OTA flash types for MySensors
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Hi, old thread but I hope a question not too far off the mark. I'm using Easy PCB nodes and looking to use OTA on the reverse side. I'm having some issues finding a source in Australia for the SPI chip mentioned, I am seeing this one very easily available. From the data sheet on the page, it appears to be pretty much the same, just the lower end of the acceptable voltage is up to 2.6V. Any thoughts welcome if you can see if it would/wouldn't work, my tech knowledge is limited on this sort of thing.
https://au.rs-online.com/web/p/flash-memory/8228477
Cheers!
@p359 - not really good at these external flash either... but as you said its a 2.8-3.6v chip meaning you limit the EasyPCB to a regulated 3.3v 8mhz Pro mini. Battery operations will be hard to achieve (not impossible though). But since you are aiming for OTA i guess you wont be using sleep/battery.
for how to write to the chip, im not the person to ask/answer since this is quite new to me but it seems like a fair price so maybe worth a shot.
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@p359 - not really good at these external flash either... but as you said its a 2.8-3.6v chip meaning you limit the EasyPCB to a regulated 3.3v 8mhz Pro mini. Battery operations will be hard to achieve (not impossible though). But since you are aiming for OTA i guess you wont be using sleep/battery.
for how to write to the chip, im not the person to ask/answer since this is quite new to me but it seems like a fair price so maybe worth a shot.
@sundberg84 you raise an obvious point about upper voltage that I'd overlooked to to be honest. I'll make a 3.3v node up to test when the chips arrive to test. If it works, perhaps try to use on 5v node with a shifter. Will report back if they work or not. I see also in the code now, reference to using i2c eeproms. Plenty of options to try. Thanks
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@sundberg84 you raise an obvious point about upper voltage that I'd overlooked to to be honest. I'll make a 3.3v node up to test when the chips arrive to test. If it works, perhaps try to use on 5v node with a shifter. Will report back if they work or not. I see also in the code now, reference to using i2c eeproms. Plenty of options to try. Thanks
Not making too much headway with this. Chips arrived, soldered on the the reverse side of the easypcb. Not able to get any sign of the flash being seen. One odd thing, the physical solder pad for the flash chip, pin 6 on my boards isn't connected to sck of the arduino pin 13 at all, just a bare solder pad. I've bridged this with wire, still no luck. Hmmmm...! More experiments ahead, good fun!
