Microcontrollers tutorials and projects

Best Thermal Cameras for Electronics: 12 Klein, FLIR ONE, Fluke, Seek and PerfectPrime Imagers Compared (Buying Guide)

Klein Tools TI250 rechargeable thermal imaging camera

We compare 12 thermal cameras for finding hot chips and shorts on PCBs, led by the Klein TI250 and FLIR ONE Pro, plus the Klein TI290, Fluke PTi120, Seek CompactPRO, PerfectPrime and BSIDE SH7.

Best USB to CAN Adapters and CAN Bus Analyzers: 13 CANable, DSD TECH, innomaker, Waveshare and Kvaser Picks Compared (Buying Guide)

DSD TECH SH-C30A USB to CAN bus adapter based on CANable with candleLight firmware

We compare 13 USB to CAN adapters and CAN bus analyzers on Amazon, led by the DSD TECH SH-C30A CANable and innomaker USB CAN, plus CAN FD and isolated picks, Waveshare, SavvyCAN-FD and Kvaser Leaf v3.

Best USB-C Power Meters and PD Trigger Boards: 14 FNIRSI, POWER-Z, Klein, Plugable and Treedix Tools Compared (Buying Guide)

FNIRSI FNB58 USB-C tester with PD protocol trigger and e-marker reader

We compare 14 USB-C testers and PD trigger boards on Amazon, led by the FNIRSI FNB58 and POWER-Z KM003C, plus the Klein ET920, Plugable 240W meter, Treedix cable tester and PD trigger modules.

Best Hot Air Rework Stations: 14 YIHUA, WEP, Aoyue, SUGON and ATTEN Picks Compared (Buying Guide)

YIHUA 8786D I 2-in-1 hot air rework and soldering iron station

We compare 14 hot air rework stations on Amazon, led by the YIHUA 8786D I and 959D, plus the YIHUA 995D+ EVO, WEP 882D and 8858-V, Aoyue 968A+, SUGON 8620DX and ATTEN ST-862D.

Best Industrial Raspberry Pi Accessories: 12 DIN-Rail Mounts, Metal Cases, PoE, RS485/CAN, Relay and UPS HATs for Automation Projects (Buying Guide)

Waveshare industrial-grade metal case (D) for Raspberry Pi 5

The best accessories for turning a Raspberry Pi into an industrial controller: Raspberry Pi 5, Waveshare industrial metal case, DIN-rail brackets, PoE HATs for Pi 5 and Pi 4, RS485/CAN and isolated CAN HATs, a relay board and a UPS HAT, compared for Modbus, Node-RED and Home Assistant panels.

Best 4-20mA Tools and Modules: 11 Signal Generators, Current to Voltage Converters, Isolators and 4-20mA Sensors for Arduino, ESP32 and PLCs (Buying Guide)

DROK adjustable 4-20mA and 0-10V signal generator

The best 4-20mA tools and modules: DROK, UCTRONICS and Riiai signal generators, the Fluke 789 ProcessMeter, 4-20mA to 0-3.3V/5V/10V converter modules for Arduino and ESP32, a 0-5V to 4-20mA transmitter, a DIN-rail signal isolator, and 4-20mA level and temperature sensors.

Best PLCs for Beginners and Makers: 12 Siemens LOGO!, Arduino Opta, ESP32 Relay Controllers and FX1N PLC Boards Compared (Buying Guide)

The best PLCs for beginners, makers and small automation projects: Siemens LOGO! 12/24RCE, Arduino Opta WiFi, RS485 and Lite, ESP32-S3 industrial relay controllers, FX1N-compatible PLC boards, PLC+HMI all-in-ones and the Delta DVP14SS, compared by I/O, programming and use case.

Best Modbus Relay and I/O Modules: 12 RS485 and Ethernet Relay Boards, Digital and Analog I/O Modules Compared (Buying Guide)

Waveshare 8-channel Ethernet relay module with Modbus RTU/TCP and PoE

The best Modbus relay and I/O modules: Waveshare Modbus RTU RS485 relays, PoE Ethernet relays with Modbus TCP and MQTT (8, 16 and 30 channels), digital I/O and analog output modules, an ESP32-S3 Wi-Fi relay board and a 4-20mA analog input module, compared for PLC, home automation and DIY control.

Best Home Energy Monitors and Modbus Energy Meters: 10 Emporia, IAMMETER, Refoss, Shelly and PZEM-004T Picks Compared (Buying Guide)

Emporia Vue 3 home energy monitor with clamp-on CT sensors

The best home energy monitors and Modbus energy meters: Emporia Vue 3, IAMMETER DIN-rail Wi-Fi/Modbus meters, Refoss EM16P, Shelly Pro 3EM 120A v2, a CL200 RS485 Modbus sub-meter and PZEM-004T modules for Arduino and ESP32, compared for solar, Home Assistant and DIY projects.

Best RS485 to Ethernet Converters and Modbus Gateways: 13 Serial Device Servers from Waveshare, USR IOT and Moxa Compared (Buying Guide)

Waveshare industrial RS485 to Ethernet serial server with PoE and DIN rail mount

The best RS485/RS232 to Ethernet and Wi-Fi converters and Modbus RTU to TCP gateways: Waveshare PoE serial servers, USR-TCP232-410S, 302 and 306, USR-W610, USR-DR302, Moxa NPort 5110 and MGate MB3180, compared by ports, protocols, mounting and power.