DIY Scientific Calculator Watch

They say that necessity is the mother of all invention, and the same holds true for David Jones when his faithful Casio CFX-400 scientific calculator watch broke after 10 years of day-to-day use. David decided to look for a replacement but to no avail, so he decided to cook one up for himself. He managed to cobble one after getting a 53mm x 20mm compact 2-line LCD display and other off-the-shelf components. This prototype you see here is rather rough, but hopefully in due time he’ll manage to smoothen out the edges for a more palatable look.