MOKCUM CAI-150 Multi Functional Calculator DIY Kit Instruction Manual

CAI-150 Multi Functional Calculator DIY Kit

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Specifications:

• Work Voltage: DC 6V
• Display Color: Blue/White Screen
• Power Type: CR2032*2 Battery (Not Included)
• Work Temperature: -40~85°C
• Work Humidity: 5%~95% RH
• Size (Installed): 1268636mm

Product Information:

The CAI-150 Multi-Functional Calculator DIY Kit is a versatile
electronic soldering kit that integrates five different computing
functions. It is powered by two CR2032 button batteries and
features a traditional LCD1602 display screen for real-time
calculation display. This kit serves as both a DIY electronic
welding project to enhance understanding of circuits and soldering
skills, as well as a practical experimental workbench tool.

Product Usage Instructions:

1. Basic Arithmetic Calculator:

Perform basic arithmetic calculations using the keypad and
display screen.

2. 4-Color or 5-Color Ring Resistance Calculator:

Input the color sequence of the metal film resistor surface to
obtain resistor’s resistance value and error value.

3. Calculate the Working Series Resistor for LED:

Utilize the kit to determine the appropriate series resistor for
LEDs.

Component Listing:

FAQ:

Q: Do I need to prepare CR2032 batteries for this kit?

A: Yes, this version of the kit does not include CR2032
batteries, so users need to prepare them separately.

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CAI-150 Multi-Functional Calculator DIY Kit
CAI-150 Multi-Functional Calculator DIY Kit
Note: This version does not include CR2032 batteries, users need to prepare them.
1.Introduction:
CAI-150 is Multi-Functional Calculator Electronic Soldering DIY Kit. It is powered by two CR2032 button batteries, integrates five different computing functions, and uses a traditional LCD1602 display screen to display the calculation process and results in real-time.
It can not only be used as a DIY electronic welding kit that allows you to better understand the circuit and learn how to soldering, but also as a very suitable experimental workbench tool.
2.Feature:
1>.Basic Arithmetic Calculator 2>.4-Color or 5-Color Ring Resistance Calculator 3>.Calculate the working series resistor for LED 4>.Decimal to Hexadecimal 5>.Hexadecimal to Decimal 6>.Arithmetic Square Root Calculator 7>.Classic LCD1602 LCD Display Screen 8>.45 Transparent Matrix Keyboard 9>.Automatic power off without operation within 30 seconds 10>.DIY Hand Soldering
3.Parameter:
1>.Work voltage: DC 6V 2>.Display Color: Blue/White Screen 3>.Power Type: CR20322 Battery(NOT Included) 13>.Work Temperature:-40~85 14>.Work Humidity:5%~95%RH 15>.Size(Installed):1268636mm
4.Use Methods:
1>.Function-1: Basic Decimal Arithmetic Calculator with decimal point and minus sign. E.g: Calculate the result of 5*6 ‘. Steps: 1.1>.PressON’ button to power ON. 1.2>.Press the buttons 5 ‘, * ‘, 6 ‘and = ‘ in sequence. 1.3>.Automatically Calculate and display Results 30 1.4>.Press AC’ button can be cleared to zero. E.g: Calculate the result of -8+2 ‘. Steps: 1.1>.Press ON’ button to power ON. 1.2>.Press the buttons – ‘, 8 ‘, + ‘, 2 ‘and = ‘ in sequence. 1.3>.Automatically Calculate and display Results – 6 1.4>.Press AC’ button can be cleared to zero. 2>.Function-2: 4-Color or 5-Color Ring Resistance Calculator. Input the color of the metal film resistor surface in sequence, then you can get resistor’s resistance value and error value. E.g: 5-Color Ring Resistor within Yellow,Violet,Black,Brown,Brown. Steps: 2.1>.PressON’ button to power ON. 2.2>.Press MODE’ button to switch to Color Ring R C 5′ display interface. 2.3>.Press the buttons Yellow’, Violet’, Black’,Brown’ and Brown’ in sequence. 2.4>.Automatically Calculate and display Results resistance value 4700ohm and error value 1% 2.5>.PressAC’ button can be cleared to zero. E.g: 4-Color Ring Resistor within Green,Red,Yellow,Gold. Steps: 2.1>.Press ON’ button to power ON. 2.2>.PressMODE’ button to switch to Color Ring R C 5′ display interface. 2.3>.Press’ button to switch to Color Ring R C 4′ display interface. 2.4>.Press the buttonsGreen’, Red’,Yellow’, and `Gold’ in sequence. 2.5>.Automatically Calculate and display Results resistance value 520Kohm and error value 5%
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CAI-150 Multi-Functional Calculator DIY Kit

