Hi I took a activity tracker apart with the goal of writing my own firmware for it. I stumbled accross the component in the picture. But don't know at all what it could be. It is directly wired to an accelerometer and a 256Kbit EEPROM. Do you recognize the Logo? Background information: The activity tracker is based on the nRF51822 Link to the complete circuit board with background information: https://github.com/54696d21/reverse_engineering_nrf5x-wearables/blob/master/I5Plus-nrf51822-activity-tracker/Documentation/components.md
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Tim wrote: > Hi I took a activity tracker apart with the goal of writing my own > firmware for it. I stumbled accross the component in the picture. But > don't know at all what it could be. It is directly wired to an > accelerometer and a 256Kbit EEPROM. > Do you recognize the Logo? > > Background information: > The activity tracker is based on the nRF51822 > Link to the complete circuit board with background information: > https://github.com/54696d21/reverse_engineering_nr... GT22L16V2Y
My guess would by a gyroscope chip, but I was unable to find a match. Look at a distributors website for possible machtes on the package, and then look at the pinouts in the datasheet.
>GT22L16V2Y http://www.genitop.com/ So this is a display controller from Genitop? Rather unusual to have this as a separate part. Usually you see everything being controlled directly from the main MCU is low cost fitness trackers.
hinz wrote: > Tim wrote: >> Hi I took a activity tracker apart with the goal of writing my own >> firmware for it. I stumbled accross the component in the picture. But >> don't know at all what it could be. It is directly wired to an >> accelerometer and a 256Kbit EEPROM. >> Do you recognize the Logo? >> >> Background information: >> The activity tracker is based on the nRF51822 >> Link to the complete circuit board with background information: >> https://github.com/54696d21/reverse_engineering_nr... > > GT22L16V2Y Thank you very much, that looks very promising. How did you find that out?
Tim wrote: > How did you find that > out? https://en.wikipedia.org/wiki/Crystal_ball#/media/File:Quartz_crystal.jpg
Petor wrote: > So this is a display controller from Genitop? No, it is just some SPI memory containing fonts.
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hinz wrote: > Tim wrote: >> How did you find that >> out? > > https://en.wikipedia.org/wiki/Crystal_ball#/media/... I'll take one please :) I'm also looking for a datasheet to the component in this image
Rudolph wrote: > Petor wrote: >> So this is a display controller from Genitop? > > No, it is just some SPI memory containing fonts. Do have any source for that? My impression of the chinese datasheet in Google translate isn't the same... Thanks to you all :)
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