The voltage would fluctuate between 5.04V and 5.03V. I observed that this was the value through most of the test. After about 30 minutes I stopped the sysbench (using Ctrl + c). $ sysbench -test=cpu -cpu-max-prime=1000000 -num-threads=4 run I let this run for a few seconds and check the power consumption.Start a new tmux session and start taking measurements.The Pi has been idle for some time now and the initial power consumption is: 5.04V and 0.08A = 0.4032W.I will be running sysbench for 30 minutes using 4 threads in order to measure the temperature and power consumption. I am using the Raspberry Pi Zero W v1.1 here.Įlapsed Time (s),Temperature (☌),Clock Speed (MHz),Voltage Core (V)Įlapsed Time (s),Temperature (☌),Clock Speed (MHz),Voltage Core (V)0,34.7,1000,1.4 Verify the program can take measurements.You can either run the program using python3 measure.py or make the script executable with chmod +x measure.py.Print("Elapsed Time (s),Temperature (☌),Clock Speed (MHz),Voltage Core (V)")į.write("Elapsed Time (s),Temperature (☌),Clock Speed (MHz),Voltage Core (V)\n")Ĭlock = int(vc.measure_clock('arm')/1000000) Create a Python script named measure.py that will be used to sample vcgencmd every second and write the results to a file at /home/pi/measurements.txtį = open("/home/pi/measurements.txt","a+").
FLIRC ZERO INSTALL
FLIRC ZERO HOW TO
Please see my guide on how to setup a Pi to run in headless mode. without a display, keyboard and mouse) and will be using ssh to control the Pi. I have installed Raspberry Pi OS Lite onto a microSD card and configured the Pi to run in headless mode (i.e. NOTE: Don’t try this at home unless you know what you are doing and take safety precautions. I did not know before hand how much current the units will consume so I rigged up a USB charger using a double socket face plate that has a 3.2A USB charger built in. The Pi is held in place (in the air since I don’t know how hot it will get) using the Third Hand tool and I measure the power consumption using a Uni-T UT658B. The latest Raspberry Pi OS Lite (-raspios-buster-armhf-lite) is installed on a SanDisk Ultra A1 (Class 10) 32GB microSD card. The Raspberries will be running headless and only be connected to the USB power supply and my local WiFi network. I will be using a brand new unopened Raspberry Pi Zero W (v1.1) and Raspberry Pi Zero 2 W with no active (fan) or passive (heatsink) cooling and no case or GPIO headers. Here is a comparison of the Raspberry Pi Zero W v1.1 (Top) and Raspberry Pi Zero 2 W (Bottom).
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