yesitha/Smart-VentilatorThis project aims to develop a low cost smart ventilator system that requires minimum professional interaction to operate using Atmega32 Microcontroller
Smart Ventilator PCB is an open-source printed circuit board by yesitha, from the yesitha/Smart-Ventilator repository on GitHub. It is a 2-layer board of 240.7 × 179.5 mm with 69 parts on 98 nets, routed with 1,142 tracks and 148 vias.
It is built around the ATMEGA32-16AU, MPX4250AP and L293D, with the MAX30102, MAX30205MTA+ and PCF8574AP among its other parts. Its parts include 13 ICs, 9 capacitors, 8 diodes, 8 connectors and 5 resistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
This project aims to develop a low cost smart ventilator system that requires minimum professional interaction to operate using Atmega32 Microcontroller
Objectives
System Block Diagram
Schematic of the product
3D Design of the System
PCB & 3D View of the Main Board
PCB & 3D View of the Heart Rate & SPO2
PCB & 3D View of Body Temperature Sensor
PCB & 3D View of Power Supply
Software Used
Contributors
| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | 1k1, 1k2, 1k3, 1k4, 1k5, 1k6, 1k7, 1k8 |
| 5 | 470uF | Capacitor_SMD:C_Elec_3x5.4 | C4, C6, C7, C8, C9 |
| 4 | CAP | Capacitor_SMD:CP_Elec_3x5.3 | 0.1uF1, 4.7uF1, 22pF1, 22pF2 |
| 4 | DIODE | Diode_SMD:D_0201_0603Metric | D1, D2, D3, D4 |
| 3 | 4.7k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3 |
| 3 | TIP41 | Package_TO_SOT_THT:TO-220-3_Vertical | Q1, Q2, Q3 |
| 2 | 0.1uF | Capacitor_SMD:CP_Elec_3x5.3 | C1, C3 |
| 2 | 1N4004 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D7, D8 |
| 2 | DIPxx-1Axx-11x | Relay_THT:Relay_StandexMeder_DIP_LowProfile | K1, K2 |
| 2 | L7805 | footprint:78XXL | IC1, IC2 |
| 2 | MPX4250AP | footprint:MPX4250AP | U5, U6 |
| 2 | Screw_Terminal_01x05 | TerminalBlock_4Ucon:TerminalBlock_4Ucon_1x05_P3.50mm_Horizontal | J6, J7 |
| 1 | 1.6k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
| 1 | 10uF | Capacitor_SMD:CP_Elec_3x5.3 | C2 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | 2200uF | Capacitor_SMD:C_Elec_5x5.4 | C5 |
| 1 | 86AB2-102 | footprint:KEYPAD_86AB2-102 | U2 |
| 1 | ABS4 | Diode_SMD:Diode_Bridge_Diotec_ABS | D5 |
| 1 | ATmega32-16A | Package_QFP:TQFP-44_10x10mm_P0.8mm | U1 |
| 1 | BPM | Potentiometer_SMD:Potentiometer_Bourns_3269W_Vertical | RV2 |
| 1 | Breath Length | Potentiometer_SMD:Potentiometer_Bourns_3269W_Vertical | RV3 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_15x7.5RM7.6 | BZ1 |
| 1 | Conn_01x01_Female | Connector_PinHeader_1.00mm:PinHeader_1x01_P1.00mm_Vertical | J8 |
| 1 | Conn_01x04_Female | Connector_PinHeader_1.00mm:PinHeader_1x04_P1.00mm_Vertical | J4 |
| 1 | Conn_01x06_Female | Connector_PinHeader_1.00mm:PinHeader_1x06_P1.00mm_Vertical | J5 |
| 1 | Conn_01x07_Female | Connector_PinHeader_1.00mm:PinHeader_1x07_P1.00mm_Vertical | J1 |
| 1 | Crystal | Crystal:Crystal_AT310_D3.0mm_L10.0mm_Horizontal | Y1 |
| 1 | L293D | Package_DIP:DIP-16_W7.62mm | U4 |
| 1 | LD1086DT18TR | Package_TO_SOT_SMD:TO-252-2 | U9 |
| 1 | LED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D6 |
| 1 | LM16255K | Display:LM16255 | LCD1 |
| 1 | MAX30102 | OptoDevice:Maxim_OLGA-14_3.3x5.6mm_P0.8mm | U8 |
| 1 | MAX30205MTA+ | footprint:SON65P300X300X80-9N | U7 |
| 1 | O2 Auto | Button_Switch_SMD:SW_Push_1P1T_NO_6x6mm_H9.5mm | SW1 |
| 1 | OKI-78SR-3.3_1.5-W36-C | Converter_DCDC:Converter_DCDC_Murata_OKI-78SR_Vertical | U10 |
| 1 | Oxcegen % | Potentiometer_SMD:Potentiometer_Bourns_3269W_Vertical | RV1 |
| 1 | PCF8574A | footprint:DIL16 | U3 |
| 1 | Power | Button_Switch_SMD:SW_Push_1P1T_NO_6x6mm_H9.5mm | SW2 |
| 1 | R-7812-0.5 | Converter_DCDC:Converter_DCDC_RECOM_R-78E-0.5_THT | U11 |
| 1 | Screw_Terminal_01x03 | TerminalBlock_4Ucon:TerminalBlock_4Ucon_1x03_P3.50mm_Horizontal | J3 |
| 1 | Screw_Terminal_01x12 | TerminalBlock_4Ucon:TerminalBlock_4Ucon_1x12_P3.50mm_Horizontal | J2 |
| 1 | Transformer_1P_1S | Transformer_THT:Transformer_Toroid_Horizontal_D9.0mm_Amidon-T30 | T1 |
It measures 240.7 × 179.5 mm and has 2 copper layers, 1.6 mm thick.
69 parts, built around the ATMEGA32-16AU, MPX4250AP, L293D and MAX30102. 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.
From the yesitha/Smart-Ventilator repository on GitHub, at the commit this page was made from: the board is KIcad/Smart Ventilator PCB/Smart Ventilator PCB.kicad_pcb and its schematic KIcad/Body Temperature.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask yesitha before reusing the design.
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