In the past few years, we have covered plenty of smart multimeters here. The QUARK is also worth a look. It is an open source electronics multi-tool with a full-color screen and touch control that you can use to measure voltage, current, resistance, capacitance, and inductance. It also has an oscilloscope with a sampling rate of 400 kHz
The QUARK connects to iOS and Android devices via Bluetooth. It has a 700mAh battery that lasts up to 5 hours. It has convenient features such as a UART logger/plotter and signal generator. It comes handy with DIY projects involving Arduino, ESP32, STM32, and other platforms.
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