Error while initializing the PMW3901 sensor after soldering directly to Crazyflie 2.1

[andrew-t97]

I’m having some trouble with the Flow deck V2 on my Crazyflie 2.1. I’ve directly soldered the Flow deck to my Crazyflie. Unfortunately, I’m now getting issues with the deck’s initialisation. It seems to be an issue with the PMW3901. I’ve checked the voltages of each of its related components, and I believe they’re okay. I also can’t see any physical damage to the deck. Does anyone know what might be causing this behaviour? Could I have missed something in the soldering/voltage measurement?

The firmware I’m using is built from the master branch of the firmware repository at commit 7f1f78251fccdb355d672d579997238258e367d2 (24th of July 2024). I’ve added the logs I get in the cfclient and the voltages I measured below. I’ve also attached some images of the Crazyflie2.1 and the deck (I’m sorry you have to witness my soldering 😭).

Logs

SYS: ----------------------------
SYS: Crazyflie 2.1 is up and running!
SYS: Build 169:7f1f78251fcc (2023.11 +169) CLEAN
SYS: I am 0x313232313232471200230024 and I have 1024KB of flash!
CFGBLK: v1, verification [OK]
DECK_CORE: 1 deck(s) found
DECK_CORE: Calling INIT on driver bcFlow2 for deck 0
ZR2: Z-down sensor [OK]
PMW: Motion chip id: 0x:0x
IMU: BMI088: Using I2C interface.
IMU: BMI088 Gyro connection [OK].
IMU: BMI088 Accel connection [OK]
IMU: BMP388 I2C connection [OK]
ESTIMATOR: Using Kalman (2) estimator
CONTROLLER: Using PID (1) controller
MTR-DRV: Using brushed motor driver
SYS: About to run tests in system.c.
SYS: NRF51 version: 2024.2 (CF21)
EEPROM: I2C connection [OK].
STORAGE: Storage check [OK].
IMU: BMI088 gyro self-test [OK]
Error while initializing the PMW3901 sensor
DECK_CORE: Deck 0 test [FAIL].
SYS: deck [FAIL]

Voltages

C7 - 1.8
C8 - 3
C9 - 1.7
C12 - 3
C13 - 1.7

R7 - 1.8 / 1.8
R8 - 3 / 2.85

Thanks so much for your time and any help you can provide!