HP97 The journey begins

[teenix]

(03-04-2020 12:39 PM)Hans-Peter Wrote:  - Power management for using 3.7v lipo or li-ion cells charged by the standard charger.
- Timer like the 41 time module.
- BT Module
- Special charakters via the keyboard not only the PC
....

Like christmas and easter together

Cheers
Hans-Peter

PS:
I like my 65er with his 2nd live. My 97er patient is still waiting for a new heart.

The power circuitry in the 97 is split across two circuit boards and is integrated with display brightness and overvoltage, so modifying it to suit different charging methods would be problematical. The 97 won't work properly with a partially flat or removed battery while connected to its charger, plus the battery voltage on the 97 is around 5V, so I think external charging might be a better choice for different battery types.

I'll look into the 41 timer, the rest I can do.

cheers

Tony