Member Since: September 7, 2010

Country: United States

A walk-through of building what turned out to be a complicated prop.

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We all know that women are not only a minority in technical fields, but are often not encouraged to go into such fields. Here are a few ways to encourage and support the girls/women in our lives who are interested in technical fields.

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SD Cards and Writing Images

June 4, 2015

How to upload images to an SD card for Raspberry Pi, PCDuino, or your favorite SBC.

Installing an Arduino Bootloader

December 4, 2013

This tutorial will teach you what a bootloader is, why you would need to install/reinstall it, and go over the process of doing so.

How to Use a Breadboard

May 14, 2013

Welcome to the wonderful world of breadboards. Here we will learn what a breadboard is and how to use one to build your very first circuit.
  • A and C are the anode and cathode of the LED. While a pulldown resistor is not needed for LEDs a current limiting resisitor is. Usually a 330 ohm resistor is used. which should limit the current to 5-20mA depending on the LED forward voltage and the VCC being used. With 10k, I’m guessing your LED is very dim if you can see it at all. If you want to control the LED from your microconroller you can connect either C or A to an output and when you pull that pin low or high respectively the LED should turn on. As for B1 and B2 those are the 2 sides of the button. Basically when the button is pressed the 2 pins are connected and power flows between them. The standard configuration for a button is to have the microcontroller input on one of the pins and GND on the other. That way when the button is pressed the microcontroller is pulled to ground. You will also want a pullup resistor on the pin connected to the microcontroller so that when the button is not pressed that pin is pulled up and not just floating. If you have any other questions feel free to contact our techsupport team.

  • This board communicates over I2C using a specific address. Unfortunately the Uno only has 1 I2C line (A4 and A5). Some I2C boards do have an option to change the address allowing you 2 or 4 boards on a single I2C lines, but the BMP180 does not have that feature. You might be able to use software I2C if you can find a library to do that. If you are just trying to use 2 different I2C boards with different addresses you just need to connect them both. Keep in mind that most of our I2C boards have pullup resistors on the I2C lines. If you keep adding boards those resistors will be in parallel and the effective pullup will be much less than expected. For this reason we have solder jumpers on our board to disconnect the pullups. If you have 2 or 3 boards this may or may not be an issue, but if you are having problems with multiple boards that you aren’t having with a single board try disconnecting the pullups (make sure to leave 1 set of pullups). If you have any other questions feel free to contact our techsupport team.

  • Looks like this just wasn’t selling well. That may have to do with RCA not being used as much in things anymore. We definitely like to have a combination of different types of boards because you often need the simple boards to use the more complicated ones. We are still selling the jack and feel free to use a service like OSHPark to order a few PCBs.

  • Yes we do. If you look under the documents section the schematic for the board is available as a PDF. We also have the board files available that you can view in Eagle if you’d like to take a look.

  • Fixed!

  • Check back really soon. This is undergoing a small revision and should be available soon.

  • For those wondering about the 2pm wave… Countdown to 2pm MDT

  • You have to wait. We literally have all 3k boards sitting on a table with the same SKU. When a shipper gets your packing list they will pick something up off the table and put it in a box.

  • Someone had to manually flip the switch, my guess it at 10:00:01 you might have beaten them to it.

  • Each board is still available for regular price. The promotion was a new product that was $0.01, when it came time to ship your order our shippers grabbed a random item out of a bin (300 each of those 10 products). <strike>This sale was for a limited time and all 3000 boards are now sold out.</strike> So, no, not a joke, just a very quick sale.

    Edit: Sorry, I was a bit slow on getting updates on this. We held back a bit of stock to account for our system always ending up with backorders. We ended up holding back more than we needed so there should be a few more coming out at 2pm MDT.

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