On 07/22/17 12:10, Theo de Raadt wrote:
I'd really like if someone could find a USB RTC clock, which is a viable affordable product which we can then create good support for. I've searched and found a few prototypes and 'licence key' products, but nothing readily available which we could support & encourage as a solution for the RTC problem.
What kind of packaging, fit & finish, and price would be acceptable? For example: A commodity microcontroller on a tiny PCB, a Dallas Semi RTC on another tiny commodity PCB and a lithium coin cell in a 4cm x 6cm x 2cm commodity box could be professionally assembled and sold in unit quantities in a month for $50. Accuracy limit is the 32Khz crystal. Temperature compensation to match the standard quartz curves in the ucode. Burn-in and trimming to a few PPM would add maybe $5. The same parts on a single PCB in a slightly smaller box might take three months, an expected sale quantity of 50, and sell for $30. USB stick size, etc. - I'm sure you can extrapolate from there. Geoff Steckel
