Building a Constant Current/Constant Power Electronic Load
A while back I built a simple constant current electronic load using an aluminum HDD cooler case as the heatsink. […]
Interfacing TLV5620 With Arduino
TI’s TLV5620 is a budget 4-channel 8-bit DAC. While it is designed primarily for running with a power supply between […]
An Isolated DAC Using PWM Output
Arduino‘s (ATmega328P) PWM outputs via analogWrite can be conveniently turned into analog voltage levels through the use of simple RC […]
VFD Clock – Putting Everything Together
After I completed the filament driver and the circuit to drive the multiplexed VFD segments, it is time to finish […]
A DIY Vacuum Fluorescent Display Driver
In my previous post, I showed a simple vacuum fluorescent display filament driver built using a 555 timer and a […]
Temperature and Humidity Logging Over Ethernet — II
Last week, I discussed the construction of a network-capable temperature and humidity sensor using SHT21 and ENC28J60 with an ATmega328P […]
Temperature and Humidity Logging Over Ethernet — I
I did a project on temperature/humidity logging a couple of years ago. In that project I logged the temperature and […]
Keithley 196 Firmware/Calibration Data Backup
I bought a used Keithley 196 bench multimeter a few weeks ago. This is a 6 ½ digit 3,030,000 counts […]
Arduino Dev PCB Using Seeed Fusion PCB Service
I have been mainly using perf-boards for my electronics projects. Since most of the stuff I build are not very […]
Interfacing ADS1224 With Arduino
ADS1224 is a 24-bit delta-sigma analog-to-digital converter with 4-channel differential inputs multiplexer. This ADC chip offers a 20-bit effective resolution […]
DDS Function Generator Build
I picked up an AD9850 DDS module on eBay an couple of weeks ago and decided to build a MCU […]
I2C Multiplexer Shield Testing
I built an I2C multiplexer shield using an Arduino prototyping shield from SchmartBoard a couple of weeks ago. The shield […]
Prototyping With Schmartboard Arduino Shield Board
Neal at Schmartboard sent me a 0.65mm pitch Arduino prototyping shield kit a few weeks ago. I had meant to […]
Reverse Engineering the Syma S107G IR Protocol
I got a Syma S107G IR controlled helicopter for my son a while ago. This tiny remote control helicopter is […]
Code For MCP4821/MCP4822
Microchip‘s MCP4821/MCP4822 is a low budget 12-bit digital-to-analog converter. MCP4821 is the single channel version whereas MCP4822 has two channels […]