The Pico Macro Keyboard is a compact and powerful macro pad built using the latest Raspberry Pi Pico 2. Inspired by the Figma Creator Micro, this keyboard is designed for customizable control and enhanced productivity. It features mechanical switches with per-key RGB lighting, along with two rotary encoders for added functionality. With a modular 4-layer PCB and fully customizable keymaps, it seamlessly integrates with any software, making it perfect for designers, gamers, and power users alike.

This circuit is an ultrasonic distance meter based on an ATTiny2313 microcontroller. It uses an HC-SR04 ultrasonic sensor to measure distance and displays the results on an OLED display. The power supply is constructed using a Boost converter (TPS613222A) and a 2-cell AA battery. Additionally, it also includes ISP for programming, RESET and START switches, and LED indicators. #project #Template #projectTemplate #ultrasonic #OLED #arduino #attiny2313 #TPS613222A #ISP #referenceDesign #simple-embedded #microchip #template #reference-design .

Handheld Xbox 360 system with integrated controller electronics, battery-managed USB-C PD power, and a separate dock that automatically switches display, Kinect, and DVD drive paths through a mezzanine docking interface.

Architectural Lavender Translation Collar – ESP32‑S3 Wi‑Fi + LoRa, USB‑C, Li‑ion, low‑power design Overview Experience a cutting-edge IoT solution with this low‑power board built around the ESP32‑S3‑MINI‑1‑N8. Designed for seamless Wi‑Fi (2.4 GHz), BLE, and LoRa (868 MHz) connectivity, this board integrates ENS161 and ENS210 sensors over I2C alongside an RFM95W‑868 LoRa radio on SPI. It is powered via a 3.7 V Li‑ion cell with USB‑C charging up to 500 mA, complete with full battery protection, a robust 3.3 V rail tailored for Wi‑Fi burst currents, and per‑peripheral power gating to enhance energy efficiency. Core Features • MCU: ESP32‑S3‑MINI‑1‑N8 equipped with an onboard PCB antenna for 2.4 GHz Wi‑Fi/BLE, ensuring optimal wireless performance. • Sensors: Integrated ENS161 and ENS210 sensors utilize a shared I2C bus with controllable 4.7 kΩ pull‑ups for streamlined communication. • LoRa Radio: The RFM95W‑868 module, connected via SPI, enables long‑range communication at 868 MHz. Power & USB‑C Connectivity • Battery: A reliable 3.7 V 1200 mAh Li‑ion battery connected via a right‑angle JST‑PH 2‑pin connector features built‑in battery protection. • Charging: The USB‑C receptacle, with CC resistors and TVS protection on D+/D− along with series resistors, supports fast, safe charging with a current limit of 500 mA. • Regulation: A dedicated 3.3 V regulator capable of handling Wi‑Fi burst currents coupled with bulk and high‑frequency decoupling ensures stable operation, supported by status LEDs indicating power and charge states. Low‑Power Control • Peripheral Management: Load switches allow selective power‑gating of the ENS161, ENS210, and RFM95W modules, controlled directly by ESP32‑S3 GPIOs. • Energy Efficiency: Controllable I2C pull‑ups minimize idle current, vital for prolonged battery life in IoT applications. RF and Antenna Integration • 2.4 GHz: Utilizes the integrated PCB antenna on the ESP32‑S3 with proper ground/metal keep‑out zones for optimal signal integrity. • 868 MHz: Features a controlled‑impedance feed from the RFM95W to a PI matching network (C‑L‑C pads) with flexible antenna options—selectable via SMA connector, chip antenna, or PCB trace—and includes RF ESD protection. Connectivity & Debug Features • USB‑C Interface: Provides secure data connectivity with integrated safeguards and proper terminations. • Debugging: A comprehensive programming/debug header exposes EN, BOOT, and UART lines, with test points on key rails and buses (3V3, VBAT, SCK, MOSI, MISO, SDA, SCL, RESET/EN, GND) to simplify development and troubleshooting. Design Verification • Rigorous ERC/DRC and decoupling checks ensure adherence to component ratings and optimal signal routing. • Maintain RF keep‑outs and impedance‑controlled traces for both 2.4 GHz and 868 MHz paths, securing reliable performance even during high‑intensity operations. #IoT #ESP32S3 #LoRa #LowPowerDesign #USB-C #WirelessConnectivity #BatteryPowered #RFDesign

MCU-Controlled 7-Port USB 3.0/2.0 Hub with Dual Extra USB 3.0 Downstream Ports, Per-Port 900mA Power Switches, High-Speed TVS/CMC Protection, Controlled Line Impedance (85Ω SS / 90Ω USB2), and ≥6.3A Total Current Output

This is an office productivity hub featuring an STM32F103C8T6 MCU, GC9A01A display driver, voltage regulator, capacitors, resistors, switches, USB-C, and SWD header. #referenceDesign #edge-computing #edgeComputing #stm #template #iot #stm32f1 #reference-design

The Pico Macro Keyboard is a compact and powerful macro pad built using the latest Raspberry Pi Pico 2. Inspired by the Figma Creator Micro, this keyboard is designed for customizable control and enhanced productivity. It features mechanical switches with per-key RGB lighting, along with two rotary encoders for added functionality. With a modular 4-layer PCB and fully customizable keymaps, it seamlessly integrates with any software, making it perfect for designers, gamers, and power users alike.

