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Siu Yuen Ho
Más adiós Siu Yuen Ho

AVR Tutorial
This app is a AVR tutorial based on ATMEGA16 C language. It is suitable for hobbyist or engineering students.
Learning AVR mcu is difficult. The learning curve is steep. The process including reading datasheet, writing code, building prototypes and troubleshooting. The most possible errors are theInstalación

Tracks Logger
This app records your tracks into files
Features:
Log latitude, longitude , altitude, speed and distance
Save data in CSV, KML, GPX, TCX (Garmin) , FITLOG (SportTracks) and NMEA files
Support both Apple map services and Google Map
Support background logging
Share file via AirDrop
Upload
Instalación

8051 Tutorial
This app is a 8051 tutorial based on C language. It is suitable for hobbyist or engineering students.
Features
• 8051 architecture review
• 8051 asm mnemonics
• 8051 C language
• 11 projects including LED, buzzer, key switch, external interrupt, 7-segment display, 8x8 led matrix, timer (mode 0,1 )Instalación

Resistor Tools
This app is a collection of resistor calculators. It is suitable for hobbyist or electronic engineer.
Calculate resistance of two resistors in series or parallel
Find out combinations of two resistors in series/parallel making a desired resistance
Calculate ratio of R1/R2 and voltage divider
Instalación

Thermistor Tool
This app is a calculator for thermistors. It is suitable for hobbyist, students or engineers.
Features
• support β model
• support Steinhart–Hart model
• conversion between temperature and resistance
• show temperature-resistance graph
All trade names mentioned in this app or the other documentatiInstalación

My Cube Timer Pro
The application records the time for completion of 2x2x2, 3x3x3 or 4x4x4 etc.
Features
Scramble generator for 2x2x2 and 3x3x3
The best time and average time are calculated.
Inspection timer
Exporting records to CSV file
Send CSV via AirDrop
Upload CSV to iCloud Drive (For iOS8 or
Instalación

Electronics Kit
This app is a powerful collection of electronics tools. It is suitable for hobbyist, electronic engineers or professionals
The FREE version may contain ads. You can also buy the PRO version to support the developer, unlock more features and get rid of the ads.
Component value functioInstalación

RC Circuit
This app is used to calculate the RC charging and RC filter circuit. It is suitable for hobbyist or electronic engineer.
Features
Calculate time constant from R, C
Find component value R,C from time constant
Get voltage at time t in RC charging / discharging
Calculate cutoff frequency by R,
Instalación

Scoreboard for Duckpin Lite
Features in Lite version
Record bowling score or pin location in database
Retrieve score or pin location from a database
Show statistic of the score, strike, pin location
Export history to CSV (Excel) files
Support 2 bowlers
Support up to 10 history records
Upload files to iCloud Drive
Instalación

Voltage Regulator
This app is a voltage regulator calculator. It is is suitable for electronics hobbyist, electronic engineers or professionals.
Features
Support 3-terminals adjustable voltage regulators
To find out combinations of 2 resistors making a desired output voltage
Calculate resistor values / outpu
Instalación

Easy Expense Lite
The simple interface design lets you keep records of income and expense easy. It is suitable for adults and their children
Features
Ease to use
Keep tracks of income and expense
Customize income and expense categories
You can modify or delete the records that you have created
Export
Instalación

My Cube Timer
The application records the time for completion of 2x2x2, 3x3x3 or 4x4x4 etc.
Features
Scramble generator for 2x2x2 and 3x3x3
The best time and average time are calculated
Limit 500 results per puzzle
Inspection timer
Exporting records to CSV file
Send CSV via AirDrop
Upload C
Instalación

Timer 555 Calculator Pro
This app is used to calculate monostable and astable circuit.
Features
Calculate pulse width of monostable circuit
Calculate frequency of astable circuit
Find out combination of components making a desire pulse width in monostable circuit
Find out combination of components making a desire f
Instalación

My Bowling Ultra
Bowling is my favorite hobby. I need an app to record down the score and pin location for further analyst. For example, what is the percentage of spare of “Big four”? or how many times of continuous 4 strike ? So, I decide to write this app.
Features
Record bowling score or bowling pin location i
Instalación

My Archery
This app is used to keep records of archery scores.
Features :
Record archery score in database
Record field conditions : distance and face size
Customize the number of ends and the number of arrows per end
Retrieve score history
Database backup and restore
Support multiple target dista
Instalación

