• Petus
• July 14 2016
• Raspberry Pi, Cubieboard, Banana Pi, BeagleBone, Orange Pi
• 3737 Reads
• 0 Comments

Another article about CHIP computer.
In this article find speed of USB, WiFi, current consumption (during boot and after boot), log from boot pictures from thermal imager.

Articles about CHIP computer:
CHIP computer: first sight and comparison with Raspberry Pi Zero - pizero
CHIP computer: connection to WiFi, SSH, UART
CHIP computer: speed of USB, WiFi, current consumption and pictures from thermal image
CHIP computer: flashing OS, python, LED and blinking of LED after boot
CHIP computer: USB webcam
CHIP computer: I2C bus - AD7415 temperature sensor
USB speed:
I tried USB speed with CHIP computer and old flash disk Kingston DataTravelerMini 1GB. When I used modern Kingston DataTraveler R3.0 G2 16GB, the CHIP computer turned off. It could be caused weak power supply (I used USB power supply for tablet) or current fuse.
USB speed was also tested with Lenovo G550.
1MiB file.


10MiB file.


CHIP computer copied one big file (185MB) and a lot of hundreds small files (27MB, over 2000 files) with rsync.
Write - Big file:


Write - Small files:


Update: Small files (7MB, 700 files). Big file (100MB)
Read - Big file:


Read - Small files:


WiFi speed connection:
I used very popular http://www.speedtest.net/.
Measurement was carried out Lenovo G550 with WiFi 802.11b/g (during normal working). I chose the same servers like speedtest script in CHIP computer.




After that I tried mobile phone with WiFi 802.11 b/g/n


Script speedtest in CHIP computer.
Running:
wget -O speedtest-cli https://raw.github.com/sivel/speedtest-cli/master/speedtest_cli.py
chmod +x speedtest-cli
./speedtest-cli



Current consumption:
I used calibrated multimeter Keysight U1272A.
CHIP computer was powered through battery input 3.7V.
Maximal current consumption:
during BOOT: 0.7949 A
in idle boot (after BOOT): 0.25 A

Avarage current consumption:
during BOOT: 0.38 A
after BOOT: 0.24 A

Log of BOOT:
Download here.

Pictures from thermal imager:
TOP side of CHIP computer during BOOT.


BOTTOM side.


After 10 minut working. TOP side.


BOTTOM side.