Recent content by Denzel

Hey guys, hoping I can have little bit of advice, I am hoping to use a current controlled air flow valve (Valve: PVQ 33 6G 16 01) and control it with a digital output. The current range is 0 to 330 mA Voltage is 12V I have 16 of the valves so I am hoping / need to run them via SPI or I2C...

The bluetooth module I'm currently working with seems to convert binary to hex when I use serrout with it; I.e. sending 255 is received at the pc terminal side as 323535 ('2' being 32, 5 being 35 ASCII) How can I convert it back programatically? I am trying to send values between 0-255 to the...

Can an 08M sport a T9600 Baud? If not, which is the next size up that can? M2 X1 X2 parts only? Cannot find it in the Manual Trying to do a bit of Bluetooth comm with these puppies http://www.mdfly.com/index.php?main_page=product_info&products_id=63

I'm trying to measure the distance between two devices, normally, I would use an ultrasonic pair or similar but my situation is this. I have 10 objects that I need to locate in a 3D plane. I want to use 3 receivers or similar to triangulate the 3D position of each object, each of which can be...

I have a set of Pinpoint Gyro's: http://www.pinpoint-gyro.com/wp-content/uploads/2010/06/PinPoint-CRM200-00-0100-132-Rev1.pdf That I am trying to measure an angle of displacement from a set angle. If I have angular velocity how do I convert this into an angle (degrees) do I simply use omega =...

I know this forum is intended for Picaxe discussion primarily but I know many experienced members will have a lot of knowledge about metal lathes. I have just dug out my grandfathers Emco compact 8 metal Lathe and the AC motor (240vac 0.65kw) is having trouble getting going. When I turn it on...

Hi everyone, My names Liam Ellis, im an 18 year old student at Hutt Valley High School and Ive just got into the finals for the 2009 Bright Sparks competition with two of my projects. Having come first in this competition two years running I am extatic to have reached the finals for a third time...

I am in the middle of adding an alert to my current project, that is, a simple loud three tone beep when a trigger occurs. I have a small 8ohm speaker set up connected to stereo headhone jack pins so that if there are no headphones connected, the sound signal will goto the speakers, if there...

I have a project im in the middle of where I am recording the analogue value of 24 linear pots. I am measuring the shape of an object as it changes so I need to record the value of my 24 pots to an EEPROM every say 4-8 seconds. This means sending 24 values + a time value to an EEPROM. Once the...

I need to measure the analogue input from 21 potentiometers (10k) and Im after any suggestions as to how this is possible. Ive considered using 7 picaxe 08ms (each with 3 adc pins) and a 28X that links them all up, and I can do this, I have done it before with 5 08ms and an 18X but its messy...

I am using a 1.2 Ah 12v sla bettery to power a submarine im working on to survey river / lake beds. I need to get a 12v supply for pumps/motors/lights etc and a 3.5/5v logic supply. I have never done this before... Ive always used two seperate power supplies, Could someone guide me in the...

I am trying to control a motor (forward and reverse) using an L293D but its going too fast for my application (knitting machine.... yes, i said knitting). Im using the 14m so there is only one PWM pin I can use. Im still trying to get my head around HPWM and I came across this post...

I have been tring to get a stepper motor going from a circuit out of David Lincoln's "Experiments in mechatronics using the picaxe controllers" The circuit uses an L293d to supply the two coils with 12v I have made the circuit up exact to the diagram and the code is exactly the same but the...

My project the VIPER uses a hydrocarbon gas sensor to detect LPG. http://www.jaycar.co.nz/products_uploaded/RS5610.pdf The problem is, when reading the analog data from a Picaxe the data is between 0 and 255 naturally. Do you know how I could convert this reading into ppm? So I can make a...

This is something ive been wanting to try for a while. To use an optical laser mouse (no balls) and a picaxe for accurate position sensing. Most mice these days are usb i.e. they contain a chip that converts rs232 to Usb. which can be ripped out I guess but I still see mice with the PS/2...