2 layers44.7 × 63.5 mm
2 layers52.5 × 62.1 mm
Verification unit
vasavbn2/ECE445This is our repo for our ECE445 Key FOB project
- Size
- 52.5 × 62.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 48
- Pads
- 143
- Tracks, vias
- 248, 40
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 17 Sep 2024
- Updated
- 2 Dec 2024
Overview
Verification unit is an open-source printed circuit board by vasavbn2, from the vasavbn2/ECE445 repository on GitHub. It is a 2-layer board of 52.5 × 62.1 mm with 36 parts on 48 nets, routed with 248 tracks and 40 vias.
It is built around the CC1101RGPR, L293D and LM3940IT-3.3. Its parts include 12 capacitors, 7 diodes, 4 resistors, 4 ICs and 4 connectors. It belongs with the STM32 boards of this library.
Main components
3
CC1101RGPR
QFN-20-EP(4x4)-112dBm -40℃~+85℃ 1.8V~3.6V 12dBm 15.7mA 300MHz~348MHz、387MHz~464MHz、779MHz~928MHz 315MHz、433MHz、868MHz、915MHz 34.2mA 500Kbps ISM Power-on reset function、Supports RSSI function、CRC check function、Input sync word detection function SPI transceiver QFN-20-EP(4x4) RF Transceiver ICs ROHSTexas InstrumentsRF Transceiver ICs
L293D
DIP-16-40℃~+150℃ 1.2A 2 4.5V~36V 4mA 600mA DIP-16 Brushed DC Motor Drivers ROHSSTMicroelectronicsStepper Motor Driver
LM3940IT-3.3
TO-220-40℃~+125℃ 1 10mA 150uVrms 1A 200mV@(100mA) 3.3V 7.5V Fixed Over Temperature Protection、Short Circuit Protection Positive TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsLinear Voltage Regulators (LDO)
README
README.mdECE445
This is our repo for our ECE445 Key FOB project!
Week of 9/23/24
Discussed our proposal in meeting with our TA. Next steps: Perform tolerance analysis and begin work on design document.
Week of 9/30/24
Discussed the design document and design review process with our TA. Working on the proposal regrade, including tolerance analysis and ethics. Next steps: Complete schematics in KiCad so we have complete schematics and BOMs for our 2 boards. Finish composing the design document.
Week of 10/7/24
Finalized schematics and started layouts
Week of 10/14/24
Completed fob layout BOM for fob: https://www.digikey.com/short/3907nrjb
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C4, C5 |
| 4 | 1N4001 | Diode_SMD:D_0805_2012Metric | D11, D12, D13, D14 |
| 3 | 33nH | Inductor_SMD:L_0805_2012Metric | L1, L2, L4 |
| 3 | 6.8pF | Capacitor_SMD:C_0805_2012Metric | C7, C9, C11 |
| 3 | 68 | Resistor_SMD:R_0805_2012Metric | R2, R3, R6 |
| 2 | 220pF | Capacitor_SMD:C_0805_2012Metric | C8, C12 |
| 2 | 27pF | Capacitor_SMD:C_0805_2012Metric | C3, C6 |
| 1 | 12pF | Capacitor_SMD:C_0805_2012Metric | C10 |
| 1 | 18nH | Inductor_SMD:L_0805_2012Metric | L3 |
| 1 | 56k | Capacitor_SMD:C_0805_2012Metric | R1 |
| 1 | CC1101RGPR | newparts:RGP20_2P4X2P4 | U3 |
| 1 | Conn_01x01_Socket | Connector_PinSocket_2.54mm:PinSocket_1x01_P2.54mm_Vertical | J4 |
| 1 | Conn_01x02_Socket | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J3 |
| 1 | Conn_02x04_Counter_Clockwise | Connector_PinSocket_2.54mm:PinSocket_2x04_P2.54mm_Vertical | J1 |
| 1 | Conn_Coaxial | Connector_Coaxial:SMA_Amphenol_901-143_Horizontal | J2 |
| 1 | L293D | Package_DIP:DIP-16_W7.62mm | U2 |
| 1 | LED_Receive | LED_SMD:LED_0805_2012Metric | D2 |
| 1 | LED_Transmit | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | LED_Valid | LED_SMD:LED_0805_2012Metric | D3 |
| 1 | LM3940IT-3.3 | newparts:LM3940IT-3.3 | U4 |
| 1 | NX3225GA-26.000MHZ-EXS00A-CG01972 | newparts:NX3225GA16000MSTDCRG1 | Y1 |
| 1 | STM32C011F4Px | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
Questions
How big is the Verification unit PCB?
It measures 52.5 × 62.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Verification unit use?
36 parts, built around the CC1101RGPR, L293D and LM3940IT-3.3. 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 Verification unit KiCad files?
From the vasavbn2/ECE445 repository on GitHub, at the commit this page was made from: the board is Verification_Unit/verification_unit.kicad_pcb and its schematic Fob_Design_Files/Fob_Design_Files.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Verification unit design in my own project?
Its repository states no licence, so its author keeps all rights: ask vasavbn2 before reusing the design.
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