2 layers60.8 × 36 mm
SecCentralUnit
albertdolata/Sensitive-Parameter-Recorder
This repository is intended for an academic project.
22 parts2
4 layers47.6 × 42.4 mm
Heart
lime7git/heart2A small gift. Heart shape PCB with STM32L0 microcontroller, gpio expander, accelerometer and some fancy leds.
- Size
- 47.6 × 42.4 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 68
- Nets
- 68
- Pads
- 194
- Tracks, vias
- 395, 72
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 18 Dec 2021
- Updated
- 25 Jan 2023
Overview
Heart is an open-source printed circuit board by lime7git, from the lime7git/heart repository on GitHub. It is a 4-layer board of 47.6 × 42.4 mm with 68 parts on 68 nets, routed with 395 tracks and 72 vias.
It is built around the LIS3DH and CR2450. Its parts include 22 resistors, 16 diodes, 12 capacitors, 5 connectors and 4 ICs. It belongs with the sensors and measurement boards and the STM32 boards of this library.
Main components
2README
README.mdheart
A small gift. Heart shape PCB with STM32L0 microcontroller, TCA6416A I2C GPIO expander, LIS3DH accelerometer, BS812A touch sensor and some fancy leds.
It can be used as a keychain. It is operates on a CR2450 coin cell battery. There is a few led patterns which can be start by press a touch button or shake. When the device does not recognize any event in 10 seconds it will enter the low power mode and can be woke up only by touching button. In this mode the power consumption is about 25 uA.
YouTube video short presentation :
Parts
68| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | LED | LED_SMD:LED_0603_1608Metric | D0, D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15 |
| 16 | R | Resistor_SMD:R_0402_1005Metric | R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15 |
| 6 | 100nF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C4, C6, C9, C11 |
| 6 | 10k | Resistor_SMD:R_0402_1005Metric | R21, R22, R23, R24, R25, R26 |
| 3 | 10nF | Capacitor_SMD:C_0402_1005Metric | C3, C5, C7 |
| 2 | SolderJumper_3_Open | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels | PA1, PA2 |
| 1 | 10uF | Capacitor_SMD:C_0402_1005Metric | C8 |
| 1 | 25pF | Capacitor_SMD:C_0402_1005Metric | C10 |
| 1 | 3V0 | TestPoint:TestPoint_Pad_1.0x1.0mm | J1 |
| 1 | 47uF | Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C0 |
| 1 | AMP | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2 |
| 1 | CLK | TestPoint:TestPoint_Pad_1.0x1.0mm | J3 |
| 1 | CR2450 | Battery:BatteryHolder_Keystone_3008_1x2450 | CR2450 |
| 1 | DIO | TestPoint:TestPoint_Pad_1.0x1.0mm | J2 |
| 1 | GND | TestPoint:TestPoint_Pad_1.0x1.0mm | J4 |
| 1 | Holtek-Semicon-BS812A-1 | Package_TO_SOT_SMD:SOT-23-6 | U4 |
| 1 | Jumper | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | RST |
| 1 | LIS3DH | Package_LGA:LGA-16_3x3mm_P0.5mm_LayoutBorder3x5y | U3 |
| 1 | PWR | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | STM32L031F6Px | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | SW_SPDT | Button_Switch_SMD:SW_SPDT_PCM12 | SW1 |
| 1 | TCA6416APWR | Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm | U2 |
| 1 | TOUCH_KEY | TestPoint:TestPoint_Pad_D4.0mm | J5 |
The 66 most common of 68 parts.
Questions
How big is the Heart PCB?
It measures 47.6 × 42.4 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Heart use?
68 parts, built around the LIS3DH and CR2450. 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 Heart KiCad files?
From the lime7git/heart repository on GitHub, at the commit this page was made from: the board is heart-hardware/pcb/heart/heart.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Heart design in my own project?
Its repository states no licence, so its author keeps all rights: ask lime7git before reusing the design.
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