DBL-SS 60/70mm Deadbolt Latch Bolt SS
http://www.vinco.com.au/products.php?subcat_id=4
Tag: parts
Parts list.
Hardware
Steelmate Slave Door Lock Actuator [ Jaycar 14.95 ]
Vinco DBL 60/70mm Deadbolt Latch Bolt [ Hildebrandt Locksmiths 12.00 ]
Piano wire [ Extreme Hobbies 2.80 ]
25mm square section aluminium [ Bunnings Hardware ]
Electronics
Phidget motor controller.
After heading down a complex path with Arduino and a motor controller with many more features than are required I think I can simplify the build by switching to a Phidget motor controller (1064 – PhidgetMotorControl HC). Its all in one (rather than Arduino + controller), has Python (and many other) libraries, and has built-in inputs for sensors as required. The only issue with the HC is the height of the terminator block – I’m checking this at  the moment.
EeePC arrives.
JB HiFi matched Harvey Norman’s sale price on a new EeePC 701SD. A better price than older and second hand models have been going for on Ebay this month. Hopefully I’ll be able to use the Asus online storage (10GB) in the project too perhaps for database backups.
One of the first jobs will be to install the conceptnet package and see how it performs. Then take the netbook apart and try and thin it down to 27mm.
Motor mounting.
Gear to bolt connection.
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The small metal plate needs to be milled. The centre two tabs adjacent to the axle hole bend toward the bolt, becoming the turning arms. The outer two bend toward the gear into outer holes to locate the plate on the gear.
An arrangement of gears.
The new deadbolt with its top spring removed slides with less force than expected. Two gears (white) from a scavenged VCR match nicely with the Tamiya on the stepper. The black gear (Jaycar) will mate with the turning axle in the bolt. The axle rotates only 90° between fully extended and fully retracted.
