A simple circuit using ESP8266 as mcu to drive an i2c OLED SSD1306 display.

Flyback Converters For For DC/DC Converters SMPS Transformer 4000Vrms Isolation Surface Mount XFMR FLYBACK DC/DC CONV 14UH SMD

This design implements a USB security token powered by an STM32 microcontroller. The device is engineered for compactness and efficient PCB integration while ensuring robust security features. Key elements of the design include: - **Microcontroller Core:** A STM32F103T8U6 serves as the primary processing unit, handling USB communication and security protocols. - **USB Interface:** A USB-A plug provides connectivity to the host. Dedicated net portals ensure proper routing of the VBUS, D+, D–, and ground signals. - **Power Regulation:** A low-dropout regulator supplies a stable 3.3V operating voltage, ensuring low noise and proper current supply to the microcontroller and peripherals. - **Signal Conditioning and EMI Filtering:** An EMI filter is used to maintain signal integrity and reduce interference while preserving the security token’s functionality. - **Synchronous Elements:** A ceramic resonator is incorporated to provide a precise clock source for USB data transfer and microcontroller operations. - **Additional Components:** Surface-mount resistors, capacitors, and LED indicators are deployed to ensure proper conditioning, decoupling, and status feedback. Their compact 0402 packages facilitate a highly integrated design. - **Connectivity and Net Portals:** Custom net portals are used throughout the schematic to streamline connectivity and PCB layout, keeping the design modular and easy to modify. This USB security token is designed with industry-standard components and robust connectivity to ensure secure, reliable operation in portable security applications. #USBToken #STM32 #PCBDesign #SecurityTechnology #PortableSecurity #Microcontrollers #USBInterface #PowerRegulation #EMIProtection #CompactDesign

USB-A pcb plated. A plug built into the pcb board #usb #commonpartslibrary

This project is designed to measure water level of two tanks using ultrasonic sensors interfaced with the ESP32 microcontroller. The design leverages the processing power and wireless connectivity of the ESP32 to accurately monitor water levels and support automated water management processes. Key components include two ultrasonic sensors for precise distance measurement, robust voltage regulation using an LM2596 buck converter, and reliable power management circuits. Its modular design approach facilitates easy expansion and integration with other systems, making it an ideal solution for both DIY enthusiasts and professionals in automated fluid control and IoT applications. Firmware: https://github.com/jharwinbarrozo/ESP32-Dual-Ultrasonic-Water-Level-Monitoring-System #ESP32 #UltrasonicSensor #WaterLevelSensor #LM2596 #VoltageRegulator #ModularDesign #IoT #DIYProjects #ElectronicsDesign #automation

CERAMIC RESONATOR 8.0MHZ 33PF SMD

Generic LED SMD 0603 (1608 Metric), IPC_7351 nominal #ledsmd

Capacitor SMD 0402 (1005 Metric), IPC_7351 nominal #generic-part-template

Linear Voltage Regulators (LDO) 300mA 50dB@(1kHz) 400mV@(200mA) Fixed 3.3V~3.3V Positive 1 6V SOT-23(SOT-23-3) ROHS. Good replacement for MCP1700-3302E

