The best of TP-Link Kasa and Tapo: HS220 and KS205 switches, Tapo S505D Matter dimmers, KL135 bulbs, Tapo C211 cameras, D205 doorbell and the H100 hub with T110, T315 and T300 sensors compared.
Wired ESP32 boards for ESPHome, BLE proxies and IoT gateways: Waveshare ESP32-S3 ETH with PoE, WT32-ETH01, ESP32-S3 PoE camera boards and ESP32-P4 PoE ETH boards, with honest notes on PoE and reviews.
Wi-Fi relay modules for DIY smart switches: SONOFF MINIR4, BASICR4, MINIR4M Matter, DUALR3 and 4CH Pro R3, Shelly 1 Mini Gen4, plus Waveshare, LILYGO and ESP8266 relay boards for ESPHome and Tasmota.
Wi-Fi smart plugs that keep working without the cloud: Shelly Plug US Gen4, Kasa KP115 and HS300, SONOFF S31 for Tasmota and ESPHome, Tapo P110M, Martin Jerry Tasmota plugs and more, with energy monitoring compared.
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.
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.
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.
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.
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.
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.