IP found
Blog Articles

Control Board Design

Article #22 - 25/10/2021 23:53
The slave control board will talk to the main control unit via the SPI bus.
Each of these boards have the following...
  • 8x DPDT relays - these will connect/disconnect power to track zones, and swap between red/green signal LEDs for that zone.
  • 8X Power MOSFET diodes for switching power to the point motors from the Capacitor Discharge Unit. (2 ways for 4 points)
  • 8x General I/O ports for general use - 2 of which can be PWM outputs.
  • Comms via the SPI bus or via Bluetooth via the RS232 port.
  • Ability to have a stored sequence for automatic running.

2 of these units will be required for the main loops - with another to be used for the inner areas such as the traverser & turntable.


Testing Kadee Couplings

Article #21 - 25/10/2021 23:39
These couplings are great if you can get them set-up correctly.
They are American-style knuckle couplings that use magnets to uncouple them.
Under tension, the couplings stay connected going either way over the magnet, but it the tension is released slightly (by backing up a tiny bit), the magnet opens the knuckles.
In this open state, the wagon can be pushed down the siding (into place) as the knuckle is forced to stay open during this push.
Once the loco (or other wagons) mode away, the knuckle springs back to it's "ready" position to allow it to be re-coupled later.


493bgdebach.co.uk Jeep & Vehicle Run 2021 - Part 2

Article #20 - 25/10/2021 23:24
2021 September Open Sunday - Jeep & Vehicle Run with 50 or so vehicles on the annual event.
The 493 Bomber Group Museum in Debach (Suffolk UK) was the base for the event, but even with petrol shortages in the area, there was a great turnout.


493bgdebach Jeep & Vehicle Run 2021 - Part 1

Article #19 - 25/10/2021 23:23
2021 September Open Sunday - Jeep & Vehicle Run with 50 or so vehicles on the annual event.
The 493 Bomber Group Museum in Debach (Suffolk UK) was the base for the event, but even with petrol shortages in the area, there was a great turnout.


009/HOe automatic turntable build

Article #18 - 25/10/2021 23:09
Turntable for 009/HOe layout.
Controlled by Arduino style chip, the motor is stepping on a 1/16 step, giving about 9 steps per degree, so hopefully accurate enough.
Need to add a limiting switch to initialise it. Also the firmware will prevent it from turning more than 360 degrees, so the power wires won't get tangled up.


Photos from the Blog articles

Click on an image to open the image gallery
 Like this page