_details
GT-U7 GPS - https://www.amazon.com/dp/B08MZ2CBP7?psc=1&ref=ppx_yo2ov_dt_b_product_details
3000mA - battery https://www.amazon.com/dp/B08T6GT7DV?psc=1&ref=ppx_yo2ov_dt_b_product_details
switch - https://www.amazon.com/dp/B09R3ZWBBC?psc=1&ref=ppx_yo2ov_dt_b_product_details
(6) M3 x 20 bolts and https://www.amazon.com/dp/B09MYDQCXX?psc=1&ref=ppx_yo2ov_dt_b_product_details
(6) M3 nuts (Comes with above)
Wire - https://www.amazon.com/dp/B07GD2BWPY?psc=1&ref=ppx_yo2ov_dt_b_product_details
915MHz LoRa Antenna - https://www.amazon.com/dp/B0CTXL61LY?ref=ppx_yo2ov_dt_b_product_details&th=1

The board seats by putting the USB side in first, then flexing the front and slipping the other side under the hook. (I Cut this off the hook and just push it in)

Power switch can be glued or heat staked. (I melted plastic posts to hold switch)

The batteries I used required me to change the 2.0 JST to the included 1.25 JST, the polarity matched the cable included with the board. (The battery I used was already 1.25 jst)

I soldered the GPS Vcc to Heltec 3.3V, GPS GND to Heltec COM, GPS TX to the Heltec pin 45, and GPS RX to Heltec pin 46. (I used 47 for RX and 48 for TX)

In Meshtastic's configuration, the RX pin is 45 and TX is 46. (I used 47 for RX and 48 for TX)