The best frequency counters in 2026 — 10 benchtop, handheld and module picks for electronics, ham radio and RF work, compared on range, timebase, display and features.
10 of the best gas and air quality sensor modules for Arduino, ESP32 and Raspberry Pi — BME680, SCD41, SGP30, MH-Z19B, PMS5003, MICS-6814, CCS811 and the MQ series compared on what they measure, interface and accuracy, with honest verdicts and direct Amazon links.
The best function and signal generators for 2026 — 8 benchtop and DDS picks from Rigol, Siglent, UNI-T, OWON and Koolertron compared on bandwidth, channels, sample rate, and price.
The best USB oscilloscopes for 2026 — 10 PC-based scopes from Pico, Digilent, Hantek, OWON and LOTO compared on bandwidth, sample rate, channels and software, with honest verdicts and direct Amazon links.
The best beginner FPGA development boards in 2026 — 10 Xilinx, Intel, Gowin and Lattice picks compared on FPGA family, logic capacity, toolchain and on-board I/O, with honest verdicts and direct Amazon links.
The best dedicated RISC-V development boards in 2026 — 8 picks compared, from the flagship SiFive HiFive Premier P550 and Linux SBCs to Kendryte AI boards and bare-metal MCUs. Real specs, honest verdicts, and direct Amazon links.
The best JTAG/SWD debuggers for embedded firmware developers in 2026 — 8 debug probes for STM32, ESP32, nRF and RP2040 compared on interfaces, target support, speed and license, with honest verdicts and direct Amazon links.
The best nRF52840 development boards in 2026 — 8 Bluetooth 5 / Thread / Matter boards from Seeed, Adafruit, SparkFun, Makerdiary and Waveshare compared on size, GPIO, sensors, debugging and use case, with honest verdicts and direct Amazon links.
The best Raspberry Pi Zero 2 W kits for 2026 — 8 starter, camera, display and learning kits compared, with clear “board included?” flags, honest pros & cons and direct Amazon links.
The best power supplies for microcontroller projects in 2026 — 8 picks for Arduino, ESP32 & STM32 compared on voltage/current range, ripple, programmability and price.