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Heltec Tracker v1 and v1.1 - Power Config #4153

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mkgin
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@mkgin mkgin commented Jun 21, 2024

TL;DR.

Output high to measure voltage in the same why as other heltec device forces the ESP32 to try to pump 3.3v into the base of Q3.
Solution, use internal pullup and pulldown resistor

Fixes #3760

WORK IN PROGRESS

Progress so far:

  • Hasn't caught fire yet.
  • Battery measurements seems ok

TODO:

  • Measure current, check voltages at relevant pins.
    • Not in a position to measure differences for a few days.
  • take a better look at code
  • CLA issues? credit to OP?
  • check circuit for tracker v1.0 and add it if there is the same issue

@caveman99 caveman99 changed the title Changes according to discussion here: Heltec Tracker v1 and v1.1 - Power Config Jul 22, 2024
https://meshtastic.discourse.group/t/heltec-tracker-v1-and-v1-1-power-config/12016/4

WORK IN PROGRESS

TL;DR.

Output high to measure voltage in the same why as other heltec device forces the ESP32 to try to pump 3.3v into the base of Q3.
Solution, use internal pullup and pulldown resistors.
http://community.heltec.cn/t/wireless-tracker-power-consumption/13841/6

Progress so far:

* Hasn't caught fire yet.
* Battery measurements seems ok

TODO:

* Measure current, check voltages at pins.
  * Not in a position to measure or a differences for a few days.
* take a better look at code
* CLA issues? credit to OP?
* check circuit for tracker v1.0

Related to this open issue.
meshtastic#3760
@caveman99 caveman99 force-pushed the heltec_tracker_adc_q3_fix branch from 77d211b to 858ca25 Compare July 22, 2024 13:15
@mkgin
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mkgin commented Jul 24, 2024

As mentioned here... haven't been able to do anything with this. Have a chance to look at this again now.

Todo:

  • add the original HELTEC_TRACKER to the #ifdef
  • test ( I only have 1.1)
  • measure

@mkgin mkgin closed this Oct 1, 2024
@mkgin mkgin deleted the heltec_tracker_adc_q3_fix branch October 1, 2024 18:16
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[Bug]: Heltec Wireless Tracker Battery issues - possible fix
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