What have you been printing.

[The Shed]

Are these instead of using servo controlled relays?

Possibly....

Friend of mine had used all the available Function Outputs on a decoder he was using, the decoder had two unused Servo Outputs, hence the idea of combining a Servo with a Micro Switch, activate the Servo, Servo arm moves and closes the Micro Switch, simple but effective ON - OFF switch.

 

[3 minutes of fame]

Interesting.
I've been using these: Dimension Engineering PicoSwitch Radio Controlled Relay - DE-03

 

[The Shed]

These are the items used, no doubt they could be sourced elsewhere, given the fluctuations in prices and the difficulty in sourcing from the Far East, opted for UK Sellers.

Not included is the cost of the PLA filament, some small nuts and bolts and bits of wire!

As a price comparison...Hmmm.... guess that's down to each individual.....

It does what it does, switches whatever alternative circuit ON or OFF.

Micro Switch £4.60 for 5 works out at £0.92 each.

5x 5A Micro Switch Lever V4 Microswitch KW11i, 3D Printer Endstop 5GL heavy duty | eBay

Part number is SS-5GL (or XSS-5GL as they are XURUI switches -heavy duty ). New 5A microswitch (SPDT) with lever attached. This is a high quality switch which works very precisely. CCC, CE, TUV approvals.

www.ebay.co.uk

MG90S Servo £2.99 each, discount available for multiples.

MG90 Hobby Servo + Arms - 5V for Arduino - 3 Pin 24cm dupont Cable - UK Free P&P | eBay

MG90 Micro Servo. Perfect for Raspberry Pi and Arduino. Ideal for Raspberry Pi and Arduino projects. 3 Pin Dupont Cable. 3 Pin Cable : Brown - Ground, Red - VCC, Orange - Pulse Input.

www.ebay.co.uk

The price difference between a standard nylon/plastic geared Servo to a Metal Geared Servo is minimal, down to end user choice.

 

[The Shed]

All gone to Pot!

 

[PhilP]

Did you print the shaft-coupler?

Such things do exist, but seem to be kept next to the Unicorn Horns..

Could you divulge the source, or print me a couple, please?

PhilP.

 

[The Shed]

Testing the theory....

Slight tweaks and reprinted the two mounting brackets, test program using a Arduino UNO R3, to establish upper and lower angles of the Servo in relation to the wiper on the Potentiometer.

Next stage, to attempt to design and print a coupler adapter between a 180 degree Servo to the Potentiometer, as the theory worked, splashed out a several pounds on some genuine Alpha and Bourns Potentiometers.

Plenty of time on my hands, extended shielding enforced until the end of March, hence have time to theorise!

 

[casey jones snr]

A new roof was printed for my Box Diesel. It has a slight overhang at each cab end:-

 

[itsmcgee]

I've been printing some new mining cars for my 7/8ths equipment.

 

[The Shed]

The coupling adapter for a 180 degree Servo, challenging but doable, just awaiting genuine potentiometers.



Whist awaiting parts for the above, designed and printed surrounds/ base plates for the LGB Track Cleaning Loco electronic adaptation for the Cleaning Motor.
.

Very much a work in progress, test prints to see how it a) looks and b) ease of assembly.
(Idea subject to change!)

 

[ge_rik]

Bachmann Lyn to Schull & Skibbereen 0-4-4T now more or less finished


Rik
PS - I've blogged the build here - How I converted a Bachmann Lyn into a Schull & Skibbereen 0-4-4T

 

[mike]

Scrap plastic wheels and a re hash of a design..into metal wheels on a load...