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I'm having a problem with a really simple program that is designed to flash an LED on each of four output channels on an 08M2: main: high c.0,c.1,c.2,c.4 pause 200 low c.0,c.1,c.2,c.4 pause 2000 goto main That's all the code there is -- similar to the example in...

I've been using Cree XP-E series LEDs as strobes in my model RC aircraft for some years now. Because of the very short duration of the 'on' mode I've been using them without heatsinks with no problems. Running them off 5v supply I've been using series resistors ranging from 2 ohms to 5.6 ohms...

I've been making circuits, mainly PICAXE, for many years now and have always left the flux from my resin-cored solder wire on the PCB, as I had read on the internet that it's safe to do so. But recently I've found that it's causing malfunctions on a couple of my boards, causing adjacent...

It's a while since I've used my PICAXE Editor 6.0.9.3, and I'm aware I've had a few Windows 10 updates since the last time. Today when I tried to program a new board I got the 'Can't open port COM4' message. When I checked in Windows Device Manager I saw that 'AXE027 PICAXE USB' has a ...

In the old editor I used to slow down the program execution when in simulation mode, so that I could see command execution clearly. With PE6 I can't figure out how to do this, and it whizzes through the program so fast I can't see which sub-routines it's executing or skipping. How can I slow...

I've got a couple of 08M2 circuits acting as light detectors to switch battery-powered lights on at dusk. I use a simple loop to check the light level, and am just wondering if there's a more efficient code that would reduce the 08M2's current drain while it's waiting for dusk. Would...

I'm transferring my PICAXE editor and files to my laptop, having successfully used them on my desktop PC for many years. Editor and files are no problem, but I'm stumped on how to get my AXE027 USB cable running on my laptop. My laptop is running Windows 10, fully up to date. I've been on the...

In an earlier thread I was looking for a way to monitor the on/off state of two separate pairs of LEDs using a completely independent circuit which will switch another set of LEDs when a particular two of the monitored ones are on. My previous efforts have been frustrated by glitches that I'm...

I've build several circuits using the ULN2803 Darlington array to switch my output devices -- usually high power LEDs. The LEDs alongwith their resistors have been connected as per the circuit shown on page 7 of part 3 of the manual, "Standard Circuits 2 - Using a Darlington Driver IC", which...

I've read several times that solder flux left on a joint, be it wire-to-wire or wire-to-PCB, can eventually cause corrosion. With that in mind I bought a flux-remover pen, but I'm not really happy with the way it works -- it just can't get into all the nooks and crannies on my boards. Is...

I have a situation where I want to detect when two independent (though with a common ground) LEDs are lit and, if so, switch on another array of LEDs. I know I can do it with an 08M2, but is there a simple electronic device that will switch, like a simple transistor does, only on receipt of two...

A couple of weeks ago I asked for help with a circuit using a 14M2 in this thread. Taking the advice offered, I moved my switch inputs, and my servo outputs, so they no longer shared the serial-in and serial-out pins with the programming circuit; and my prototype worked exactly as expected...

Having sorted the issue I raised in my previous post about a 14M2, I now have a circuit board with a jumper so that pin c.5 can be switched for programming or running. But my circuit is still not behaving as I expect. Two simple on/off toggle switches are connected to pins c.3 and c.5 (the...

This is my first time using a 14M2 -- all my programming to date has been with the 08M2 -- and I've got a verification error when trying to download my program to it using Editor 6.0.8.11:- Verification error - 0x00 transmitted but 0xFFFFFFF0 received My 14M2 is interfacing directly...

I have a very simple program which moves a standard RC servo slowly from one resting position to another at the throw of a switch; switch closed = full right; switch open = full left. Each time the servo is moved the program is supposed to save its position (1 = right; 2 = left) into the EEPROM...

I plan to use ASSR-1611 solid-state relays with a PICAXE 08M2. Do I need a 1k (or any other value) resistor between the 08M2 output and the ASSR-1611 input, as per the standard transistor interface in the PICAXE manual; or can I make a direct connection as per the standard Darlington driver...

I'm familiar with the standard transistor and MOSFET interfaces for switching DC current, but I'd like to know if there's a simple equivalent -- other than a mechanical relay -- that can switch DC current. I'm looking at a model railway application, and would need to switch approx 16v AC at up...

Some short time ago inglewoodpete posted a basic program to fade an LED on/off to look like a pulsating beacon light, in response to a query of mine. It basically loops, using PWMDUTY and incrementing the duty cycle each time. It starts with "PWMOUT c.2,63,0" and then increments up to...

I used to mount my 08M2 devices in a socket, so that I could remove them for programming on my PICAXE proto board (and because I was scared of damaging them while soldering!), but for some while now I've been mounting them direct to my project PCBs and adding a programming socket and a jumper...

I wish to operate a pair of standard servos (operating some points on a model railway layout) in accordance with the inputs from two simple on/off toggle switches. There are three required combinations of the two servo positions -- one pulling while the other is pushing, one pushing while the...