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Re: Turn Signal Module - Lets build a better one! [Re: BearDee] #719189
24/09/21 08:20 PM
24/09/21 08:20 PM
Joined: Apr 2021
Posts: 38
A
AlisterW Offline
Just Getting Started
AlisterW  Offline
Just Getting Started
A

Joined: Apr 2021
Posts: 38
The steering diodes should be testable if you can borrow/buy a continuity/resistance/diode test meter. CPC and Lidl's sell adequate meters for under £10 if you don't have one.

Re: Turn Signal Module - Lets build a better one! [Re: BearDee] #719214
25/09/21 08:38 AM
25/09/21 08:38 AM
Joined: Apr 2021
Posts: 38
A
AlisterW Offline
Just Getting Started
AlisterW  Offline
Just Getting Started
A

Joined: Apr 2021
Posts: 38
Re: VSS. I have tested the VSS circuit a few minutes ago while I still have Ian's 12-pin TSM ( it is a bit drizzly here so I am delaying a walk up to the PO for a while).
Yes, you are completely correct in that the VSS is used to cancel indicators after 7 seconds above a certain speed. That speed is a tad slower than with the 18-pin TSM, which could be due to manufacturing tolerances in the CPU's RC oscillator.

Ian's problem is solved, you will be pleased to hear.

Re: Turn Signal Module - Lets build a better one! [Re: BearDee] #719215
25/09/21 08:39 AM
25/09/21 08:39 AM
Joined: Apr 2021
Posts: 38
A
AlisterW Offline
Just Getting Started
AlisterW  Offline
Just Getting Started
A

Joined: Apr 2021
Posts: 38
It was not a duff relay or diode ;-)

Re: Turn Signal Module - Lets build a better one! [Re: BearDee] #719217
25/09/21 08:48 AM
25/09/21 08:48 AM
Joined: Apr 2021
Posts: 38
A
AlisterW Offline
Just Getting Started
AlisterW  Offline
Just Getting Started
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Joined: Apr 2021
Posts: 38
But Fuzz!

I cannot remember the correct term for this. Corrosion of the copper will generate copper sulphate (and other salts) which conduct electricity.
It may be worth spraying with something to prevent it reforming, e.g. 'conformal coating' or even WD40, but keep the spray to the area only as some relays do not like silicone. Many years ago, I heard of a telephone exchange getting a sudden increase in relay contact failures when the cleaners went from using bees-wax to silicone floor polish!

Radio Control modellers see something similar: it's called 'Blue Death' (or is it Green Death?, can't remember), in which the cable from a NiCd battery pack to the receiver corrodes.

Last edited by AlisterW; 25/09/21 01:00 PM. Reason: Extra information added.
Re: Turn Signal Module - Lets build a better one! [Re: BearDee] #719317
26/09/21 06:36 AM
26/09/21 06:36 AM
Joined: Jun 2021
Posts: 669
New Forest
Lordofthewings Offline
Talk Morgan Regular
Lordofthewings  Offline
Talk Morgan Regular

Joined: Jun 2021
Posts: 669
New Forest
A lot of my R/C equipment has suffered black wire corrosion. As Alister says, the most frequent occurrences are in Receiver (and Transmitter) battery packs, and seems to happen in storage even if the battery concerned is disconnected. It can also occur in servo wires. Wherever you spot it, cut it out and replace it, or it can have bad consequences.

[Linked Image]


Peter
2009 3-litre Roadster "Ivor", royal ivory / green
Re: Turn Signal Module - Lets build a better one! [Re: BearDee] #719328
26/09/21 08:11 AM
26/09/21 08:11 AM
Joined: Nov 2013
Posts: 619
exagone
G
GLLOQ Offline
Talk Morgan Regular
GLLOQ  Offline
Talk Morgan Regular
G

Joined: Nov 2013
Posts: 619
exagone
To avoid any oxidation problems with the negative cables of the electric harness on the frame, I solder all the negative electrical terminals with lead and strip the frame of its paint and protect it with aluminum grease when removing the body for the first time. .

Re: Turn Signal Module - Lets build a better one! [Re: BearDee] #722081
20/10/21 07:20 PM
20/10/21 07:20 PM
Joined: Apr 2021
Posts: 38
A
AlisterW Offline
Just Getting Started
AlisterW  Offline
Just Getting Started
A

Joined: Apr 2021
Posts: 38
I have not heard as to how the test is going, so I am assuming that all is well and the first TSM-2 is driving all over the country as we speak!
Therefore a batch of 20 will be made as soon as I get a shipment of capacitors in - there is a world shortage of all sorts of components at the moment, and that's not helping

If people wish to buy one of the new 18-pin TSM-2 modules then please email me at work. Once the batch is ready I can let you know the price.

Use my name (without the trailing 'W') followed by @qbi-c.co.uk

Last edited by AlisterW; 20/10/21 07:21 PM. Reason: Making my e-mail address 'fool-proof'!
Re: Turn Signal Module - Lets build a better one! [Re: BearDee] #724346
11/11/21 06:18 PM
11/11/21 06:18 PM
Joined: Apr 2021
Posts: 38
A
AlisterW Offline
Just Getting Started
AlisterW  Offline
Just Getting Started
A

Joined: Apr 2021
Posts: 38
The first batch has had the conformal coating applied this afternoon and half the batch are now in their enclosures, labelled and tested. Here are some snaps taken today...[img]https://www.dropbox.com/s/tpo7qihzsisxqd8/DSC02747.JPG?dl=0[/img]
[img]https://www.dropbox.com/s/2nfp0d2n3g9xnvu/DSC02752.JPG?dl=0[/img]
[img]https://www.dropbox.com/s/mr3hazh4nfgm3j7/DSC02755.JPG?dl=0[/img]
[img]https://www.dropbox.com/s/fcqp3ccb1m1v5lm/DSC02758.JPG?dl=0[/img]
[img]https://www.dropbox.com/s/v1l2z9jdgz7ndhs/DSC02759.JPG?dl=0[/img]
We should post some out tomorrow morning, but it won't be first thing due to an early Zoom meeting.

Re: Turn Signal Module - Lets build a better one! [Re: BearDee] #724350
11/11/21 06:51 PM
11/11/21 06:51 PM
Joined: Mar 2014
Posts: 1,424
Leicestershire, UK
Bunny Offline
Has a lot to Say!
Bunny  Offline
Has a lot to Say!

Joined: Mar 2014
Posts: 1,424
Leicestershire, UK
They look splendid. Most professional! Here are the photos without having to access dropbox:

[Linked Image]
[Linked Image]
[Linked Image]
[Linked Image]
[Linked Image]


Andy
Re: Turn Signal Module - Lets build a better one! [Re: Bunny] #724425
12/11/21 10:52 AM
12/11/21 10:52 AM
Joined: Apr 2021
Posts: 38
A
AlisterW Offline
Just Getting Started
AlisterW  Offline
Just Getting Started
A

Joined: Apr 2021
Posts: 38
Thanks very much for sorting that out ;-)

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