Important Note: You must connect your own SPI/ICSP programming header if you want to burn the Arduino bootloader to the MCU. SMD Manufacturing: Need a hotplate and solderpaste Good to haves: - Oscillator Decoupling Caps Expose UART via connector Programming Button Onboard LED Reset Button You don't have to populate everything! Only these are mandatory: Reset Button Find the reference schematic here: https://www.arduino.cc/en/uploads/Main/ArduinoNano30Schematic.pdf

Important Note: You must connect your own SPI/ICSP programming header if you want to burn the Arduino bootloader to the MCU. In this version, you must also provide your own UART interface. SMD Manufacturing: Need a hotplate and solderpaste Good to haves: - Oscillator Decoupling Caps Expose UART via connector Programming Button Onboard LED Reset Button You don't have to populate everything! Only these are mandatory: Reset Button Find the reference schematic here: https://www.arduino.cc/en/uploads/Main/ArduinoNano30Schematic.pdf

To optimize your 4-layer board manufacturing process with Seeed Studio Fusion, utilize this comprehensive template. It incorporates a majority of the essential manufacturing constraints as global rules, ensuring a smoother and more efficient production workflow. #project-template #template #manufacturer-design-rules This project is a vessel monitoring system built using Seeed Studio Xiao Sense, Xiao Expansion Board with OLED, a UART WiFi module, a normally open float switch, and a UART SIM800L cellular module. The system displays a 30-second countdown on the OLED screen, calibrates the IMU sensor, converts to Euler angles, and stores these values for comparison with future readings. It also sets up the WiFi module as an access point to configure the vessel's name, contact numbers, and angle thresholds for list and trim notifications. Reports are sent at specified times via the cellular module.

This is a Pet Tracker module based on STM32L4. Tracker connects with network by SIM800L module connected to the STM. Also MCU connected to the GPS by uart and send data to server #STM32 #GPS #G4 #G3 #LTE #IoT #Tracker #reusable #module #edge-computing #edgeComputing #stm #sublayout

USB C to UART converter using the FTDI232RL IC

A smart ESP32-based battery management system controller board for Lithium ion battery packs/cells. Capable of communicating to wide varieties of hybrid-smart inverters with CANbus, RS485 and UART communication.

A smart ESP32-based battery management system controller board for Lithium ion battery packs/cells. Capable of communicating to wide varieties of hybrid-smart inverters with CANbus, RS485 and UART communication.

This is a stereo WiFi camera reference design using dual ESP32-CAM modules for edge computing. The design includes connections for power, ground, and core communication features; UART for control & data transfer, and BOOT pins for mode selection. #WiFi #MCU #stereo #ReferenceDesign #project #ESP32 #camera #referenceDesign #edgeComputing #espressif #template #reference-design

small UGV based with 4x brushless motor drivers Wifi and lora connectivity:battery connection is xt-90 pcb:) :RPI 4 mount with uart connectivity to EPS32-s3

This is a Pet Tracker Reference Design based on STM32L4. Tracker connects with network by SIM800L module connected to the STM. Also MCU connected to the GPS by uart and send data to server #STM32 #GPS #G4 #G3 #LTE #IoT #Tracker #referenceDesign #edge-computing #edgeComputing #stm #template #reference-design

This is a Pet Tracker Reference Design based on STM32L4. Tracker connects with network by SIM800L module connected to the STM. Also MCU connected to the GPS by uart and send data to server #STM32 #GPS #G4 #G3 #LTE #IoT #Tracker #referenceDesign #edge-computing #edgeComputing #stm #template #reference-design

WIP: Send French Linky info to BLE UART

This is a Pet Tracker module based on STM32L4. Tracker connects with network by SIM800L module connected to the STM. Also MCU connected to the GPS by uart and send data to server #STM32 #GPS #G4 #G3 #LTE #IoT #Tracker #reusable #module #edge-computing #edgeComputing #stm #sublayout

FT232R USB 2.0 to UART (RS232) Bridge Interface Evaluation Board #commonpartslibrary #developmentboard #kits #evaluationboard #uart #UM232R

This is a Pet Tracker Reference Design based on STM32L4. Tracker connects with network by SIM800L module connected to the STM. Also MCU connected to the GPS by uart and send data to server #STM32 #GPS #G4 #G3 #LTE #IoT #Tracker #referenceDesign #edge-computing #edgeComputing #stm #template #reference-design

A smart ESP32-based battery management system controller board for Lithium ion battery packs/cells. Capable of communicating to wide varieties of hybrid-smart inverters with CANbus, RS485 and UART communication.

