Ferdinand Keil's

electronic notes

Jan 22, 2013

Use the TP-LINK TL-WR703N as a WiFi client with OpenWrt

I recently bought a TP-Link TL-WR703N router on eBay to connect one of my projects to the net. The router arrived today, just 18 days after I ordered it from China. I need it to operate as a client in my wireless network, so after I successfully installed OpenWrt I …

Nov 03, 2012

Simple Task Scheduler for Microcontrollers

For a project I'm currently working on I need to write a (at least for me) fairly complex firmware. The code I used in the last version of this circuit grew out of a test program and became unmaintainable. So I looked around for some inspiration and found Alan Burlison's …

Sep 05, 2012

Teardown of a cheap rotary encoder

For my humidor controller project I recently ordered cheap Chinese rotary encoders via eBay. Before I used the Noble RE0124PVB17, but they were out of stock just as I needed more. As I didn't want to spend much more than 50ct per piece I had to turn eBay for cheap …

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