ffellowship
Mineinjava
Frequency Fellowship: Examining Radio Wave Propagation from a High Altitude Balloon
Components (27)
| Reference | Value | Description |
|---|---|---|
| IC1 | ATGM336H-5N31 | GSM & GPRS & GPS Modules 9.7X10.1mm RoHS |
| Q1,Q2 | AO3401A | 30V 4A 44mΩ@10V,4.3A 1.4W 1.3V@250uA 1 Piece P-Channel SOT-23 MOSFETs ROHS |
| U3,U4 | CJ431 | 2.5V~36V ±0.5% 100mA Adjustable SOT-23 Voltage Reference ROHS |
| U5 | TPS61221DCK | 400 mA Step-Up Converter, Fixed 3.3V Output Voltage, 0.7-5.5V Input Voltage, SC-70 |
| U7 | MAX809STRG | |
| U8 | BMP280 | Absolute Barometric Pressure Sensor, LGA-8 |
| A1 | RaspberryPi_Pico | Versatile and inexpensive microcontroller module powered by RP2040 dual-core Arm Cortex-M0+ processor up to 133 MHz, 264kB SRAM, 2MB QSPI flash; also supports Raspberry Pi Pico 2 |
| AE1 | HF 14MHz ANT | Antenna with extra pin for shielding |
| AE2 | VHF 144MHz ANT | Antenna with extra pin for shielding |
| AE3 | GPS_ANT | Antenna with extra pin for shielding |
| C1,C8-C10,C17-C19 | 100nF | Unpolarized capacitor |
| C5 | 10µF | Unpolarized capacitor |
| C7 | 1nF | Unpolarized capacitor |
| C11,C13 | 180pF | Unpolarized capacitor |
| C12 | 300pF | Unpolarized capacitor |
| C14,C16 | 18pF | Unpolarized capacitor |
| C15 | 30pF | Unpolarized capacitor |
| J1 | Conn_01x02_Pin | Generic connector, single row, 01x02, script generated |
| J2 | Conn_01x05_Pin | Generic connector, single row, 01x05, script generated |
| L1 | 4.7µH | Inductor |
| L2,L3 | 560nH | Inductor |
| L4,L5 | 56nH | Inductor |
| R5 | 200kΩ | Resistor |
| R6 | 100kΩ | Resistor |
| R7-R9,R11,R12,R14,R15 | 10kΩ | Resistor |
| Y1 | Si5351A-B-GT | I2C Programmable Any-Frequency CMOS Clock Generator, MSOP-8 |
| Y2 | C135223 | Four pin crystal, GND on pins 1 and 2 |