The Pico Macro Keyboard is a compact and powerful macro pad built using the latest Raspberry Pi Pico 2. Inspired by the Figma Creator Micro, this keyboard is designed for customizable control and enhanced productivity. It features mechanical switches with per-key RGB lighting, along with two rotary encoders for added functionality. With a modular 4-layer PCB and fully customizable keymaps, it seamlessly integrates with any software, making it perfect for designers, gamers, and power users alike.

Elementos necesarios en Proteus 8 Busca estos componentes en la biblioteca (modo "Pick Devices"): Conector J1772 – usa un conector genérico de 4 pines (como HEADER 4 o un DB9 si necesitas algo similar). Resistencias: R1: 150 Ω R2: 330 Ω R3: 150 Ω R4: 2.7 Ω Interruptor SPST o jumper simulando "Punto A", "Punto B" y "GND". Fuente de alimentación de 5V para simular BAT1. Ground (GND) para las conexiones a tierra. Batería (Battery) de 5V (puede ser una batería o una carga equivalente en Proteus). Indicador LED (opcional) si quieres ver visualmente la salida de carga o conexión. 🛠️ Pasos para construir el circuito Sección del conector (lado izquierdo) Coloca un conector de 4 pines y nómbralo "J1772". Conecta el primer pin a una fuente de 5V opcional (simulando señal de control). Añade las resistencias R1 (150Ω) y R2 (330Ω) en serie, con un nodo medio hacia “Punto A”. Conecta el otro lado de R1 a "Punto B". Conecta el otro extremo de R2 a tierra. Agrega interruptores SPST para "Punto A", "Punto B" y "GND" para simular las uniones cuando se conectan al cargador. Sección de carga (lado derecho) Coloca las resistencias R3 (150Ω) y R4 (2.7Ω) tal como en la imagen, entre el conector y la batería. Coloca una batería (BAT1) de 5V, y conecta el negativo a tierra. Asegúrate de cerrar correctamente los interruptores (simulando conexión). 🔄 Simulación Usa "Interactive Simulation" en Proteus. Agrega etiquetas como "PUNTO A", "PUNTO B", etc., si deseas facilitar el seguimiento. Observa cómo el voltaje pasa a través de las resistencias y carga la batería. Puedes usar voltímetros o osciloscopios virtuales para observar los cambios de voltaje y corriente. ✅ Consejos finales Si no encuentras la resistencia exacta de 2.7Ω, puedes colocar una personalizada. Puedes usar Virtual Terminal si quieres simular señales de comunicación en el conector. El conmutador central (como se muestra en la línea de puntos) puede implementarse con switches DPDT o nodos que conectes manualmente en la simulación.

This is a schematic of an IR (infrared) remote control system. It's built around a Microchip ATTINY2313 microcontroller (U1) and boasts five push-button switches, an indicator RED LED and an electret buzzer for user interaction. An ISP header provides programming capabilities. The project is battery-powered and implements boost converter TPS613222AD (IC1) for stable power supply. #project #Template #projectTemplate #lock #keypad #attiny2313 #TPS613222A #ISP #buzzer #reusable #module #simple-embedded #microchip #arduino #sublayout

Raspberrypi Pico-based sampler, sequencer + drum machine w/ an embedded speaker, Adafruit I2S amplifier and momentary step switches, evoking the tr808 synthesizer ⁠

The Pico Macro Keyboard is a compact and powerful macro pad built using the latest Raspberry Pi Pico 2. Inspired by the Figma Creator Micro, this keyboard is designed for customizable control and enhanced productivity. It features mechanical switches with per-key RGB lighting, along with two rotary encoders for added functionality. With a modular 4-layer PCB and fully customizable keymaps, it seamlessly integrates with any software, making it perfect for designers, gamers, and power users alike.

This circuit is an ultrasonic distance meter based on an ATTiny2313 microcontroller. It uses an HC-SR04 ultrasonic sensor to measure distance and displays the results on an OLED display. The power supply is constructed using a Boost converter (TPS613222A) and a 2-cell AA battery. Additionally, it also includes ISP for programming, RESET and START switches, and LED indicators. #project #Template #projectTemplate #ultrasonic #OLED #arduino #attiny2313 #TPS613222A #ISP #referenceDesign #simple-embedded #microchip #template #reference-design

This is a schematic of an IR (infrared) remote control system. It's built around a Microchip ATTINY2313 microcontroller (U1) and boasts five push-button switches, an indicator RED LED and an electret buzzer for user interaction. An ISP header provides programming capabilities. The project is battery-powered and implements boost converter TPS613222AD (IC1) for stable power supply. #project #Template #projectTemplate #lock #keypad #attiny2313 #TPS613222A #ISP #buzzer #reusable #module #simple-embedded #microchip #arduino #sublayout

Personalized keyboard controller based on the ATMEGA32U4 and Arduino-compatible. Designed with USB-C connection and features a 2-Axis Switch Thumb Joystick by @sparkfun and tactile switches.

