2 layers80 × 65 mm
2 layers67.1 × 14.2 mm
TARC Altimeter
juansala/TARC-Altimeter1Firmware for custom altimeter based off BMP280 pressure sensor and COTS altimeters. For use in low to high power rocketry.
- Size
- 67.1 × 14.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 12
- Pads
- 55
- Tracks, vias
- 130, 14
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 18 Jun 2019
- Updated
- 31 Dec 2020
Overview
TARC Altimeter is an open-source printed circuit board by juansala, from the juansala/TARC-Altimeter repository on GitHub. It is a 2-layer board of 67.1 × 14.2 mm with 20 parts on 12 nets, routed with 130 tracks and 14 vias.
It is built around the ATTINY85-20SU and BMP280. Its parts include 5 capacitors, 4 ICs, 3 resistors, 2 connectors and 1 diode. It belongs with the sensors and measurement boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATTINY85-20SU
SOIC-8-208mil-40℃~+85℃ 10bit 2.7V~5.5V 20MHz 512Byte 512Byte 6 8 Bit 8KB AVR Built-in FLASH SOIC-8-208mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
BMP280
LGA-8(2x2.5)-40℃~+85℃ 0.12hpa 1.5pa/K 1.71V~3.6V 1hpa 300nA 30Kpa~1.1bar I2C、SPI Integrated ADC and digital interface、On-chip calibration and non-volatile storage、Standby mode、On-chip temperature output LGA-8(2x2.5) Pressure Sensors ROHSBoschPressure Sensors
README
Project/README.mdTARC-Altimeter
Firmware for custom altimeter based off AtTiny85 and BMP280 pressure sensor, as well as COTS altimeters. For use in low to high power rocketry.
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2, R3 |
| 2 | 2.2uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C2, C3 |
| 2 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2 |
| 1 | 140 ohm | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C5 |
| 1 | 2.2 uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C6 |
| 1 | 470 uF | Capacitor_THT:C_Radial_D8.0mm_H7.0mm_P3.50mm | C4 |
| 1 | A23_Socket-TARC_Altimeter | TARC_Altimeter:A23_Socket | U1 |
| 1 | AP2210-3.3-TARC_Altimeter | Package_TO_SOT_SMD:SOT-23 | U3 |
| 1 | ATtiny85-20SU | Package_SO:SOIJ-8_5.3x5.3mm_P1.27mm | U2 |
| 1 | BMP280 | Package_LGA:Bosch_LGA-8_2x2.5mm_P0.65mm_ClockwisePinNumbering | U4 |
| 1 | D | Diode_SMD:D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | MagSpeaker-TARC_Altimeter | TARC_Altimeter:WT-1205 | SP1 |
| 1 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad | H1 |
| 1 | Power Switch | Connector_PinHeader_1.27mm:PinHeader_1x02_P1.27mm_Vertical | J1 |
| 1 | Programmer Breakout (Conn_01x06) | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | Q_NMOS_GSD | Package_TO_SOT_SMD:SOT-23 | Q1 |
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Questions
How big is the TARC Altimeter PCB?
It measures 67.1 × 14.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TARC Altimeter use?
20 parts, built around the ATTINY85-20SU and BMP280. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the TARC Altimeter KiCad files?
From the juansala/TARC-Altimeter repository on GitHub, at the commit this page was made from: the board is Project/TARC Altimeter.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the TARC Altimeter design in my own project?
Its repository states no licence, so its author keeps all rights: ask juansala before reusing the design.