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Kerry D. Wong

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Interfacing a Noritake VFD Module with Arduino

October 1, 2018 kwong

I recently bought a Noritake-itron VFD module off eBay. Noritake-itron specializes in making vacuum fluorescent displays for many OEMs. As […]

AVR/Arduino, Electronics Arduino, Arduino Nano, CU20026-TW200A, CU20026SCPB-T26A, itron, MCU, Noritake, Vacuum Fluorescent Display, VFD

Controlling an HMC624LP4E RF Attenuator Using Arduino

July 15, 2018 kwong

I recently found a Hittite (acquired by Analog Devices in 2014) HMC624LP4E evaluation board gathering dust in my miscellaneous PCB […]

Electronics Analog Devices, Arduino, GaAs, Hittite, HMC624A-EP, HMC624LP4E, I2C, LCD, MMIC, SPI

A Quick Look at the M5Stack ESP32 Development Kit

April 30, 2018 kwong

I recently received an M5Stack ESP32 development kit from Banggood. Although I have not used any ESP32 based development boards […]

Electronics, Product Reviews Arduino, Bionic Beaver, ESP32, IoT, Linux, M5Stack, Ubuntu, Ubuntu 18.04

Reverse Engineering a Uniden Cordlessphone LCD

June 4, 2017 kwong

I recently upgraded my home phone system and thus was left with a couple of old Uniden DCT648-2 handsets. Most […]

Electronics Arduino, Atmega328P, Cordless Phone, DCT648-2, Handset, LCD, Logic Analyzer, Protocol, Reverse Engineering, SPI, Uniden

Interfacing HDC1050 with Arduino

October 16, 2015October 16, 2015 kwong

Recently, I got my hands on TI‘s HDC1050 low power, high accuracy digital humidity/temperature sensor chip. The supply voltage of […]

AVR/Arduino Arduino, Atmega328P, HDC1050, I2C

Yet Another Scanning Monochromator Build

August 16, 2015 kwong

A while ago, I saw a video on the signal path in which Shahriar modified his Verity EP200Mmd monochromator/detector and […]

Electronics Arduino, Diffraction grating, EP200Mmd, He-Ne Laser, Monochromator, Optical Encoder, Spectrum, Verity

Turn Your Android Phone into a Wireless Touchpad

January 18, 2015January 20, 2015 kwong

In this blog post, I will show you a simple way of turning your Android phone into a wireless touchpad. […]

AVR/Arduino, Coding, Electronics Android, Arduino, Arduino Due, BC417, Bluetooth, HC-06, HID

Using Arduino Due’s True Random Number Generator

October 19, 2014 kwong

Arduino Due uses an Atmel SAM3X8E ARM Cortex-M3 CPU, which has a native hardware based True Random Number Generator (TRNG). […]

AVR/Arduino Arduino, Arduino Due, ATSAM3X8E, TRNG, True Random Number Generator

On Arduino Due PWM Frequency

September 21, 2014 kwong

I just got myself a couple of Arduino Due boards. While they were released almost two years ago, I have […]

AVR/Arduino Arduino, Arduino Due, ATSAM3X8E

DS3232 Clock Frequency Calibration

July 19, 2014 kwong

DS3232 is an extremely accurate RTC with a guaranteed accuracy of 2.5 ppm (0 °C to 40 °C), which translates […]

AVR/Arduino, Electronics Arduino, DS3232, HP 5350B, TCXO

MCP3903 Library

May 10, 2014 kwong

MCP3903 is a six channel Delta-Sigma A/D converter. It features six synchronous sampling differential channels which can be programmed to […]

AVR/Arduino, Coding Analog/Digital Converter, Arduino, Atmega328P, MCP3903

Modify An Off-the-Shelf CP2102 Module As An Arduino Programmer

May 3, 2014 kwong

A while back, I wrote an article on how to use a CP2102 USB/UART converter chip in place of an […]

AVR/Arduino, Electronics Arduino, Atmega328P, CP2102

Extending DAC Resolution Using Digital Potentiometer

March 9, 2014 kwong

One way to extend the resolution of a digital-to-analog converter (DAC) is by employing a sigma-delta converter in software. The […]

AVR/Arduino, Electronics AD/DA, AD5206, AD8603, Arduino, DAC, LTC1665, TLV5620

LM92 Library for Arduino

January 19, 2014 kwong

LM92 is a 12-bit + sign temperature sensor from Texas Instruments. This sensor operates on the I2C interface and can […]

AVR/Arduino Arduino, Atmega328P, LM92, Temperature Sensor

A Simple Serial Protocol

January 11, 2014 kwong

We can send and receive commands wirelessly with Arduino by using these cheap RF data link transmitters/receivers. I like these […]

AVR/Arduino Arduino, Atmega328P, CRC, Protocol, Serial Communication

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