This is an office productivity hub featuring an STM32F103C8T6 MCU, GC9A01A display driver, voltage regulator, capacitors, resistors, switches, USB-C, and SWD header. #referenceDesign #edge-computing #edgeComputing #stm #template #iot #stm32f1 #reference-design

This is a schematic of an IR (infrared) remote control system. It's built around a Microchip ATTINY2313 microcontroller (U1) and boasts five push-button switches, an indicator RED LED and an electret buzzer for user interaction. An ISP header provides programming capabilities. The project is battery-powered and implements boost converter TPS613222AD (IC1) for stable power supply. #project #Template #projectTemplate #lock #keypad #attiny2313 #TPS613222A #ISP #buzzer #reusable #module #simple-embedded #microchip #arduino #sublayout

The NTTFS4C06N, manufactured by ON Semiconductor, is a high-performance, single N-Channel Power MOSFET designed for applications requiring efficient switching and low conduction losses. This MOSFET is rated for a maximum drain-to-source voltage (VDSS) of 30 V and can handle continuous drain currents up to 67 A. Key features include a low RDS(on) of 4.2 mΩ at VGS = 10 V and 6.1 mΩ at VGS = 4.5 V, which minimizes conduction losses, and optimized gate charge characteristics that reduce switching losses. Additionally, the component boasts low capacitance to minimize driver losses, making it ideal for use in DC-DC converters, power load switches, and notebook battery management systems. The device is RoHS compliant, Pb-free, and halogen-free, ensuring environmentally friendly compliance. The NTTFS4C06N is available in a compact WDFN8 package, making it suitable for high-density circuit designs.

Personalized keyboard controller based on the ATMEGA32U4 and Arduino-compatible. Designed with USB-C connection and features a 2-Axis Switch Thumb Joystick by @sparkfun and tactile switches. #project #Arduino #ATMEGA32U4 #type-c

This is a BLE to WiFi gateway Reference Design. It employs an ESP32 microcontroller and an STM32WB5MMGH6TR for BLE functionality. The design includes connectors, multiple capacitors, resistors, switches, and LEDs. USB Type-C is used for power and data. This could be used for IoT purposes in home automation or wireless sensor data transmission. #referenceDesign #edge-computing #espressif #stm #template #ble #reference-design

This is a LoRa based gas leakage detector design featuring a BME680 gas sensor by Bosch Sensortec. It includes a Seeed LoRa module for RF communication and uses an MCU. The power is driven by two non-rechargeable AA batteries with voltage regulation by TPS613221ADBVR IC. The project also incorporates user interaction components such as indicators (LED) and switches. #LoRa #MCU #ReferenceDesign #project #referenceDesign #simple-embedded #seeed #seeed-studio #template #reference-design

This is a BLE to WiFi gateway Reference Design. It employs an ESP32 microcontroller and an STM32WB5MMGH6TR for BLE functionality. The design includes connectors, multiple capacitors, resistors, switches, and LEDs. USB Type-C is used for power and data. This could be used for IoT purposes in home automation or wireless sensor data transmission. #referenceDesign #edge-computing #espressif #stm #template #ble #reference-design

This is a LoRa based gas leakage detector design featuring a BME680 gas sensor by Bosch Sensortec. It includes a Seeed LoRa module for RF communication and uses an MCU. The power is driven by two non-rechargeable AA batteries with voltage regulation by TPS613221ADBVR IC. The project also incorporates user interaction components such as indicators (LED) and switches. #LoRa #MCU #ReferenceDesign #project #referenceDesign #simple-embedded #seeed #seeed-studio #template #reference-design #polygon

The Pico Macro Keyboard is a compact and powerful macro pad built using the latest Raspberry Pi Pico 2. Inspired by the Figma Creator Micro, this keyboard is designed for customizable control and enhanced productivity. It features mechanical switches with per-key RGB lighting, along with two rotary encoders for added functionality. With a modular 4-layer PCB and fully customizable keymaps, it seamlessly integrates with any software, making it perfect for designers, gamers, and power users alike.

The NTTFS4C05N is an advanced N-Channel MOSFET designed by ON Semiconductor, optimized for high-efficiency power management applications. This MOSFET features a low RDS(on) to minimize conduction losses, low capacitance to reduce driver losses, and an optimized gate charge for minimal switching losses. It operates at a maximum drain-to-source voltage (VDSS) of 30V and can handle continuous drain currents up to 75A. The device is available in a compact WDFN8 package and is suitable for use in DC-DC converters, power load switches, and notebook battery management systems. The component is Pb-Free, Halogen Free/BFR Free, and RoHS compliant, ensuring it meets global environmental standards. Additionally, the NTTFS4C05N offers robust performance with a maximum power dissipation of 33W at a case temperature of 25°C, and it can withstand pulsed drain currents up to 174A. It also features a gate threshold voltage range of 1.3V to 2.2V and boasts fast switching characteristics with turn-on and turn-off delay times as low as 2ns and 8ns, respectively.