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Electronics

JDY-30/JDY-31 Bluetooth Modules

I have created an English translation of the JDY-30/JDY-31 Bluetooth modules with the AT command set:

• JDY-30/JDY-31 Bluetooth Modules

STM32

I started experimenting with the STM32 family of ARM microcontrollers from ST Micro, check my first project here:

• Blinky++ for the STM32F103C8T6

Raspberry Pi

I am working on a project where a Raspberry Pi hosts a web server which can be used with a cell phone, tablet or PC to control various things in the house. The following pages are the building blocks for that application. Like most everything else on this site, they are a work in progress, keep checking if you are into the Raspberry Pi embedded computer.

• Raspberry Pi FLASH Memory Corruption Avoidance
• Configure the Ralink 5370 WiFi Dongle on the Raspberry Pi
• Install useful software packages on Raspbian
• Mount Linux Read-Only on Raspbian
• Configure the Raspberry Pi as an access point
• Serial port access from PHP with Raspberry Pi

Microcontroller projects and tools

• I2C LCD Driver
• 8051 Code Samples
• 68HC05 Code Samples
• Free Assemblers for 8051, 68HC05 and 68HC11

Hardware Projects

• An Optimizing Controller for a Solar Powered Battery Charger.
• A Synthesized Audio Frequency Generator
• High Intensity LED Driver operating from a single 1.5V cell.
• A SPICE model for the heater in the LTZ1000 Voltage Reference

Electronics Course

• Electronics 102, a work in progress in basic electronic circuit design

Non-Ham Software

• Tone Generator, A program to generate audio tone(s) using your sound card.
• MP3Tools, A program to split or merge (join) MP3 files.
• POPMail, An email program to access POP servers.
• WebCam, A program to capture and upload web cam pictures to your web page.

Product Reviews

• SR-700 Step-Up Switching Regulator
• FT-1000 test data
• Extron ADA 3 80 Video Distribution Amplifier

Audio

• Information and resources to make the most out of PC Audio