Soldering Instructions
Turn on the soldering iron and set the temperature to 280°C. Since this guide is created for
intermediate users we expect you to understand to wet the tip of the soldering iron and clean any
excess old solder or new solder off the tip.
Place the components onto the board and solder from the lowest overhead component that is the
small component onto the board first.
Flip the board and bend the leads to ensure the component does not fall off, solder the component
into place and cut the leads.
Continue in this order and solder all the components into place and trim all the excess leads. Refer
back to the parts list if you don’t know which component goes into the PCB.
Solder the female header to the Screen and the male header to the board. This allows you to remove
the screen any time.
Plug the 9v battery and power on the unit without inserting the ATMEGA328P IC. Measure the voltage
using a multi-meter from pin 7 and 22 on the IC socket holder. The voltage should be read as 5v, if you
don’t see any power press the switch!
Power down the unit by removing the battery and insert the IC, ensure the IC Dip matches with the
socket and board. Insert the spacers into the screen bottom row to offer some spacing from the screen
bending downwards (this is optional; you could leave the screen hanging).
You may know proceed to the Operation guide to calibrate the system.
Functions
Long press the power button upon start up before testing to get into selection.
Under selection mode you have the modes listed below, switch to another by pushing
downwards and cycle to get the selection. Select the option by long pressing down. With the
selection to change values count 1, 2 when pushing the switch in any direction and then let go.
Transistor: Will automatically test the transistor under any pin.
Frequency: Will measure the input waveform.
F-generator: Will generate a waveform. (pin 2 is output pin 3 is ground)
10-bit PWM: will generate a 10-bit square wave with adjustable duty cycle. (1% short press,
10% long press Pin 2 is output pin 3 is ground)
C+ESR@TP1:3: Is a capacitor ESR Tester using pin 1 and 3 only. From 2µF up to 50mF
Self-Test: Read the operation guide for calibration
Show Data: Shows version number along with internal settings for resistance value.
Switch off: Powers down.