A generic silicon diode for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (mpn, footprint, etc.) as it becomes available. You can change the footprint and 3D model at the top level anytime you want. This is the power of #generics You can choose from available SMD footprint in this list: SMD_0603_1608Metric SMD_0805_2012Metric SMD_1206_3216Metric SMD_2010_5025Metric SMD_2114_3652Metric SMD_3220_8050Metric SMD_MELF SMD_MicroMELF SMD_MiniMELF SMD_PowerDI-123 SMD_SC-80 SMD_SMA SMD_SMB SMD_SMC SMD_SOD-110 SMD_SOD-123 SMD_SOD-123F SMD_SOD-323 SMD_SOD-323F SMD_SOD-523 SMD_SOD-923 SMD_TUMD2 Through-hole footprint is also available: THT_5KP_P7.62mm_Vertical_AnodeUp THT_5KP_P7.62mm_Vertical_KathodeUp THT_5KP_P10.16mm_Horizontal THT_5KP_P12.70mm_Horizontal THT_5KPW_P7.62mm_Vertical_AnodeUp THT_5KPW_P7.62mm_Vertical_KathodeUp THT_5KPW_P12.70mm_Horizontal THT_5W_P5.08mm_Vertical_AnodeUp THT_5W_P5.08mm_Vertical_KathodeUp THT_5W_P10.16mm_Horizontal THT_5W_P12.70mm_Horizontal THT_A-405_P2.54mm_Vertical_AnodeUp THT_A-405_P2.54mm_Vertical_KathodeUp THT_A-405_P5.08mm_Vertical_AnodeUp THT_A-405_P5.08mm_Vertical_KathodeUp THT_A-405_P7.62mm_Horizontal THT_A-405_P10.16mm_Horizontal THT_A-405_P12.70mm_Horizontal THT_DO-15_P2.54mm_Vertical_AnodeUp THT_DO-15_P2.54mm_Vertical_KathodeUp THT_DO-15_P5.08mm_Vertical_AnodeUp THT_DO-15_P5.08mm_Vertical_KathodeUp THT_DO-15_P10.16mm_Horizontal THT_DO-15_P12.70mm_Horizontal THT_DO-15_P15.24mm_Horizontal THT_DO-27_P5.08mm_Vertical_AnodeUp THT_DO-27_P5.08mm_Vertical_KathodeUp THT_DO-27_P12.70mm_Horizontal THT_DO-27_P15.24mm_Horizontal THT_DO-34_SOD68_P7.62mm_Horizontal THT_DO-34_SOD68_P10.16mm_Horizontal THT_DO-34_SOD68_P12.70mm_Horizontal THT_DO-35_SOD27_P2.54mm_Vertical_AnodeUp THT_DO-35_SOD27_P2.54mm_Vertical_KathodeUp THT_DO-35_SOD27_P5.08mm_Vertical_AnodeUp THT_DO-35_SOD27_P5.08mm_Vertical_KathodeUp THT_DO-35_SOD27_P7.62mm_Horizontal THT_DO-35_SOD27_P10.16mm_Horizontal THT_DO-35_SOD27_P12.70mm_Horizontal THT_DO-41_SOD81_P2.54mm_Vertical_AnodeUp THT_DO-41_SOD81_P2.54mm_Vertical_KathodeUp THT_DO-41_SOD81_P5.08mm_Vertical_AnodeUp THT_DO-41_SOD81_P5.08mm_Vertical_KathodeUp THT_DO-41_SOD81_P7.62mm_Horizontal THT_DO-41_SOD81_P10.16mm_Horizontal THT_DO-41_SOD81_P12.70mm_Horizontal THT_DO-201_P5.08mm_Vertical_AnodeUp THT_DO-201_P5.08mm_Vertical_KathodeUp THT_DO-201_P12.70mm_Horizontal THT_DO-201_P15.24mm_Horizontal THT_DO-201AD_P5.08mm_Vertical_AnodeUp THT_DO-201AD_P5.08mm_Vertical_KathodeUp THT_DO-201AD_P12.70mm_Horizontal THT_DO-201AD_P15.24mm_Horizontal THT_DO-201AE_P5.08mm_Vertical_AnodeUp THT_DO-201AE_P5.08mm_Vertical_KathodeUp THT_DO-201AE_P12.70mm_Horizontal THT_DO-201AE_P15.24mm_Horizontal THT_DO-247_Vertical THT_P600_R-6_P7.62mm_Vertical_AnodeUp THT_P600_R-6_P7.62mm_Vertical_KathodeUp THT_P600_R-6_P12.70mm_Horizontal THT_P600_R-6_P20.00mm_Horizontal THT_T-1_P2.54mm_Vertical_AnodeUp THT_T-1_P2.54mm_Vertical_KathodeUp THT_T-1_P5.08mm_Horizontal THT_T-1_P10.16mm_Horizontal THT_T-1_P12.70mm_Horizontal

