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Heltec LoRa32 V3 Meshtastic Case with Encoder/Buzzer/Vibro/GPS/Environment sensor/Belt clip/M5Stack CardKB Keyboard-ready
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This is a customized 3D model of an enclosure designed for the Heltec V3. The original design was created by slabua
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Updated at source:
Model information
- Source
- Printables
- Category
- Electronics
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
Printing Recommendations:
- Use adaptive layer heights (up to 0.2mm max) for optimal surface quality and faster print times.
- Tree supports recommended for clean and easy support removal.
Components:
- Heltec LoRa32 V3
- NEO-6M GPS Module NEO6MV2
- SMA Female to IPX UFL/IPX Extension Cable
- GY-BME280 (3.3v)
- 3.7V 974058 3000mAh Lipo Polymer Lithium Battery
- EC11 rotary encoder
- Mini Vibration Motor DC 3V
- Active buzzer 3V
- HY-4P (for M5Stack CardKB Keyboard)
- Antenna (in my case 433MHz soft antenna)
Wiring:

| Encoder A | Heltec 5 |
| Encoder G | Heltec GND |
| Encoder B | Heltec 6 |
| Encoder Sw1 | Heltec 7 |
| Encoder Sw2 | Heltec GND |
| Buzzer + | Heltec 45 |
| Buzzer - | Heltec GND |
| Vibro + | Heltec 40 |
| Vibro - | Heltec GND |
| GPS VCC | Heltec 3V3 |
| GPS RX | Heltec 48 |
| GPS TX | Heltec 47 |
| GPS GND | Heltec GND |
| BME280 VCC | Heltec 3V3 |
| BME280 GND | Heltec GND |
| BME280 SCL | Heltec 42 |
| BME280 SDA | Heltec 41 |
| HY-4P Black | Heltec GND |
| HY-4P Red | Heltec 3V3 |
| HY-4P Yellow | Heltec 41 |
| HY-4P White | Heltec 42 |
It is possible to use a 2N2222 NPN Transistor to enable/disable the GPS module.In that case, the GPS connection needs to be modified as follows:
| GPS VCC | Heltec 3V3 |
| GPS RX | Heltec 48 |
| GPS TX | Heltec 47 |
| GPS GND | 2N2222 C |
| 2N2222 B | Heltec 46 |
| 2N2222 E | Heltec GND |
Assembly Hardware:
- 3 x M3x5mm screws for securing modules inside the case.
- 2 x 2x8mm self-tapping screws.
- 1 x M3x15mm screw for the belt clip.
- 1 x M3x8mm screw and 1 x M3x15mm screw for assembling the enclosure.
- 6 x M3x6mm heat-set inserts for reinforced threaded mounting points.