Realme Band and Samsung Galaxy Fit 2 Reviews

Last updated: 2022/3/25

I bought two smart bands to monitor sleep and heart rate. It’s interesting to know which sensor is usedI bought two smart bands to monitor sleep and heart rate. It’s interesting to know the sensors and medical theories behind them.

After using them for more than 10 months, I realize alarms, timers, sleep, and exercise trackers are the most frequently used features to me. The latter two are good at recording durations but not accurate on sleep stages and heart rate. I also found the gyroscope helps to detect motions more precisely than a single accelerometer.

In conclusion, smart bands are good at time management but not heart rate or sleep stages. The sensors and theories are not as accurate to medical equipment.

Continue reading “Realme Band and Samsung Galaxy Fit 2 Reviews”

Turn Off LED on msi Motherboard

Table of Contents

  1. Quick Guide
  2. Install msi-rgb
  3. Turn Off Immediatedly
  4. Turn Off on Start
  5. Turn Off After Resume
  6. Reference

Quick Guide

  1. Get and install nagisa’s msi-rgb utlity for msi motherboards.
  2. OpenRGB is an alternative solution and supports more motherboards.
  3. Turn off by running ‘sudo /home/amigo/msi-rgb/target/release/msi-rgb -x 00000000 00000000 00000000‘.
  4. Use crontab to turn off after boot.
  5. Create a shell script in /lib/systemd/system-sleep/ to turn off after resume.
Continue reading “Turn Off LED on msi Motherboard”

How to Use AdGuard Protected Public DNS on Routers and Mobile Devices

Table of Contents

  1. Quick Guide
  2. Feedback from Communities
  3. How it works
  4. AdGuard Home and AdGuard DNS
  5. Use in a Router
  6. Use in Asus RT-AC1200G+
  7. Use in Huawei B311As-853
  8. Use in Android Devices
  9. Use in iOS Devices
  10. Reference

Quick Guide

  1. AdGuard Protected DNS: 94.140.14.14, 94.140.15.15.
  2. AdGuard Protected DNS-over-TLS: dns.adguard.com
  3. The WAN DNS is the DNS used by the router.
  4. The DHCP DNS is the DNS assigned to the DHCP client.
  5. SSH login and run ‘nvram set dhcp_dns1_x=94.140.14.14 ; nvram set dhcp_dns2_x=94.140.15.15 ; nvram commit ; service restart_dnsmasq‘ to change the DHCP DNS in RT-AC1200G+
  6. On Android, create a Private DNS with the DNS-over-TLS in Android 9 and newer.
  7. On iOS, assign the DNS SERVERS in the WiFi connection.
Continue reading “How to Use AdGuard Protected Public DNS on Routers and Mobile Devices”

Style Guide

Styles

StyleDescription
[reference number]Source links are managed in the reference section
[icon, button, and menu item name]Clickable or selectable items
“field and label name, messages”Fixed text strings
‘input string, code, command, command parameters, and url’User-editable text strings
command name, script name, application, file/folder name, and post/article sectionName of a command,  option, and item
highlightKey items and conclusion
<?php echo'';>
PHP color coding with line numbers
$ls -la
bash in colors

Symboles

NameSymbole
Next➞ U+279E
Arrow Key→U+2192
←U+2190
↑U+2191
↓U+2193
Command
Do not disturb
Dot in the middle
Information
Settings
Space

The Max Power for an ATX 4-Pin CPU Power Connector is 108W

Because the i5-9400F consumes 80W at-wall while loading 300 tabs in Chrome, which is a huge jump from 30W at idle, I want to know if it is safe using the only 4-pin CPU power connector on Gigabyte H310M S2V 2.0 (rev. 1.0).

I checked the 4.2.2.3 +12V CPU Power Connector (Required) in Single Rail Power Supply ATX12VO Design Guide and 4.2.2.5 +12V Power Connector in Power Supply Design Guide for Desktop Platform Form Factors. Molex 39012040 and 444761112 are used on the PSU and 39299042 on the motherboard.

The maximum current can be found in the Part DetailsElectricalCurrent – Maximum per Contact on their datasheet respectively:

  1. molex 39012040: 13.0A
  2. molex 444761112: 11.0A
  3. molex 39299042: 9.0A

Because the voltage is 12V and the minimum curent of the above parts is 9.0A, the maximum power is 12V x 9.0A = 108W.

Style Guide

The Style used in AmigoTechNotes

Reference

  1. Intel: Single Rail Power Supply ATX12VO Design Guide
  2. Intel: Power Supply Design Guide for Desktop Platform Form Factors
  3. molex: 39012040
  4. molex: 444761112
  5. molex: 39299042