Archive for the "electronics" Category

Quickie Hack: Turn Your Bicycle Into A Party Machine

I was looking for a way to play tunes while biking the other day, and was too lazy to get out the CAD program and design something to print on my RepRap. Here’s a dirt cheap & quick hack to get some decent quality sound while riding your bike. All you need is 4 zip ties: […]

TL-WR703N: Attaching USB Serial Adapters – FTDI/CP2102/PL2303/CH340G

Although the TL-WR703N has a built in UART, as I have shown in my previous article, it’s rather difficult to access, and is useful as a serial console in OpenWrt. For the support of your own apps, it is far more convenient to simply plug in a cheap USB to serial adapter — this can be […]

RepRap: Printrboard Surgery

After a hiatus of a couple of years, I’m finally starting to get back into 3D printing. One of my Printrboards got messed up when some wires on my hot end shorted. The hot end temperature was no longer reading correctly. Since my other Printrboards all work correctly, I knew that the problem was not […]

Arduino 1.0.5-r2 for AT90USB1286 and Printrboard

It’s been a few years since I hacked together the copy of Arduino-0022 that’s been floating around the web, which lets you compile and automatically upload Arduino code to an AT90USB1286. This made it a lot easier to develop Arduino code for the AT90USB1286, and in particular to easily modify the Marlin firmware for the […]

How to Update the Firmware on a USBasp V2.0

If you buy a cheap USBasp V2.0 ICSP programmer on eBay, chances are, avrdude will give you the following warning message: avrdude: warning: cannot set sck period. please check for usbasp firmware update. While it’s just a warning message, it’s still a constant irritant. To get rid of this warning, you must update the firmware […]

Interfacing a TFT_320QVT LCD/Touchscreen/SD to a Teensy 3.0

I’m working on a project which needs a touchscreen LCD. After searching eBay for a while, I noticed that many vendors were selling basically the same 3.2″ 320×240 TFT with resistive touchscreen and SD card reader. Though there were slight variations in the silkscreens, they all had the same model number – TFT_320QVT. I bought […]

ITEAD Studio IBOX Part 2: Booting up Debian Linux 7.0

My IBOX came shipped with Android TV A20 pre-loaded in the NAND flash. I plugged a Microsoft keyboard and mouse into the USB ports, and used my Panasonic plasma TV as a HDMI display.  The boot screen is a bit confusing, because it implies that the device has WLAN support: You can ignore the big […]

ITEAD Studio IBOX – Part 1: First Look

ITEAD Studio recently contacted me to let me know that they’re going to display my Lampduino project at the Shenzhen Makerfaire. I thought that was a pretty cool idea, and am honored to hear that. They also asked if I wanted to test out their IBOX mini multifunction single board computer, which is currently in its final […]

Noritake 24×6 Character VFD Module

I’ve always thought VFDs were pretty cool. They used to be the rage in high end consumer electronics. Back in the mid 70′s, I built a VFD alarm clock. Recently, I got my hands on a modern VFD module to play with. The Noritake-itron SCK-Y100-24063-N14 is a very flexible 24×6 character VFD module in the same […]

TL-WR703N: Adding Storage Space – EXTROOT

Once you have your TL-WR703N running OpenWrt, you’ll find that it doesn’t have a lot of free space for adding your own files. Here is the output from df from after installing attitude-adjustment: root@OpenWrt:/# df -h Filesystem Size Used Available Use% Mounted on rootfs 1.1M 352.0K 736.0K 32% / /dev/root 2.0M 2.0M 0 100% /rom […]