PCB For ATMEGA328 Transistor LCR Tester

Description

PCB For ATMEGA328 Transistor LCR Tester

This PCB For ATMEGA328 Transistor LCR Tester use this link as soldering guide and bill of materials also included

Based on the a development of the German open source project AVR Transistor Tester. Original project address: https://www.mikrocontroller.net/articles/AVR-Transistortester

The transistor tester is a very practical small tool. It was first developed based on Atmel ATMega8 and has been upgraded to ATMega328P. It can fully automatically measure resistance, capacitance, and inductance. For inductance and capacitance, it can also test the equivalent series resistance (ESR). In addition, it can automatically identify diodes, BJTs, MOSFETs and other components and measure their related properties. All these operations only require simply connecting the component to the test socket, and there is no need to even distinguish the pin order. The tester can automatically distinguish them and identify the order of the pins.

use this diagram for assembly and to know the BOM materials needed

here are the both HEX files for program and EEProm Data memory to be burned via any USB programmer

also please set the High Fuse to 0xD9 and Low Fuse to 0xF7 and the extended Fuse to 0xFC (other value will not work)

J1, J2 jumper instructions: Shorting J1 directly measures the battery voltage, but it will increase the power consumption by a few uA when shutting down. Shorting J2 will measure the battery voltage after passing through the switching circuit. It basically consumes no power when shutting down, but will There is a diode voltage drop of about 0.3V