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I am very familiar with calculating resistor values and finding current through an LED under normal conditions. However, I have a circuit I am working on that appears to be out of the normal... Here is my situation, I have groups of 4 LEDs in series (Warm White at 3.0V) attached to 12V. Under...

I am wanting/trying to control some 12VDC LEDs via PWM using a PICAXE 14M2. What is the best method to do this. Working with PWM and LEDs is not new to me but trying to control them at higher voltages is new for me.

I was needing a solution where I could datalog some information to an SD card from my PICAXE project and ran across an old thread entitled "Datalogging with uALFAT and Hi2c". I thought that this would be the best way to go but found that they no longer supported the uALFAT-TF. So I went ahead...

I know the following question will sound stupid to pretty much everyone. But I have run across a situation that has made it inconvenient for me to work on several of my projects. I understand and would rather use the PICAXE Programming Software to program my chips. However I have a couple of...

I have a problem with some math operations. I understand what is going on, but I dont know how to overcome the problem. I have an ADC value that I need to convert to a corresponding weight. In the real world the formula for this is: ADC / 1.023 = Weight I know that I can not work with...

For some time now I have had several projects that I would like to attempt, all of which could greatly benefit from some sort of simulated flame. As time goes on, I keep coming up with more ideas with no idea of how to do it. I have been looking online for any kind of information on this topic...

I would like some help writing to EEPROM. Datalogging is new to me and I have never worked with EEPROM before. When I looked at the code it seemed pretty simple. It would take a data "byte" stored in a symbol labeled info (b4) and through the sub-procedures read/write to EEPROM. As I began...

Ok I "think" that what I want to do is possible. I would like to create a circuit where if I press a button then it starts a 15 second timer. This part is easy and was completed in about two minuets. Where I came to the problem (or question) is that I would like to be able to extend the time of...

I have a problem that i never thought of until now. I was working on a circuit and had my little cabinet that organized my chips sitting next to me. My one year old daughter reached for the cabinet and accidently dumped it on the floor. I would like to know how I can decifer which chip is...

I am working on a circuit for my job that will hopefully get a reading from a "General Purpose Temperature Probe" (Analog Devices AC2626) which I will then like to convert to a calculated temperature and then displayed on an LCD. I would also like the data to be logged at 5 minuet intervals for...

Ok here it goes. I have been working on a picaxe project and I have found that using a 28X1 I can do exactly what I want (the DIG command is only valid with "X1" chips). However a 28X1 is actually a lot of overkill for what I am wanting to do. Below is the code that I can use with the 28X1...

I am working on a project and most of my code is now complete. I am stuck on just one part of it. At the press of a button (Start) I want to be able to start some sort of timer (most likey two seperate timers). There will be two more inputs, which each in turn needs to stop the associatied timer...