Recent content by tobyw

Hi Technical -thanks. I spotted that after I posted. show: goes back to main so those lines are never processed. So it IS ok to do last = pin3? I wasn't sure if it allowed that. I changed the goto to a go sub, and now last is getting populated, and I can get this working fine on breadboard...

Soldering a resistor between serial in and ground removed the problem of it 'hanging' on the first LED...but it's still rather buggy. Here are some pictures to show what I did.. Without resistor...marked for emergency drill points... forgive the messy solder everywhere...I unsoldered and...

Hi all I have a simple circuit with an 08m2 flashing 3 LEDs in sequence. It works fine on breadboard, using a small programmer breakout I etched myself (with 22k and 10k resistors plus stereo jack) slotted into the breadboard, with the LEDs connected to the pins on the breakout board. Then I...

Hello all I've had some fun using bought transmitters receiver pairs to get two picaxes communicate. But I'd really like to try and make my own transmitter and receiver - but I'm struggling to find information to help. I wonder if anyone can help with a few questions? 1. Is it a realistic...

After a lot of breadboard projects..I want to start making more permanent circuits. I need to decide on a soldering iron. I'm confused by the fact that I know too much heat can damage the picaxe..and other ICs and components. But other things I have read say if the iron is too underpowered it...

Has anyone used one of these by any chance? Humirel Humidity Module Based on HF3223 According to the datasheet, it outputs a frequency corresponding to the humidity. The calculation if gives for the frequency is 9740 - 18*rh I am running some code as follows setreq m8 count 1,1000,w0 debug...

I took this screen out of a reasonably new Hewlett Packard printer. I would have no idea to use it....but I thought there might be someone here who could put it to use. Anyone interested? If so, let me know, and its yours (assuming you don't want it posting to Outer Mongolia..)

Hello all I'm using a MAX7219 LED/7 segment driver with a 18X. When I download the program to the chip, it initialises the MAX7219 fine, and everything works great. But if I disconnect the battery, and then reconnect it, the seven segments go blank, and nothing happens. It looks like the...

I salvaged some motors from a printer and they don't run very fast off a 5 volt battery.... so I thought hey maybe I should connect them up using the mains adapter which came with the printer - which is marked as 32V outputting 1300mA Well, anything above a 9V battery makes me think I will...

I am really struggling to find a basic guide to transistors which puts it in words I can understand. I am really hoping someone here can explain it more clearly and simply! Q1. What is it which switches a transistor on? Voltage or current - I understood it to be voltage, but I also see things...

Ok Here is my code and the debug vals... I have a 1.9k resistor connecting the trig and echo pins on the HC-SR04, and a jumper wire between the trigger pin and pin 5 (input 2) of my 08M The value of w2(calcd) starts out at 8 when pointing directly up at the ceiling. If I place my palm...

Hello I have been trying to interface this ultrasonic distance finder module with a PICAXE 18x I found two helpful code examples, and they both seem to do the actual sensing the same way. My code is symbol trigger = 3 symbol echo = 6 symbol range = w1 main: pulsout trigger, 2 pulsin...

I got a bit excited and bought an accelerometer IC from RS without really checking what I was getting. When it arrived, it turned out to be almost microscopic! Here is the link MMA7361LCT So not exactly suitable for a breadboard. I was thinking maybe it would be possible to create my own...