Eagle, by default, puts all the components on the PCB’s top layer, usually displayed with red color: Choose the Mirror tool: and click on your component: Eagle will move it on the bottom layer, displayed with the blu color:
This is the last post in this tutorial and it’s about an Arduino sketch that receives a text string from the serial port and displays it on your display with a scrolling effect.
In my recent review about the Li-po Rider module, I wrote that a little problem was the absence of a chip that could monitor the state of charge (SoC) of the connected battery. You can find several IC for that function; I chose the MAX17043 by Maxim, for the following interesting features: [checklist] it doesn’t require an external sense resistor…
I’ve just published by Arduino library to use the MAX17043; this IC can monitor voltage and state of charge of a single cell Li+ battery…
After having published my previous tutorial, some users wrote me asking a way to send bigger images using Arduino and the ethernet shield. The guys who develop EtherCard library are rewriting the way it handles TCP packets, in the meantime you can get around this problem including in your HTML page references to images hosted by other websites:…
LEDs with high brightness (high power LEDs) offer a lumens / watt ratio very higher than traditional incandescent or fuorescent lamps: This type of LED has to be driven by a constant current source: 3W LEDs have a nominal current value of 350mA. I designed a module to drive a single 3W LED and to change…
Eurocircuits has published a useful online tool to validate your PCB projects: PCB Visualizer: After having uploaded your files (it can handle Gerber or Eagle v.6 format) you can check if everything is ok: At the moment, the tool is available if you choose one of the following PCB services: Eurocircuits : www.eurocircuits.com Elektor : www.elektorpcbservice.com element 14…
I’m working on a project that will be powered by a Li-Po battery, so I was looking for a power module that was able to charge the battery and to supply 5V to my circuit. Seeed Studio sells a very interesting module, named Li-po Rider; its main features are: [checklist] supports a single cell Lithium Polymer battery can charge the…
Microchip has just expanded its K50 line of the PIC18 family with the new version of two widely used PIC microcontrollers, 18F2550 and 18F4550, that now add a “K” in their names: http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en558862 http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en558861 The most interesting feature – these microcontrollers are often used as usb devices – is the ability to use an RC internal oscillator also for USB…
In my previous tutorial, you learned how to display a fixed text, coded and saved in Arduino’s program memory, on your display. Now you’re going to learn how to display dynamic text…