This is a Pet Tracker Reference Design based on STM32L4. Tracker connects with network by SIM800L module connected to the STM. Also MCU connected to the GPS by uart and send data to server #STM32 #GPS #G4 #G3 #LTE #IoT #Tracker #referenceDesign #edge-computing #edgeComputing #stm #template #reference-design

USB C to UART converter using the FTDI232RL IC

This is a Pet Tracker module based on STM32L4. Tracker connects with network by SIM800L module connected to the STM. Also MCU connected to the GPS by uart and send data to server #STM32 #GPS #G4 #G3 #LTE #IoT #Tracker #reusable #module #edge-computing #edgeComputing #stm #sublayout

This is a Pet Tracker Reference Design based on STM32L4. Tracker connects with network by SIM800L module connected to the STM. Also MCU connected to the GPS by uart and send data to server #STM32 #GPS #G4 #G3 #LTE #IoT #Tracker #referenceDesign #edge-computing #edgeComputing #stm #template #reference-design

JTAGulator copied from Joe Grand design. Allows to discover JTAG interfaces on embedded systems. Also allows to find UART interfaces. Is able to use OpenOCD to debug chips.

The RP2350, developed by Raspberry Pi Ltd, is a high-performance microcontroller designed to cater to a broad range of applications requiring efficient power management, advanced security features, and versatile IO options. This microcontroller stands out with its dual-core architecture, featuring either Cortex-M33 or Hazard3 processors operating at up to 150 MHz, ensuring robust performance for complex applications. It boasts a substantial 520 KB of on-chip SRAM distributed across 10 independent banks, enhancing parallel data processing capabilities. Additionally, the RP2350 supports up to 16 MB of external QSPI flash/PSRAM for extensive program and data storage, further expandable via an optional second chip-select. A notable feature of the RP2350 is its integrated on-chip switched-mode power supply, designed to generate core voltage efficiently, complemented by a low-quiescent-current LDO mode for reduced power consumption in sleep states. Security is a paramount feature of the RP2350, offering options for boot signing with key fingerprint in OTP, hardware mitigations against fault injection attacks, and a hardware SHA-256 accelerator for cryptographic operations. The microcontroller is also equipped with a comprehensive set of peripherals, including USB 1.1 controller and PHY, multiple UARTs, SPI, and I2C controllers, 24 PWM channels, and 12 programmable IO (PIO) state machines, providing extensive interface capabilities. The RP2350 is available in QFN-60 and QFN-80 packages, with or without flash-in-package options, catering to various design requirements and application needs.

SmartDeskPet v1.0 Shield Stage 1 status: - Goal: 5V input -> dual AMS1117-3.3 rails (+3V3_MCU and +3V3_WIFI) with common GND. - Note: Keep power nets explicitly named (avoid unnamed nets) to keep ERC happy. Stage 1 completion checklist: - Mark J1 Pin_1 (+5V) as a Power Output pin to satisfy ERC power-driver checks. - Verify all GND symbols/returns are on the same GND net. - Keep +5V_SERVO isolated from the main +5V net (only share GND). Stage 2 preparation notes (MPN/LCSC + layout constraints): - MPN/LCSC targets to define before Stage 2 exit: - AMS1117-3.3 (SOT-223): set exact MPN and (optionally) LCSC PN for both U1 and U2. - 100nF capacitor (0603): set MPN/LCSC for all 0603 100nF decouplers. - 4.7k resistor (0603): set MPN/LCSC for I2C pull-ups R1 and R2. - 1000uF bulk capacitor (radial): set MPN/LCSC for C7 (CP_Radial_D10.0mm_P5.00mm). - DC005 power jack/regulator input: select exact DC005 footprint + MPN/LCSC (if used). - 2.54mm headers/sockets: set MPN/LCSC for H1, H2, J1, J3, J4, J5, P3, P4, P5, and J2. - ESP-01S antenna keepout: - Reserve a copper keepout under and in front of the ESP-01S onboard antenna. - No copper pours/traces/components in the antenna region (top and bottom) per module guidelines. - H1/H2 header spacing: - Maintain 1000 mil spacing between H1 and H2 header centerlines (shield mechanical requirement). - Silkscreen placeholders: - Add silkscreen labels for: 5V IN, GND, +3V3_MCU, +3V3_WIFI, SERVO1, SERVO2, I2C SDA/SCL, DHT11, ASRPRO UART2, ESP-01S UART3. - Add placeholder text for: MPN, LCSC, board revision, and date code. Stage 3 layout constraints (placement and routing guidance): - Connector placement strategy: - Place H1 and H2 first to lock the shield mechanical interface; enforce 1000 mil spacing. - Place J1 and any DC005 input at the board edge for easy access. - Designated power area planning: - Group U1, U2, and C7 near the 5V entry point; keep high-current 5V and regulator loops short. - Use wide copper for +5V and any servo supply; stitch GND around power section. - Antenna keepout boundaries: - Place J2 (ESP-01S socket) at a board edge with the antenna facing outward. - Enforce a top-and-bottom copper keepout in the antenna region; keep noisy power traces away.

Pocket Soundbox – LiPo-Powered Cellular I2S MP3 Audio Player (SIMCom A7670E-LASE, Nano-SIM, I2S MP3 to PCM5101A DAC, FM8002E Amp, 1.8V↔3.3V UART/PWRKEY Level Shifting, Remapped J4, MP2315 3.3V Power Path, USB-C ESD/TVS) with power ON/OFF long-press control via SW2 and Q2 featuring pull-ups, RC debounce, and PFET safety clamp (#Cellular #I2S #LiPo #Audio #powerbutton #debounce #PFET)