Recent content by lanternfish

I have posted some details and video of my completed Big FO Smoke Machine project over on the Completed Projects Forum if anyone is interested.

At my former workplace I was tasked with modifying three large smoke machines so that they could be run via DMX. These machines were originally used as part of a theft/robbery prevention system in a jewellery shop. A previous employee had attempted to DMX them but had only succeeded in...

Hi all Have searched high and low but can't seem to find a solution to this problem. Input: 0V to 1V analog signal. Output: 0 -20mA current (approx 5V). :Linearity not an issue at present. I need a analog solution :mad: Can't get my head around transconductance op-amps.:confused: Any...

The idea for this came from various questions regarding HDD indicators. Many of the projects I have seen use bar-type LED's; the more activity the more LED's lit. I though this was a bit boring. I then considered the Rubik Cube. Now rather than solve a scrambled cube the CubiX HDD activity...

Hi all While I wait before I can get my electronics workshop up and running again I am frequently coming up with project ideas that I can only develop theoretically. So ... Is their any interest in having these untested ideas (apart from simulating in the PE) put up in the forum for others to...

Thought this may be of interest to the group: Basic specs: Display 2.8″ Color TFT LCD Display Resolution 320×240 Display Color 65K Analog bandwidth 0 - 1MHz Max sample rate 1Msps 12Bits Sample memory depth 4096 Point Horizontal sensitivity 1uS/Div～10S/Div (1-2-5 Step) Horizontal...

Have read a few threads where users are trying for lower PWM frequencies than are 'easily' programmed in standard PICAXE Basic (hpwm etc.) And then I stumbled on this hardware approach over on letsmakerobots.com

This one is for the gurus out there who have used the hspi feature of the X1/X2 pixies. I have read a few threads and datasheets on spi and can't seem to find an answer to the following question. Q. What is the idle state for the SPI Data out line? Any help will be much appreciated. And no...

A recent edition of Silicon Chip contains a PIC controlled GPS Car Trip Meter project (sorry, I can't remeber the PIC id). What is interesting about this project is that the GPS module is 3V, the PIC 5V (why didn't they just use a 3V PIC?) and to interface the serial from the GPS to the PIC...

As discussed in a previous thread, here is a description using AT commands to communicate with a Nokia 6100 cellphone. The Nokia 6100 has two serial protocol buses available for interfacing - M-Bus and F-Bus. M-Bus is a bi-directional bus having a combined Rx/TX line. F-Bus, on the other hand...

A question for the more knowledgeable. The Microchip datasheets for the 16F886 (28X1) and the 18F2520 (28X2) seem to indicate that they can operate at 3 (3.3) volts. Is this correct or have I read the datasheets wrong? Cheers

Hi everyone. Does anyone know of an Ultrasonic Rangefinder module that can measure to 20m? Have searched forum and some very good info on range finding, just need a module if one is available. Cheers

Stupid mistake has just killed my GPS to SMS rocket locater and all the smoketrons escaped! While preparing the enclosure for this project I accidently placed the GPS board & PICAXE pcb onto the (yet to be insatlled) groundplane for the active antenna. At some point I must have operated the...

I have tried to use Jeremy Leach's 32-bit Math 'Virtual CPU' code (http://www.picaxeforum.co.uk/showthread.php?t=10165&highlight=32-bit+maths) to no avail. It always results in an "ERROR 2" message, which seems to be a divide by zero error. Lines 260 - 264 appear to be store the operand values...

Having searched hig and low in the forums, I am unable to find a good description for how to tackle double integer maths with the PICAXE. The problem I have is converting radians to degrees. Now, the usual formula is: degrees = radians * 180 / pi. That part is easy. In my application the...