Crosland

I think the inductor in the OP was trying to self identify as a resistor.

Nice, I've not seen worms mounted low down like that.

I may have jumped the gun :( There's more to this than I thought. I still hope to get something in 5.1.2, but check the release note when it happens.

Not to mention the special foil and magic water https://pwbelectronics.co.uk/images-of-our-products although we should not speak ill of the dead https://www.stereophile.com/content/peter-belt-1930-2017

Thanks to to a tip from one of the other developers I have submitted an easy change which will give support for functions up to 32. This puts the SPROG on a par with the ECoS, which seems sensible as that's the same manufacturer as the decoder. This should be in the next JMRI test release 5.1.2 The DCC specs are gradually catching up with the de-facto standards for far more functions, up to 68. before trying to support those I think some thought will be needed into how to display so many functions. Andrew

They operate faster than a SPROG, which is very fast.

A resistor can have both gold and silver bands since they are both valid multiplier coefficients as well as tolerance. See https://www.digikey.com/en/resources/conversion-calculators/conversion-calculator-resistor-color-code for an example of the resistor colour code. [Edit] Just re-read the thread and Pandora stated as much.

Not always. In fact, I would say resistors with end bulges are in the majority. Every single on on a number of PCBs on my desk in front of me have bulges at the ends. The only definitive proof is to know more about the circuit where it came from.

PM sent.

Model Railway Constructor Gone Railway World Gone Andrew

At first glance it looks like there is currently no support for F29+ in JMRI, for any system (sigh of relief that it's not a SPROG problem), but I could yet be proven wrong, they may be handled differently in different code that I haven't seen yet. I have asked the question of the other developers. Which decoder is involved? Is there any function remapping for these functions, that would allow you to access them, at the expense of other, lower numbered, functions? Andrew

The problem is Functions, not CVs. This sounds like a JMRi issue, as all of the DCC commands are created in the software. I will need to take a look at the code.

Are you certain the bit in CV29 to use the speed table, rather than the Vstart, Vhigh, Vmid CVs, ..., is not set?

Diodes will only affect the voltage, not the pulse width.

You can do that with built in functionality with free open source software such as OpenCart. Surely Prestashop (on which the site is based) can do this? I'm guessing that the owner simply does not have the knowledge/skills/time to do it, so they are at the mercy of the "developers".

I see the 11.75mm wheels are while stock lasts. Are the Black 5 kits running low, soon to be WSL too? Otherwise, it would be shame not to have the better wheels available for the kits.

What does the PCB silkscreen say for the connections to the 6-pole screw terminal? I don't think it's a DCC decoder, but could be wrong. The quality of the soldering and lack of cleaning suggests it was built from a kit.

There's no real conflict. I think you will find we have plenty of clues and know what we are talking about. You are choosing to prioritise what you were told by a retailer who does not sell DCC over the good advice you have been given in this thread from multiple sources. I know which I would trust! You do not need a 5A system for that ONE loco. What you seem to have been told is that you need an upgrade from the EZ Command. The next step from that if sticking with EZ is the 5A booster. Other manufacturers offer other boosters, some more than 5A, some less. A 5A system will give you some future proofing should you buy further locos.

What decoder have you fitted? What's the rating of the decoder? I seriously doubt a modern loco will draw anywhere near 5A under normal conditions. The whole point of DCC is running multiple locos on the same track circuit. What happens when you add more locos? What capacity booster do you need then 10, 20, 50A? Sorry for being so blunt, but it's just ridiculous.

In that case I wouldn't be using EZ Command :) Stupidly high track voltage and very limited functionality!

Check the continuity between the bare wire ends and the tip and the two rings of the jacks then match them up.

The answer is in the Extended Packet Format Spec S-9.2.1 where it explains the addressing. Any address above 10000000 is followed by another byte to form a two-byte address, hence: Addresses 11000000-11100111 (192-231)(inclusive): Multi Function Decoders with 14 bit addresses So 14-bit (or extended or 4 byte or whatever you want to call them) addresses range from (stripping the top two bits, adding the second byte and switching to hex) 0x2000 - 0x27FF, or 0 - 10,239. Some systems impose a limit of 0 - 9999 (hence refereed to as 4-digit).

They are 0.47 ohm resistors, used for current sensing. The fact they have released their magic smoke means that an overload was not detected correctly and the outputs were not turned off (or reversed) in a timely fashion. I would assume the MOSFETs for those channels are also damaged as they too will have had excess current through them.

As it's showing a short even with no track connection then it definitely loos like it's faulty. Please send it to us at the address on our website https://www.sprog-dcc.co.uk/contact and I will take a look. Andrew

If the meters are calibrated, they are calibrated. The diodes more or less cancel out. Perhaps a drawing will help. The voltage applied to the RR will be two diode drops less than the supply. The voltmeter will read two diode drops less than the supply, i.e. the voltage applied to the RR. There will be some inaccuracy due to the much lower current flowing through the voltmeter but it wouldn't be hard to bias the current through the lower bridge to even things out.