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I've been experimenting with the code in this thread to modulate a (PWM-derived) 125KHz carrier using the Data Signal Modulator. I've chosen to use the 'MDMin' pin to modulate the data - and this behaves differently on the 14M2 and the 08M2 (aka PIC16(L)F1825 and PIC12(L)F1840) - despite the...

I've been doing some investigation into my Hyundai Tucson's PKES system. The key fob is supposed to be equipped with a 'sleep mode' to defend against Relay Attacks, but I was struggling to demonstrate this. The obvious solution, was to capture the signal from the car door lock, decode it and...

Does anyone know how "Motion Sensing" is being implemented in this car security fob ❓ I have a Picaxe 08M2 repeatedly sending a 125KHz signal, that I cloned from my Hyundai Tucson's door lock. The fob responds with a blast of 433MHz. If I stop sending the signal for more than about 3 minutes...

Most Many UK electricity meters seem to have a (visible) LED, that flashes at a predetermined rate to indicate energy usage. This is separate to the 'Irda'? port that can be used for two way communication with the meter, though in the case of my Landis & Gyr 5235 it is integrated into the same...

If I click "Check for Updates" in Picaxe Editor 6.1.0.0, I get: - I tried to debug this, but the results were inconclusive - lots of redirects, that eventually lead to https://picaxe.com/software/picaxe-editor-6/ I wondered if it was the use of HTTP/2 that's confusing Picaxe Editor ?

I routinely use the TABLE area to store data strings intended for display on an LCD. Each string is marked with a trailing zero byte, so that the Display Routine can find each individual message (a habit I picked up in 1979, on the PDP-11 ;) ) . However, I've recently noticed a slight bug...

What's a Quick Charge Trigger Board, I hear you say :) The Qualcomm Quick Charge protocol is implemented by a variety of 'USB' Chargers and (more interestingly, perhaps) Power Banks. They are intended for 'quickly' charging Mobile phones and Tablets. This is achieved by increasing the voltage...

I know some folk in here use GPS modules for time-keeping purposes, so may be affected ... Story from "The Register" : https://www.theregister.co.uk/2019/02/12/current_gps_epoch_ends/ The Register's story is based on this...

Is there a way to make code copied from the PICAXE Editor (6.1.0.0) (Using "Copy for Forum"), display properly in this 'new' forum software? Previously, this :- if b9 = "0" then b9 = " "...

I have an old project, that I have recently been doing some work on: it's a 14M2-based 'Battery Capacity' tester. Basically, it uses various PWM settings to drive a MOSFET (via a resistor and capacitor) to achieve controlled discharge currents, with the attached cell run-time measured and...

Is the "Serial over Ethernet (Program Picaxe connected to another computer over internet)" feature currently functional? The Help file tells me to use the "Wizard" within Programming Editor, but I can find no "wizard" as such, just a Config. program (which asks me questions I don't know the...

In another thread, there was the following conversation :- I was idly curious, as to the size of this overhead - so set about measuring it. Initially, I used a simple 'Toggle B.1' in a loop, measuring the achieved frequency on a 'scope vs different values of TIMER Preload. The effect...

I have some code running on a 14M2, that is triggering the 'well-known' 2.1Sec Watchdog Reset when running at a clock speed of 31KHz ... even though it doesn't take anything like 2.1 Seconds to execute :confused: This is the code :- setfreq k31...

I know that not all 433MHz RF Receivers are created equal, so when I needed one for my latest project, I made sure I chose a Superhet version, over a TRF design. One of the first ones I found on eBay, was a Hope RFM210LCF-433D-A. Being branded and reasonably priced, this is the one I chose...

In the next phase of my project, I want to trigger two Triacs to control two 1KW heater elements. The elements are physically inter-connected and the centre point is currently used as the Neutral. The elements will be switched on either together, or separately for several minutes at a time...

I just came across this little module on eBay (while researching methods of measuring inductance). It seems to be more of a functionality tester than a precision measuring instrument, but at the price, I had to have one :D EEVblog video review: https://www.youtube.com/watch?v=7Br3L1B80ow An...

I just loaded a source file that I created under PE5 and found it will no longer compile. It does still compile and download using PE5. Is this behaviour configurable in PE6? This code:- bptr = ByteArray W0 = Time / 60 ;Convert Seconds to...

I've never actually used an SSR before - but I'm pretty sure that 'clicking' noises emanating from them, wouldn't be considered normal :confused: The noise stops if the load is disconnected. Anyone know what's going on? (The SSR is being used as part of my 'Fan Heater' control experiments...

I'm embarking on Phase 2 of my project to enhance the temperature control of a Dimplex Oakhurst heater. Phase 1, published HERE makes uses of the heater's Infra Red Remote Control functionality, and is a vast improvement on the in-built mechanical thermostat. However, the Fan - when it is on -...