A new open source hardware project every month
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Ytsirk analyzed the remote control protocol from a LED license plate frame using the USB IR Toy. Also check out part I and part II that introduce the hardware. We can’t wait for the next installment that covers reprogramming the marquee with a battery powered IR Toy, it sounds like there’s a lot of potential mischief fun to be had.
Tags: LED, plate frames, remote control
There have been multiple reports of dead MODE LEDs in Bus Pirate v3, preorder 2. The cause seems to be a dirty contact on the LED. Most can be repaired by reheating the joint, and possibly adding a bit more solder.
In response to this problem, Seeed Studio has changed LED suppliers. We also implemented a visual LED inspection step to the self-test in firmware v3.6 and later. If you have a dead LED and would like replacement parts, please contact us.
A note from Seeed follows.
Here’s a new project we’d like to develop openly, like the recent logic analyzer board . This rough sketch shows a 48 channel LED controller with an ethernet interface. Our primary goals are:
The networked LED controller would use the 24FJ64GA002-SO as the main microcontroller, and an ENC28J60 for the network connection. A 25AA02E48 EEPROM would hold settings and a unique MAC address so multiple boards can share the same network.
The LEDs would be driven by three TI TLC5940s, each with 16 channels of 10bit PWM. The current of the LEDs is set with a single resistor, ideally this would be done with a digital pot for easy network configuration. This chip is cascadable, so an expansion header would make it possible to stack extra TLC5940s on top of the base.
The overview continues below. We’re eager to hear your suggestions here, or in the forum.
Read the rest of this entry »
Tags: blinken LEDs, ethernet, ideas, LED
Halloween is only a few days away. We’re getting into the spirit by building a remote control color changing pumpkin. Channel buttons 0-8 on the remote toggle the colors of the rainbow. Button 9 activates an ‘angry pumpkin’ mode that flashes a scary red strobe for a few seconds.
It uses a minimal PIC 18F2550 circuit that decodes the remote control signals and drives a ShiftBrite color changing LED module. The F2550 is a USB PIC with a USB bootloader, so it’s technically a USB upgradable pumpkin too.
