Issues

• I2C bus occupancy: read on-board chip address strapping and confirm segment topology; resolve Haar 0x48 and Walrus 0x57 clashes

  enhancement
  NorthernWidget/Project-Okapi#29 · Filter by author awickert opened on Sep 21, 2026

• Accumulated minor design issues: USB resistors, AVCC ferrite, C42 mismatch, TODO flag, SDA_OB loading

  bug
  NorthernWidget/Project-Okapi#28 · Filter by author awickert opened on Jun 3, 2026

• TPL5111 hardware watchdog timer not suppressible by firmware

  enhancement
  NorthernWidget/Project-Okapi#27 · Filter by author awickert opened on Jun 3, 2026

• No MCU-controlled hardware reset path to Particle B-Series module

  enhancement
  NorthernWidget/Project-Okapi#26 · Filter by author awickert opened on Jun 3, 2026

• SD card: missing signal series resistors and no power-down control

  enhancement
  NorthernWidget/Project-Okapi#25 · Filter by author awickert opened on Jun 3, 2026

• Ground plane discontinuity under switching regulators (2-layer board)

  bug
  NorthernWidget/Project-Okapi#24 · Filter by author awickert opened on Jun 3, 2026

• Missing /RESET bypass capacitor on IC1 (ATmega1284P)

  bug
  NorthernWidget/Project-Okapi#23 · Filter by author awickert opened on Jun 3, 2026

• Feedback divider impedances too high on TPS62822 and TLV61220 regulators

  bug
  NorthernWidget/Project-Okapi#22 · Filter by author awickert opened on Jun 3, 2026

• PAC1934 current-sense resistors R72–R75 have no values specified

  bug
  NorthernWidget/Project-Okapi#21 · Filter by author awickert opened on Jun 3, 2026

• LT3652 MPPT threshold set to 6.5 V — too high for 6 V nominal solar panel

  bug
  NorthernWidget/Project-Okapi#20 · Filter by author awickert opened on Jun 3, 2026

• No ESD protection on Particle B-Series USB Micro-B connector (secondary modem interface)

  bug
  NorthernWidget/Project-Okapi#19 · Filter by author awickert opened on Jun 3, 2026

• Crystal load capacitors undersized for XTAL1 (8 MHz, 18 pF C_L)

  bug
  NorthernWidget/Project-Okapi#18 · Filter by author awickert opened on Jun 3, 2026

• IC1 (ATmega1284P) VCC bypass capacitor missing

  bug
  NorthernWidget/Project-Okapi#17 · Filter by author awickert opened on Jun 3, 2026

• TPS62822 PG pullup to 5V drives MCP23018 GPIO input above absolute maximum

  bug
  NorthernWidget/Project-Okapi#16 · Filter by author awickert opened on Jun 3, 2026

• IC1 AREF tied directly to AVCC (5V_AUX) with no bypass cap — internal reference conflict risk

  bug
  NorthernWidget/Project-Okapi#15 · Filter by author awickert opened on Jun 3, 2026

• B-Series M.2: should SIM interface pins be routed?

  NorthernWidget/Project-Okapi#14 · Filter by author awickert opened on Jun 3, 2026

• v1.0 Updates

  enhancement
  NorthernWidget/Project-Okapi#13 · Filter by author bschulz1701 opened on Sep 23, 2024
  

• Serial_Ctrl.ino

  bug
  NorthernWidget/Project-Okapi#12 · Filter by author awickert opened on Jul 5, 2021
  

• Move RockBlock Feather board to its own repo

  NorthernWidget/Project-Okapi#10 · Filter by author awickert opened on Apr 25, 2020 · v0.6.0
  

• Output drain MOSFET issue

  bug
  NorthernWidget/Project-Okapi#7 · Filter by author bschulz1701 opened on Jan 4, 2020 · v0.6.0
  1

  

• Connect STAT pin from LTC4412?

  enhancementquestion
  NorthernWidget/Project-Okapi#5 · Filter by author bschulz1701 opened on Aug 7, 2019
  

• Allow for Always On Port?

  enhancementquestion
  NorthernWidget/Project-Okapi#3 · Filter by author bschulz1701 opened on Jul 24, 2019