I made a volt meter! All I have is a jumper wire poked into the analog pin 0 receptacle. At samples 3 and 4 I have touched the end of the wire, bringing the voltage to ground. Pretty exciting! The code is below. I’m working towards building my lightning detector. I have a simple coherer, [...]
Some interesting links I’ve known about… arduino tagged items in makezine blog related projects: processing, wiring, fritzing
I had the idea (during the recent lightning storms) to record the rate of lightning strikes. There were a couple of ways to do it, I think detect the radio from the lightning. Might be able to get the direction with this, if the adc is fast enough. just us a mic to pick up [...]
Well, I don’t know that much c++, the last time I worked with it was over a decade ago. So, I’m not to surprised that I get an error like this: In function ‘void loop()’: error: ISO C++ forbids comparison between pointer and integer I’m trying to print my string one character at a time, [...]
It turns out that having your code output stuff to a terminal is incredibly simple. The code below will send the strings “str1″ etcetera out to the serial terminal, which is displayed in the little box at the bottom of the Arduino development environment. Simply press the “serial monitor” button at the top of the [...]
I would like to be able to see what my code is doing. If it could print out to the terminal, that would great. Is there a terminal environment for the arduino? I guess what I really want is an emulator so that I can test my code and see what it is doing. I [...]
I’ve got another idea for how the blinking can work. It would be user specific, thought it might not be that different between users. A “reader”, a person who wants to read the numbers from the thing, would calibrate the output to how long it takes them to count to 1o. So they would press [...]
A few things I’m trying to get right here: the number is correctly binked out. that it is easy/pleasant to read the number (requires timing of the blinks to be comfortable) works for an arbitrary number. I went from the largest digit to the smallest. I’m thinking I should probably do it the other way [...]
Here is one idea for how to blink out numbers. the blips should actually be a full line high, the blinks are also a full line high. The “end of number” indicator is only half height, I plan to use the PWM feature for that.
some further ideas: output primes (thanks Larne!) somehow output what the analog input is doing (it’s floating, so presumably doing something) morse code a message a fibonacci sequence blinker (but do base 10 blinks somehow, so we don’t have to count to 1000′s) base 10 counting trainer. it blinks a sequence that is some number, [...]