A generic LED designed for rapid circuit topology development. The footprint adapts automatically based on the selected package, supporting standard SMD sizes such as 0603, 0805, 1206, and other common LED footprints. Save precious design time by seamlessly add more information to this part (forward voltage, footprint, etc.) as it becomes available. Standard LED packages: 0201 0402 0603 0805 1206 1210 1812 2010 2512 #generics #CommonPartsLibrary

ESP32 Battery Management System Controller Board – An innovative solution for smart power control and audio recording integration. This cutting-edge board harnesses the power of the ESP32 microcontroller to deliver precise battery management and seamless integration with an S3 Voice Recorder subsystem. Perfect for advanced IoT applications, the board’s robust design ensures reliable energy optimization, remote monitoring, and real-time performance coupled with high-quality voice recording capabilities. Experience enhanced connectivity, efficient power regulation, and smart audio functionality, all in one compact package that paves the way for next-generation smart devices. #ESP32 #BatteryManagement #VoiceRecorder #IoT #SmartDevices #ControllerBoard

A generic surface mount coin cell battery holder or retainer with a pad on the PCB for the negative terminal. Supports battery diameters of 10mm, 12mm, 16mm, 20mm, 23mm, and 24.5mm. Supports CR1025, CR1216, CR1220, CR1225, CR1616, CR1620, CR1632, CR2016, CR2020, CR2025, CR2032, CR2320, CR2325, CR2330, CR2412, and CR2430 series batteries. #generics #commonPartsLibrary

This is a generic test point with a circular pad, used to either monitor the state of the circuitry or to inject test signals, and debugging during development. The footprint size is selectable. Standard SMD test point size available: 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 2.0mm, 3.00mm, 4.00mm, 5.00mm, 6.00mm, 7.00mm

A generic non-plated mounting hole for your PCB—simply a hole without any copper pads or annular rings. Ideal for mechanical support or enclosure mounting. Available for screw sizes: M1, M2, M2.5, M3, M3.5, M4, M4.5, M5, M6, and M7.

A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary

A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary

A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary

Clone or fork this template if you're planning to get your 2-layer board manufactured in Lion Circuits. It has Lion Circuits [Mii Service](https://www.lioncircuits.com/faq/general/what-is-mii-service) manufacturing constraints already baked as global rules. ( #project-template #template #manufacturer-design-rules )

This part is Not Recommended for New Design(NRND) USB Type C, 3 A, Right Angle, Surface Mount (SMT), Power-Only USB Receptacle -40℃~+85℃ 1 20V 3,000 Cycles 5A 6.8mm 6P Surface Mount, Right Angle Type-C USB 2.0 SMD USB Connectors ROHS

ESP32 DevKit V1 USB Type-C Migration with CP2102N, ESD Protection, and Auto-Program Circuitry

Counter IC Counter, Decade 1 Element 10 Bit Positive Edge 16-PDIP

Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)

10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan

General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant

Through Hole straight pin header, 01x02, 2.54mm pitch, single row #pinheader #tht #connector

PTS 810 Series Microminiature SMT Top Actuated Features/Benefits - 4.2 x 3.2 mm footprint - 2.5 mm thickness - High number of cycles - Color coded actuators Typical Applications - Control panels - Nomad devices - Remote controls - Keyless entry system 3.2mm 2.5mm Round Button 50mA Brick nogging 4.2mm SPST 16V SMD Tactile Switch SPST-NO Top Actuated Surface Mount.

9V Battery Connector, Snap 9V 1 Cell PC Pin (through hole THT) BATTERY CONTACT 9V 9V battery clip

ARM® Cortex®-M4 STM32F4 Microcontroller IC 32-Bit 168MHz 1MB (1M x 8) FLASH 64-LQFP (10x10) #microcontrollers #stm32 #commonpartslibrary

AvocAudio is a compact tinyML community board designed for extensive audio data collection for various tinyML applications. It leverages the Raspberry Pi RP2040 and integrates a LoRa-E5 LoRaWAN Transceiver Module for connectivity. Equipped with an SD card slot for local data storage, the board ensures efficient data collection. The board operates on solar power or a lithium-ion battery, ensuring flexible and efficient energy use. #audioDevices #raspberryPi #rp2040 #lorawan #iot #solar