2.6>.Press AC’ button can be cleared to zero. Note: Operation error if displayerror’. 3>.Function-3:Calculate Series Resistor for LED. Note: The following parameters need to be known: Circuit Work Voltage, LED Work Voltage, LED Work Current, Then you can calculate and obtain the series resistance value. Calculate Formula: R=U/I=(Vi-Vd)/I. Vi is the Circuit Work Voltage. Vd is the LED Work Voltage. I is the LED Work Current. R is the series resistor. E.g: Circuit Work Voltage Vi is 5V, LED Work Voltage Vd is 3V, LED Work Current I is10mA. So the resistor’s work voltage is Vi-Vd=5V-3V=2V. Steps: 3.1>.Press ON’ button to power ON. 3.2>.PressMODE’ button to switch to Rled Vi-Vi= V I= mA R= ‘ display interface. 3.3>.Press’ button to input LED Work Current. 3.4>.Press the buttons 1 ‘, 0 ‘ and = ‘ in sequence. 3.5>.Automatically Calculate and display Results resistance value 200ohm. 3.6>.PressAC’ button can be cleared to zero. 4>.Function-4:Decimal to Hexadecimal and Hexadecimal to Decimal. E.g: Decimal to Hexadecimal. Steps: 4.1>.Press ON’ button to power ON. 4.2>.PressMODE’ button to switch to 10HEX-16HEX’ display interface. 4.3>.Input Decimal value and then can get a Hexadecimal value automatically. 4.4>.PressAC’ button can be cleared to zero. E.g: Hexadecimal to Decimal. Steps: 4.1>.Press ON’ button to power ON. 4.2>.PressMODE’ button to switch to 10HEX-16HEX’ display interface. 4.3>.Press’ button to switch to 16HEX-10HEX’ display interface. 4.4>.Input Hexadecimal value and then can get a Decimal value automatically. 4.5>.Press AC’ button can be cleared to zero. 5>.Function-5: Arithmetic Square Root Calculator. E.g: Calculate the value of 4′. Steps: 5.1>.PressON’ button to power ON and display Basic Decimal Arithmetic Calculator. 5.2>.Press ’ button to switch to0′ display interface at. 5.3>.Press the buttons 4 ‘, and = ‘ in sequence. 5.4>.Automatically Calculate and display Results resistance value 2. 5.5>.Press `AC’ button can be cleared to zero. 6>.CR2032 Battery: It is powered by two RC2032 batteries(NOT Include). Due to limited battery capacity, frequent use or prolonged standby may result in low battery power and inability to function properly. Please replace the batteries promptly. 7>.Automatic shutdown: Automatic power off without operation within 30 seconds.
5.Component Listing:

NO. Component Name

PCB Marker

Parameter

QTY

1 IN4148 Diode

D1,D2

DO-35

2

2 Metal Film Resistor

R5

330ohm

1

3 Metal Film Resistor

R4

1Kohm

1

4 Metal Film Resistor

R1,R2,R3

10Kohm

3

5 16Pin Male Pin

LCD1602

19mm

1

6 16Pin Female Pin

LCD1602

1

7 Ceramic Capacitor

C4

0.1uF 104

1

8 7550A-1 Voltage Regulator

U1

TO-92

1

9 S8550 Transistor

Q1

TO-92

1

10 S9013 Transistor

Q2

TO-92

1

2

CAI-150 Multi-Functional Calculator DIY Kit

11 IAP15W413AS

U2

DIP-28

1

12 IC Socket

U2

DIP-28

1

13 CR2032 Battery Socket

BT2

2

14 Black Button

S1-S20

12*12mm

20

15 Blue Button Cap

S1-S20

20

16 Transparent Button Cap

S1-S20

20

17 Self Tapping Screw

8mm

4

18 Self Tapping Screw

7mm

8

19 LCD1602 Display Module

LCD1602

1

20 Black Shell

2

21 PCB Circuit Board

220*68mm

1

Note:Users can complete the installation according to the PCB silk screen and component list.

6.Schematic Diagram:

7.Application:
1>.Training welding skills 2>.Student school 3>.DIY production 4>.Project Design 5>.Electronic competition 6>.Gift giving 7>.Crafts collection 8>.Home decoration 9>.Souvenir collection 10>.Graduation design 11>.Holiday gifts
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CAI-150 Multi-Functional Calculator DIY Kit
8.Installation Tips:
1>.User needs to prepare the welding tool at first. 1.1>.Soldering iron (<50 Watt) 1.2>.Rosin core (“radio”) solder 1.3>.Wire cutters 1.4>.Wire strippers 1.5>.Screwdriver
2>.Please be patient until the installation is complete. 3>.The package is DIY kit.It need finish install by user. 4>.The soldering iron can’t touch the components for a long time(1.0 second), otherwise it will damage the components. 5>.Pay attention to the positive and negative of the components. 6>.Strictly prohibit short circuit. 7>.User must install the LED according to the specified rules.Otherwise some LED will not light. 8>.Install complex components preferentially. 9>.Make sure all components are in right direction and right place. 10>.It is strongly recommended to read the installation manual before starting installation!!! 11>.Please wear anti-static gloves or anti-static wristbands when installing electronic components.
9.Installation Steps(Please be patient install!!!):
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