Making Minimal Mechanical Digital Clock New devices are so much fun to build or use. Lately been motivated by interesting designs from around the Internet and building time counting/displaying devices are an obsession, as they are more useful than just showing some irrelevant counter, been building quite a few clocks. ThingSurfing led me again to Thingiverse and I came across this Minimal Mechanical Digital Clock Seems like the maker Shiura is also obsessed with making various "time machines" (clocks). But there is an interesting mechanical and digital interface to all these devices, which is unique and provides a new angle to time. It was 3D printed and mechanically well designed enough not to need any changes. Used the standard code provided. Though this code runs on a network connected microcontroller, was able to get this working on an Arduino with manual setting of time. The ESP was not able to drive the motor well. Maybe an issue with the power supply. Need to check th...
Leg Brake on a Bicycle Growing up, there was a need to learn how to drive a geared motor cycle and also get a driver's license. There are two categories of two wheeler licenses: one for geared vehicles usually with leg brakes and one for auto/non-geared vehicles where the braking happens by hand and are simpler to operate. Driving license had already been acquired for the non-geared vehicle but due to lack of availability of a geared vehicle for practice, the acquiring of this license was taking quite some time. The main problem was adapting to braking a vehicle using the leg where one to respond differently and the conditioning takes some time. Unfortunately could not manage to get anybody/s vehicle for learning after many attempts. And at that time (1995 or so) bicycles were rather common and used for transport. So an idea was: why not add such a feature to a bicycle. A Hercules Town and Trek was also available. After some visits to the local bicycle shop and a used vehicle part...