Learn Arduino programming by creating 150+ Arduino tutorials and projects with step by step instructions and example sketches in Arduino IDE
9 GPS modules ranked for Arduino and ESP32, from the NEO-6M, NEO-7M and GT-U7 to the Beitian BN-880, NEO-M8N, ATGM336H, u-blox M10, SparkFun NEO-M9N and ZED-F9P RTK, with verified Amazon listings, real chipset specs and honest verdicts.
The best RS485 modules compared: 8 MAX485, auto-direction, 3.3V SP3485, galvanically isolated, USB to RS485 and Raspberry Pi HAT picks for Modbus RTU and long-distance serial with Arduino, ESP32, STM32 and Raspberry Pi.
Compare the best MCP2515 CAN bus modules for Arduino, ESP32 and Raspberry Pi, from the classic MCP2515 TJA1050 breakout to OBD-II shields and isolated dual channel HATs, with verified Amazon listings.
The best NRF24L01 wireless modules compared: 8 picks including the NRF24L01+PA+LNA with SMA antenna, shielded E01-ML01DP5, regulated 3.3V breakout adapters, multi-node kits and the RF-Nano, ranked on range, power stability and ease of use for Arduino, ESP32 and Raspberry Pi.
Eight LCR meters compared for electronics design, repair and SMD work, from the DER EE DE-5000 and Keysight U1733C to budget 100 kHz testers and smart tweezers, with verified Amazon links, datasheet specs and honest verdicts.
The best digital calipers for makers: 8 picks including the Mitutoyo 500-196-30, iGaging Absolute Origin, Mitutoyo 505-742J dial, Clockwise Tools DCLR-0605, NEIKO 01407A and Starrett, compared on accuracy, encoder type, IP rating and data output for 3D printing, electronics and hobby machining.
The best Arduino Pro Mini boards compared: genuine SparkFun 5V/16MHz and 3.3V/8MHz boards, HiLetgo clone packs, a CP2102 starter kit, a 5-pack lot and the FTDI programmers you need to upload code.
Seven Orange Pi single board computers ranked and compared, from the tiny Allwinner H618 Zero 3 to the RK3588 powered Orange Pi 5 Plus, with real specs, honest verdicts and direct Amazon links.
Eight obstacle avoidance robot kits ranked, from a servo-swept ultrasonic Arduino car to a mecanum robot with two infrared sensors plus sonar and a Raspberry Pi that avoids obstacles with a camera, with real specs, honest verdicts and verified Amazon links.
7 of the best 6-DOF robot arm kits compared for 2026 — Hiwonder xArm 1S, Yahboom DOFBOT, LeArm Open Source, OWI-535, Waveshare RoArm-M3-S, SO-ARM101 and ArmPi FPV — with real specs, honest pros and cons, and verified Amazon links.