2 layers52.1 × 116.8 mm
DIY Uncertainty
oamodular/uncertainty
This readme needs to be updated to reflect this and to talk about the many other languages that people have used to create new firmware for Uncertainty.
67 parts43
2 layers
ATP Teensy
UCI-Rocket-Project/AFS-PCBPCB containing all sensors used during flight
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 26
- Nets
- 96
- Pads
- 155
- Tracks, vias
- 143, 3
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 25 Oct 2022
- Updated
- 16 Mar 2023
Overview
ATP Teensy is an open-source printed circuit board by UCI-Rocket-Project, from the UCI-Rocket-Project/AFS-PCB repository on GitHub. It is a 2-layer board with 26 parts on 96 nets, routed with 143 tracks and 3 vias.
It is built around the TEENSY 4.1 and L7805CV. Its parts include 7 capacitors, 4 connectors and 2 resistors. It belongs with the sensors and measurement boards and the NXP (LPC, Kinetis, i.MX RT) boards of this library.
Main components
2
TEENSY 4.1
Development Boards & Kits - ARM ModuleSparkFun ElectronicsUncategorised
L7805CV
TO-2200℃~+125℃@(Tj) 1 1.5A 2V@(1A) 35V 5V 68dB@(120Hz) 8mA Fixed Over Current Protection、Over Temperature Protection、Short Circuit Protection Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdUCIRP Avionics Flight Sensor (AFS)
v1.1 "Rigel" (a star in Orion's constellation)
The board includes:
- Adafruit BMP388 Barometric and Pressure Sensor
- Hitlego MPU-6050 Accelerometer and Gyroscope
- Adafruit Ultimate GPS
- Digi XBee-PRO XSC S3B
- Sparkfun XBee Adapter
- Teensy 4.1
- Linear Regulator (9V -> 5V)
Communication Protocols Used:
| Component | Communication Protocol |
|---|---|
| BMP388 | SPI |
| ECU 1.5 "Orion" | I2C (Wire) |
| GPS | UART (Serial 2) |
| MPU-6050 | I2C (Wire 1) |
| SD Module | SPI |
| XBEE | UART (Serial 6) |
Pinouts:
BMP
- CS -> 10 CS
- SDI -> 11 MOSI
- SDO -> 12 MISO
- SCK -> 13 SCK
ECU 1.5 "Orion"
- SDA2 -> 18 SDA
- SCL2 -> 19 SCL
GPS (Serial2 port in Teensy 4.1)
- TX -> 7 RX2
- RX -> 8 TX2
MPU (Wire1 port in Teensy 4.1)
- SDA -> 17 SDA1
- SCL -> 16 SCL1
SD Module
- MISO -> 39 MISO1
- MOSI -> 26 MOSI1
- SCK -> 27 SCK1
- CS -> 38 CS1
XBEE (Serial6 port in Teensy 4.1)
- DOUT -> 25 RX6
- DIN -> 24 TX6
Used Packages
Notes
- The board requires an external 9V battery to power sensors and the Teensy. The onboard regulator will step down to 5V and provide stable 5V power.
- The GPS uses an optional "CR1220 coin cell to keep the RTC running and allow warm starts"
- The XBee module (not on AFS PCB) mounts on top of the XBee USB adapter. The USB adapter board has power and serial pass-through to the XBee module
- The board was renamed from "Avionics Test Payload (ATP)" to "Avionics Flight Sensor (AFS)"
v1.1
- Changed Adafruit XBee USB Adapter to Sparkfun XBee Adapter
- XBee receives 5V from regulator, instead of 3.3V from Teensy. During testing we found out that Teensy did not supply enough power for Xbee communication and after sending 1 or 2 packages of data, the Teensy would stop working.
- Regulator is flipped, so we can attach a heat sink
Parts
26| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | Conn_01x01 | MountingHole:MountingHole_3.2mm_M3 | J2, J3, J4, J5 |
| 3 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C6, C7 |
| 2 | 10nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 2 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | 5V, 9V |
| 2 | LOGO | ATP_Teensy_footprints:UCIRP_logo | Ge, Ge |
| 1 | 10uF, 50V | Capacitor_SMD:CP_Elec_5x5.4 | C5 |
| 1 | 290R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 47pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | 90R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | BMP388_3966 | ATP_Teensy_footprints:BMP_board | BMP |
| 1 | Conn_01x04_Male | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | I2C |
| 1 | Conn_01x06_Male | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | SPI |
| 1 | GPS | ATP_Teensy_footprints:GPS_board | GPS |
| 1 | L7805CV | ATP_Teensy_footprints:L7805CV | REG |
| 1 | MPU6050 | ATP_Teensy_footprints:IMU_board | IMU |
| 1 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | 9V PWR |
| 1 | Teensy4.1 | teensy:Teensy41 | TEENSY_4.1 |
| 1 | XBee_SparkfunRegulatedAdapter | ATP_Teensy_footprints:XBee_SparkfunAdapter | XBEE |
Questions
What parts does the ATP Teensy use?
26 parts, built around the TEENSY 4.1 and L7805CV. 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 ATP Teensy KiCad files?
From the UCI-Rocket-Project/AFS-PCB repository on GitHub, at the commit this page was made from: the board is ATP_Teensy.kicad_pcb and its schematic ATP_Teensy.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ATP Teensy design in my own project?
Its repository states no licence, so its author keeps all rights: ask UCI-Rocket-Project before reusing the design.
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