My Archery Pro
This app is used to keep records of archery scores
Features :
Record archery score in database
Record field conditions : distance and face size
Customize the number of ends and the number of arrows per end
Multiple target distances
Preset GNAS and FITA rounds
Retrieve and edit sc
Instalación

My Bowling Pro
Bowling is my favorite hobby. I need an app to record down the score and pin location for further analyst. For example, what is the percentage of spare of “Big four”? or how many times of continuous 4 strike ? So, I decide to write this app.
Features
Record bowling score or bowling pin location i
Instalación

My Bowling
Bowling is my favorite hobby. I need an app to record down the score and pin location for further analyst. For example, what is the percentage of spare of “Big four”? or how many times of continuous 4 strike ? So, I decide to write this app.
Features
Record bowling score or bowling pin location i
Instalación

My Archery Ultra
This app is used to keep records of archery scores. It supports multiple archers. And it is suitable for archery coach.
Features :
Support multiple archers
Record archery score in database
Record field conditions : distance and face size
Customize the number of ends and the number of arrow
Instalación

Resistor Tools Pro
This app is a collection of resistor calculators. It is suitable for hobbyist or electronic engineer.
Calculate resistance of 2 resistors in series or parallel
Find out combinations of 2 resistors in series/parallel making a desired resistance
Calculate ratio of R1/R2 and voltage divider
Instalación

Timer 555 Calculator
This app is used to calculate monostable and astable circuit.
Features
Calculate pulse width of monostable circuit
Calculate frequency of astable circuit
Find out combination of components making a desire pulse width in monostable circuit
Find out combination of components making a desire f
Instalación

Tracks Logger Pro
This app records your tracks into files
Features:
Log latitude, longitude , altitude, speed and distance
Save data in CSV, KML, GPX, TCX (Garmin) , FITLOG (SportTracks) and NMEA files
Support both Apple map services and Google Map
Support background logging
Share file via AirDrop
Upload
Instalación

ZIP password finder
This app finds the passwords for ZIP files.
Features
support dictionary
support brute force
support importing word list file
customize charset per password character
Applications licensed to you are absolutely legal as long as you are the legal owner of all files or materials you wishInstalación

Easy Ohm's Law
Calculate voltage , current , resistance and power
Enter any of two items, the other items will be calculated
The units of calculated values will be adjusted automatically.
Support English, German, French, Italian, Spanish, Portuguese, Japanese, Korean, Traditional Chinese, Simplified Chin
Instalación

Fx Minimizer
Logic expression minimization becomes quite cumbersome with more than four variables. Quine-McCluskey method is the solution. The app use Quine-McCluskey method to minimize multiple variables logic expression
Features
Logic expression minimization using minterms
Logic expression minimization u
Instalación

RC Circuit Pro
This app is used to calculate the RC charging and RC filter circuit. It is suitable for hobbyist or electronic engineer.
Features
Calculate time constant from R, C
Find component value R,C from time constant
Get voltage at time t in RC charging / discharging
Calculate cutoff frequency by R,
Instalación

Opamp tools
This app is the collection of operational amplifier calculators. It is suitable for hobbyist or electronic engineer.
Features
Inverting amplifier
Non-Inverting amplifier
Differential amplifier
Summing amplifier
Inverting comparator
First-order filter
Second-order filter (HPF)
P
Instalación

Reliability of systems
This app is a tool for calculating reliability. It is suitable for hobbyist, students or engineers.
Features
• Mean-Time-Between-Failure (MTBF) calculator
• Reliability of series systems
• Reliability of parallel systems
• Reliability function
Features in PRO
• Reliability of mixed systems
All trInstalación

My Gate Ball
This app records your gate ball scores
Features in Lite version
Log gate ball scores
Show statistics
Compare team performance
Database backup and restore
Support maximum 2 teams
Support maximum 10 history records
Support English, Japanese, Korean, Traditional Chinese and Simplified
Instalación

Electronics Kit Pro
This app is a powerful collection of electronics tools. It is suitable for hobbyist, electronic engineers or professionals The FREE version may contain ads. You can also buy the PRO version to support the developer, unlock more features and get rid of the ads. Component vInstalación

EE Calculator
This app is a collection of basic electronic calculators. It is suitable for hobbyist, electronic engineers or professionals.Features• Calculate resistance of 2 resistors in series / parallel• To find out combinations of 2 resistors in series / in parallel making a desired resistInstalación

