I know this is a subject that is exaustive and at risk of sounding ad nauseam I have to ask because I have no solutions. My pi is reporting undervoltage. I haven't ran into this since using a Pi1 model B+ >.<
This Pi is not overclocked.
This Pi uses the DSI camera and display ports; there is nothing else connected.
This Pi runs octoprint and utilizes VNC and Desktop. Ultimately it will display octoprint full time.
No other features are turned on in
This power supply is new, but identical to my other Pi setups. Monitoring voltage I supply a constant unfluctuating 5.1V. From reboot to idle, it doesn't budge more than 0.02V. I have the supply power running to pins 2(+) and 14 (-). Pins 4(+) and 6(+) are supplying power to the Pi Touch Display. Pins 3(SDA) and 5(SCL) are touchscreen communications.
pi@mk4-octopi-pi3:~ $ \ > for id in core sdram_c sdram_i sdram_p ; do \ > echo -e "$id:\t$(vcgencmd measure_volts $id)" ; \ > done core: volt=1.2000V sdram_c: volt=1.2500V sdram_i: volt=1.2500V sdram_p: volt=1.2250V pi@mk4-octopi-pi3:~ $ vcgencmd get_config int aphy_params_current=819 arm_freq=1400 arm_freq_min=600 audio_pwm_mode=514 camera_auto_detect=-1 config_hdmi_boost=5 core_freq=400 desired_osc_freq=0x331df0 desired_osc_freq_boost=0x3c45b0 disable_commandline_tags=2 disable_l2cache=1 disable_overscan=1 display_auto_detect=1 display_default_lcd=1 display_hdmi_rotate=-1 display_lcd_rotate=-1 dphy_params_current=547 dvfs=3 enable_tvout=1 force_eeprom_read=1 force_pwm_open=1 framebuffer_ignore_alpha=1 framebuffer_swap=1 gpu_freq=300 init_uart_clock=0x2dc6c00 lcd_framerate=60 max_framebuffers=2 over_voltage_avs=31250 over_voltage_avs_boost=0x2191c pause_burst_frames=1 program_serial_random=1 sdram_freq=450 total_mem=512 hdmi_force_cec_address:0=65535 hdmi_force_cec_address:1=65535 hdmi_pixel_freq_limit:0=0x9a7ec80
Anyone have ideas as to why I'm getting this undervoltage? The only thing I can think of to try next is power the display directly from the power supply instead of utilizing the pins on the pi - but that's extremely unlikely to be the problem and as I've said I have several identical setups that don't have this issue.