Embedded Lab

Ajoy Raman’s new project on Instructable is about making a low-cost hand-held tweezers to meause R, L, C, and Z (complex impedance). The project uses the TI’s TMS320F28027 micro-controller, an 8-port-analog-switch ADG714 from Analog Devices and the MCP6022 rail-to-rail dual Opamp IC. The ZLRC measurements are sent to a PC through an USB port using an USB-to-TTL converter. He also developed a GUI application for the PC end to display the results.

USB tweezers for ZRLC measurements