Search results

Hi All, I was considering building myself a logic analyzer but I figured I should ask a few questions first. Like I'm not entirely sure what one does. At the moment I have a device in mind that has a probe that will simply store the value (1 or 0) of that probe for X number of samples when...

Hi All, I'm looking to built a home multiroom sound system and was just wondering a few things, firstly does anyone know where I can buy some small amplifier modules, only like 30W would do, I've seen you can get a decent 7W one from maplin and those Kemo ones, although the Kemo one produce...

Hi, I have an amp I took out of a set of labtec speakers, these worked fine so I unsoldered the power dc jack and hard wired them to some power. At this point is still worked, then I took off the switch, it had 6 pins arranged in 2 columns and 3 rows and wasn't easily unsoldered so I got some...

Hi All, Sorry this isn't about PICAXEs but this is the best electronics forum I know. Basically I bought an 18W Audio Amplifier made by Kemo (see here) And I have also got 2 x 25W speakers (rated at 12W) and a 30W Speaker (rated at 18W). The circuit is correctly connected, as stated in the...

Hi, I'm currently building a PCB and on it will be a 433mhz and transmitter module. I was just wondering if there was anything special about the pcb, any requirements? Like chip antennas don't work as well with a ground plate, thinks like that. Thanks, George. EDIT: Just out of interest will...

Hi All, im having some trouble with a project I'm making, it's basically an AV selector, 4 x Audio and Video in, 1 x Audio in and 1 x PC Audio in (5.1 green, orange and black). The signals are selected using MAX 4614 and a decade counter and ultimately end up into 4 channels, Left, Right and...

Hi all, I've had a PCB fabricated and one of the features on the board is an audio input selector. This works with a PICAXE connected to a decade counter which counts to the correct input. Each input (a 3.5mm audio connector) has L, R and GND which comes out and joins to 3 lines, L, R and GND...

Hi all, I'm trying to program my PICAXE under mac for the first time but have some errors in MacAXEpad. I have the cable installed but it is installed as tty.PL2303-0000101D so I have to change axepad.ini This works fine as I can get the chips firmware but when I click program I get verification...

Hi all, I was wondering if it's possible to write code in PICAXE basic as normal but instead of downloading to a PICAXE, download it to the actual PIC, ie without the PICAXE firmware? Because I need to buy some PICAXE 20X2 but can't find where to buy them, so I was hoping I could buy the...

Hi, Im having real difficulty getting my head round this so I wondered if someone could clear this up for me. I'm about to have a pcb fabbed and i'm thinking about through hole soldering...? Surface mount is easy as there's one side of pads so its easy to know where to solder, but through hole...

Hi All, Im making a pcb that basically takes 7 audio inputs (3 phono, 3 jack and 1 ipod...in stereo) and with the use of the DS1805 and a decade counter and loads o' transistors selects one and outputs it with volume control. Most of the board uses 0.1 inch traces but is this alright for audio...

Hu, I have a 5V Voltage regualtor (mc78ld5acp to be precise) and I was wondering how to use it to convert voltages. I've seen such voltage reguators used in 5V to 3.3V circuits with the 2 capacitors, but how can I use mine to convert 12V to 5V (without a potential divider circuit) Do the...

Hi All, I have been looking at the TX1 and RX4 by quasar for wireless communication, and after watching this video on youtube: http://www.youtube.com/watch?v=2dQ5sB8Kn6E a lot seemed to make sense. I currently have the 2 modules setup in a breadboard with 2 PICAXE 08Ms but there's a weird thing...

Hi, I came across a script last year that showed 3 leds fading in and out using pwm, cool effect. But on the 40X2 there is only 2 PWM pins and I won't mind fading 3 lights. So what are the Hpwm pins? Can I fade lights with them? I don't have the fading light script but i'll have a look and see...

Hi All, I've been looking intently into buying the Quasar TX1 and RX2 but buying them is proving difficult. I can get a TX1 very cheap from ebay but the minimum order on quasar is £20 and im not buying enough on farnell to want to pay such posting costs. So does anyone know either where else I...

Hi, I've created a PICAXE X2 Library for CadSoft EAGLE. It's a copy of the PICAXE-3.lbr but with only 20,28 and 40 pin DILS and the new configurations for devices, 20X2, 28X2 and 40X2. Enjoy. NOTE: It's a called picaxeX2.dsn as you can't upload a .lbr file so change it to picaxeX2.lbr after...

Does anyone know if there's an EAGLE library for the X2 Parts yet? It'd be great if anyone has created one. George

What is the opposite of a transisitor? ie a transistor makes the circuit with an input but what sort of thing breaks the circuit with an input. I have a handheld device that is run on batteries and I want it to run off the power source when it is plugged into a dock, so the dock's power will run...

Hi all, I have a DS1807 that Ive been trying to interface with but have no luck. I've searched the forum and the datasheet but have gained little help. I've started by addressing it but I don't know how much of this information is correct, except the address which i got from the datasheet...

Hi all, Ive been getting to grips with the iButton and I have all the probe setup and Ive reached a point where it reads the sn and puts in in b6 and then the ligh on the probe comes on. But my serial number for the 2 ibuttons I have are both $01? I was wondering how I can convert the number it...