2.7 KiB
2.7 KiB
Microcontroller: STM32G071RB
- 32-bit ARM Cortex-M0+
- 64 MHz
- 128 KB of Flash memory
- 36KB of SRAM
- I2C, SPI, and UART,
- Hella low power
- $3.64
- 10.51 for a devboard (it has a built-in st-link)
Telemetry: HopeRF RFM98W LoRa Module
- Low-power
- 0.3 kbps to 37.5 kbps and
- -148 dBm
- 10$
Custom Flexible PCB
Why? Mostly because we can, but it also minimizes the weight and makes the whole thing more rigid and not susceptible to fall damage.
Sensors
- BME280 - 5.50
- Pressure, Humidity, Temperature, Altitude
- Accelerometer and Gyroscope: MPU6050 6-axis IMU - €3,75
Estimated** Costs
| Description | Quantity | Unit Price (EUR) | Source |
|---|---|---|---|
| STM32G071RB | 1 | €3.64 | STMicroelectronics |
| 433 MHz Wireless Transceiver (RFM98W) | 1 | €10 | TinyTronics |
| Custom Flexible PCB (5 pcs) | 1 set | €30 (?) | JLCPCB |
| BME280 Sensor | 1 | €5.50 | TinyTronics |
| 6-axis IMU (MPU6050) | 1 | €8.50 | TinyTronics |
| Standard 9V Alkaline Battery | 1 | €2.00 | Amazon |
| €57.64 |