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Hello, Just after some help if possible, Im making a small project circuit which uses a Cree CXA25 LED. 36v, 1.2A. I am supplying the power from a 36v power supply that I had spare, although its not regulated. I was wondering what circuit should I put in place to protect the LED. I read that...

Sorry if this has been covered already. I'm helping with a semi professional early teenage football team, and I was looking at possibly buying a kit of GPS trackers for field position monitoring and recording. Unfortunately, the cost of these system is way way beyond my budget. I was therefore...

Morning All, I'm going to be using some IR sensors to input in to an 18M2. These are pre built devices which output around 3v when activated. What type of circuit do I need to use such an input device? Do I need any drop down resistors or anything? Thanks Russ

Apologies for the off topic post, but I know there some very knowlegable people in this forum that might know the answer. Do any of you know much about CMOS sensor ICs. I am having to do some thermal calculation on a system that has one of this implimented. Its a high end CMOS sensor, that...

Having recently had my shed broken in to, I am on a mission to secure it the best way I can. Obviously one is a shed alarm, however i want to modify this so that if the alarm is triggered, a small alarms in my bedroom will also go off to alert me of the activity. The shed is right up the top of...

Good day to all, Im looking to design a rig that allows me text the thermal capabilities of materials (mainly metals). I,d like to accurately control the heat source so I can calculate the power consumption for heat calculations. I would also need to measure the heatsource. I wounding if...

Good Day to All, I have a general Elec Question. What would cause a resistor to blow? I have a makita battery charger, and it stopped charging. I opened it up to find one of the resistors were blow, with burnt residue on the PCB. I tried to decipher what the resistor value and think I...

Sorry for another none AXE related question, but does anyone have any knowledge on the minimum acceptable distance between the edge of a multi-layer PCB and a case wall (aluminium)?

Can anyone help in how I would add a volume control to this circuit I bought a amp module that uses this IC, but could really do with volume control on it

For quite some time now, I have turned to this forum for help on electronics projects, both with and without Picaxe at the heart. Ive always had constructive and valuable advice and support, for which I am very grateful It is highly unlikely I will ever be at a level to give back knowledge and...

Some time ago, I investigated (via this forum) the possibility of PWM controlling a 240v LED bulb, in the end I decide to scrap the idea as I was not competent in messing with 240v So Im not thinking of just using a 12v AC bulb instead. My question is, is it difficult to control 12v AC via PWM...

This is going to sound crazy, but its a genuine question. If you have say 50Kw of electrical power that you actually need to get rid off, how would you do it Maybe run it through some very high power resistors, in to a massive heat exchange and out to ambient?

Is Pulsout just as good as PWM In regards to dimming control of LEDs

Good Day All, I want to be able to turn on a 240v supply (via a relay) upon detection of an audio signal. Ive dont the relay side of things before, so all good on that. But how would I best doing the audio detection side. Would this be done via an ADC input? Cheers Rusty

Hi Everyone, Ive never really adventured down the route of SMD components, but I want to build so more compact circuits. I plan to to turn a 12v 1A load on with a SMD MOSFET N-Channel 800V 1.8A DPAK Transistor. Going off the "Interfacing Circuits" manual of Picaxe, I need a 10k pull down...

Hello, I am going to experiment with RF transmitters / receivers, but pretty new to this I was wonder if you can pair these up so that there is no cross communication with other devices maybe in the vicinity? Cheers Rusty

Good Evening All, hope everyone is well Been meaning to look at this project for a while, but its been heightend due to had robbery at my neighbours last night. I was to design a few trap systems for some vunerable places around my garden. Such as fences, garages, etc. I want to know what...

Goooooooood Evening everyone, Hope all are well. I was wondering if there are many experienced potters here (not the stuff you smoke, or plant! ;)). I want to potting a couple of circuit boards, to protect from humidity moisture, etc. The boards carry quite a few video signaling. So I was...

Good Evening everyone, This is off Picaxe topic, but Im just upgrading all the wiring in my garage (it was all very old and not very safe). I have unfortunately found that there seems to be no earth connection in the garage at all :eek::eek: The cable leading from the house to the garage is...

Hi All, Im looking for some suggestions on ways to measure the passing of an object through a gap of say 1m. However, I want to so that it can tell which direction that object has traveled. The gap between the sensors is to be no more than 110mm apart, but ideally would be 30mm aprat. My...