4 layers278 × 93.5 mm
4 layers54.4 × 74.8 mm
Corneo project
samodostal/nrf52840-devkit- Size
- 54.4 × 74.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 69
- Nets
- 90
- Pads
- 306
- Tracks, vias
- 476, 84
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 13 Nov 2024
- Updated
- 2 Dec 2024
Overview
Corneo project is an open-source printed circuit board by samodostal, from the samodostal/nrf52840-devkit repository on GitHub. It is a 4-layer board of 54.4 × 74.8 mm with 69 parts on 90 nets, routed with 476 tracks and 84 vias.
It is built around the BQ24075RGT and XC6220B331MR. Its parts include 25 capacitors, 10 resistors, 7 diodes, 6 connectors and 6 switches. It belongs with the nRF52 and nRF5x boards of this library.
Main components
2
BQ24075RGT
QFN-16-EP(3x3)-40℃~+125℃ 1.5A 4.2V 4.35V~6.4V 6.5uA Charging IC Lithium Battery Not supported Support QFN-16-EP(3x3) Battery Management ROHSTexas InstrumentsBattery Management
XC6220B331MR
SOT-23-5-40℃~+85℃@(Ta) 1 25uA 3.3V 400mV@(800mA) 5.5V 50dB@(10kHz) 900mA Fixed Over Current Protection、Over Temperature Protection Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
Parts
69| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 4.7uF | Capacitor_SMD:C_0805_2012Metric | C1, C6, C7, C8, C17, C21, C25 |
| 4 | 100nF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C4, C13 |
| 4 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2, R4, R7 |
| 4 | 12pF | Capacitor_SMD:C_0603_1608Metric | C14, C15, C22, C23 |
| 4 | Diode | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D2, D3, D4, D5 |
| 4 | Keyswitch | Button_Switch_THT:SW_PUSH_6mm | SW1, SW2, SW3, SW4 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | 1uF | Capacitor_SMD:C_0603_1608Metric | C5, C11, C16 |
| 2 | 1.5k | Resistor_SMD:R_0603_1608Metric | R8, R10 |
| 2 | 10uH | Inductor_SMD:L_0603_1608Metric | L2, L3 |
| 2 | 1pF | Capacitor_SMD:C_0402_1005Metric | C19, C20 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R5, R6 |
| 1 | 1.5pF | Capacitor_SMD:C_0402_1005Metric | C18 |
| 1 | 100pF | Capacitor_SMD:C_0603_1608Metric | C12 |
| 1 | 10M | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C24 |
| 1 | 15nH | Inductor_SMD:L_01005_0402Metric | L1 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric | C9 |
| 1 | 2k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 3.9nH | Inductor_SMD:L_01005_0402Metric | L4 |
| 1 | 32.768kHz | Crystal:Crystal_SMD_2012-2Pin_2.0x1.2mm | Y1 |
| 1 | 32MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y3 |
| 1 | 47nF | Capacitor_SMD:C_0603_1608Metric | C10 |
| 1 | Analog input header | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | BQ24075RGT | Package_DFN_QFN:VQFN-16-1EP_3x3mm_P0.5mm_EP1.6x1.6mm | U1 |
| 1 | Battery header | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | Blue | LED_SMD:LED_0402_1005Metric | D6 |
| 1 | Bluetooth antenna | RF_Antenna:Texas_SWRA117D_2.4GHz_Left | AE2 |
| 1 | Charge Boost | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | Debug header | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J7 |
| 1 | GPIO header 1 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J2 |
| 1 | GPIO header 2 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J4 |
| 1 | Green | LED_SMD:LED_0402_1005Metric | D7 |
| 1 | Orange | LED_SMD:LED_0402_1005Metric | D1 |
| 1 | Power switch | Button_Switch_SMD:SW_SPDT_PCM12 | SW6 |
| 1 | Reset button | Button_Switch_THT:SW_PUSH_6mm | SW5 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J6 |
| 1 | XC6220B331MR | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | nRF52840 | Library:Nordic_AQFN-73-1EP_7x7mm_P0.5mm | U2 |
Questions
How big is the Corneo project PCB?
It measures 54.4 × 74.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Corneo project use?
69 parts, built around the BQ24075RGT and XC6220B331MR. 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 Corneo project KiCad files?
From the samodostal/nrf52840-devkit repository on GitHub, at the commit this page was made from: the board is corneo_project.kicad_pcb and its schematic corneo_project.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Corneo project design in my own project?
Its repository states no licence, so its author keeps all rights: ask samodostal before reusing the design.
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