Calculator blog

Here are some pictures of the complete cable:

Hopefully sent to customers by the end of the week.

There will be some sort of compensation for the delay to all.

Continuing with the programming cable: I received pictures of some parts as they were being produced by the manufacturer. These are the circuits used for the two buttons in the cable: the Reset and Erase buttons.

The clip was also extensively desgined and tested in several materials and shapes before finally commiting to a mould. The producer estimated that the 0,4mm diameter pin was too thin for repeated use, se we brought it up to 0,6mm. I concur: in the past some pins in 0,4mm were easily bent and I destroyed a couple of cables.

The head of the cable is asymetrical so there is one way only to insert it.