Easy Expense Pro
The simple interface design lets you keep records of income and expense easy. It is suitable for adults and their children
Features
Ease to use
Keep tracks of income and expense
Customize income and expense categories
You can modify or delete the records that you have created
Export
Instalación

Workshop for Raspberry Pi
This app is a collection of rich demo projects for makers, electronics enthusiast, or engineering students using Raspberry Pi development board
Features
Display projects
• Character LCM 16x2, 20x4
• I2C OLED 96x64
• SPI OLED 96x64
• TFT 176x220
Sensors Projects
• DHT11 (temperature and humi
Instalación

Fx Minimizer Pro
Logic expression minimization becomes quite cumbersome with more than four variables. Quine-McCluskey method is the solution. The app use Quine-McCluskey method to minimize multiple variables logic expression Features* Logic expression minimization using minterms* Logic expression miInstalación

AVR Tutorial Pro
This app is a AVR tutorial based on ATMEGA16 C language. It is suitable for hobbyist or engineering students.
Learning AVR mcu is difficult. The learning curve is steep. The process including reading datasheet, writing code, building prototypes and troubleshooting. The most possible errors are theInstalación

My Gate Ball Pro
This app records your gate ball scores Features in Lite version - Log gate ball scores- Show statistics- Compare team performance- Database backup and restore- Support maximum 2 teams- Support maximum 10 history records- Support English, Japanese, Korean, TraditiInstalación

EE Calculator Pro
This app is a collection of basic electronic calculators. It is suitable for hobbyist, electronic engineers or professionals.Features• Calculate resistance of 2 resistors in series / parallel• To find out combinations of 2 resistors in series / in parallel making a desired resistInstalación

8051 Tutorial Pro
This app is a 8051 tutorial based on C language. It is suitable for hobbyist or engineering students.
Features
• 8051 architecture review
• 8051 asm mnemonics
• 8051 C lanugage
• 22 projects including LED, buzzer, key switch, external interrupt, 7-segment display, 8x8 led matrix, timer (mode 0,1,2)Instalación

Workshop for Arduino
This app is a collection of rich demo projects for makers, electronics enthusiast, or engineering students using arduino development board
Features
Display projects
• Character LCM 16x2, 20x4
• Graphic LCM 128x64, LCM5110 (84x48)
• I2C OLED 96x64, SPI OLED 96x64
• TFT 176x220
• UART HMI TFT D
Instalación

Maker Projects 360
This app is a collection of rich demo projects for makers, electronics enthusiast, or engineering students.Features1. Support different boards• 8051• Atmega16• Arduino Uno• NodeMCU• ESP32• STM32• Raspberry Pi2. Display projects• Character LCM 1Instalación

My Gate Ball Ultra
This app records your gate ball scores Features in Lite version - Log gate ball scores- Show statistics- Compare team performance- Database backup and restore- Support maximum 2 teams- Support maximum 10 history records- Support English, Japanese, Korean, TraditiInstalación

Workshop for NodeMCU
This app is based on NodeMCU (ESP8266 MCU) development board. All the codes provided are written in C. It is suitable for hobbyist or students.
Features
Display projects
Character LCM 16x2
Graphic LCD 84x48
I2C OLED 96x64
SPI OLED 96x64
Sensors Projects
*
Instalación

Star-Delta Calculator
This app provides conversion between star delta electrical networks.
Features
Convert resistor star network to delta network
Convert resistor delta network to star network
Pro features
Convert capacitor star network to delta network
Convert capacitor delta network to star network
Co
Instalación

Scoreboard for duckpin Pro
Features in PRO version* Record bowling score or pin location in database* Retrieve score or pin location from a database* Show statistic of the score, strike, pin location* Export history to CSV (Excel) files* Support 2 bowlers* Appending game score or pin location in historInstalación

Scoreboard for duckpin Ultra
Features* Record bowling score or pin location in database* Support multiple bowlers* Retrieve score or pin location from a database* Show statistic of the score, strike, pin location* Data comparison* Export history to CSV (Excel), PDF, xlsx files* Upload files to iCInstalación

Workshop for Raspberry Pi Pico
This app is a collection of rich demo projects for makers, electronics enthusiast, or engineering students using Raspberry Pi Pico development board
Features
Display projects
• Character LCM 16x2
• I2C OLED 96x64
• SPI OLED 96x64
• TFT 176x220
• LED matrix
• P10 led matrix
Sensors Projec
Instalación
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