> > > I suppose I am using a linear regulator to drop the lithium battery to 3v, > so some wasted power there. >
I dont know what your battery capacity is, but if it's around 1000mA-hr, your watch will run in standby mode at 95uA for a year. So even though it's wasting some energy with the regulator, it's probably of little consequence. I had some challenges getting my LT3561 to work, notably soldering that tiny thing, and noise/lead-inductance from my bench supply. I've often wondered if I should have stuck with a simple LDO. My original intention was to make a sealed watch so it would be waterproof, and I would turn it on by touching 2 exposed metal bumps (skin resistance). To charge it, I would apply about 5V on the same bumps. And to set the time, it would be a serial protocol, again on the same bumps. I ran out of FPGA gates to do the serial protocol, and my skin resistance was too high to overcome the ESD-protection on the 2 bumps. If I had more time, I would replace the FPGA with a microcontroller and solve the 'skin switch'. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/185d3b7d-d3ce-45bf-b20f-86f9de55adfe%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
