Cheap stuff from the Far East
DS3231 AT24C32 Memory Module For Arduino IIC Precision RTC Real Time Clock http://r.ebay.com/F9pjcf
LCD USB Mini Voltage and Current Detector Mobile Power USB Charger Tester Meter http://r.ebay.com/CHvdFv
http://www.banggood.com/LCD-USB-Mini-Voltage-And-Current-Detector-USB-Charger-Tester-Meter-p-943362.html
Pro Mini Enhancement 3.3V/5V Adjustable 8MHz MEGA328P (Arduino -compatible) http://r.ebay.com/hhyq9z
12V 24V Male Car Cigarette Lighter Socket Plug Connector On Off Switch 1.5m DBX http://r.ebay.com/SLv2Op
Apology: The first upload of this video contained an error, this is a re-upload. Unfortunately that means the 15 comments posted on the first upload are now lost.

By Julian

Youtuber, shed dweller, solar charge controller aficionado

11 thoughts on “Postbag #18: ds3231 rtc, usb lcd doctor, 3.3v pro mini, cigar plug”
  1. Avataaar/Circle Created with python_avatars Da ve says:

    I tried with Arduino using loops and max7219 plus RTC lib …kept loosing time and it comes with cr3032 which is wrong and should be lih3032 rechargeable I tried an 18650 until I found out it charges to 4.35 ๐Ÿ˜‚๐Ÿ˜†

  2. Avataaar/Circle Created with python_avatars RCM says:

    8;40 it started flashing when power output was 4.59 volts,its telling you voltage too low

  3. Avataaar/Circle Created with python_avatars Richard Smith says:

    I love pro micros and pro mini's. So damn useful.

  4. Avataaar/Circle Created with python_avatars Xavier says:

    nice you could also put a switch on the sorder bridge if you want to be able to switch more easily

  5. Avataaar/Circle Created with python_avatars Mike oliver says:

    can it check voltage drop on a cable? I ordered one that looks just like it that claims it can show the voltage drop on a cable when plugged into the USB mini.

  6. Avataaar/Circle Created with python_avatars Steve_I says:

    I guess it's the "4884 Joystick Shield" you'r using in your Arduino Clock – would you recommend it? Nice menu and love this way to set the seconds, really cool idea!

  7. Avataaar/Circle Created with python_avatars Rob says:

    nice gadget. I wish the Chinese would include instructions. did you ever find a manual for it?

  8. Avataaar/Circle Created with python_avatars PC KUCHING says:

    USB LCD Doctor, double click LCD will flash, while LCD flashing click once to go to the next number, double click again lock to the select number….to reset the number click 5 sec will reset the next number to zero.

  9. Avataaar/Circle Created with python_avatars Mark Lindsay says:

    Id like to buy one of these usb testers to check a few cables and charges i have.

    For a complete layman how would i test which chargers and cables are the best for fastest charge.

  10. Avataaar/Circle Created with python_avatars Arief Adha says:

    hi Julian, i'm little bit curious about voltage usb meter, since you have so many type of usb meter, if you don't mind… can you plug all the meter on series and we'll see about the accuracy, and show it to us?

  11. Avataaar/Circle Created with python_avatars MrHack4never says:

    The Micro-USB port on the charger tester is for power supplies with a permanent USB lead

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