Assembling the Power bank Keep-alive based on 555 Timer

First off thank you for your purchase!  


I made this device for working with small devices to keep powerbanks/power supplies alive as they can frequently auto shutoff if they believe the device is not on as it is drawing so little power.  Once assembled the device shall look as per below (resistor colours may vary and also the case colour may vary if you've ordered one)

The 3D case design is on Thingiverse


Once inside the case the assembled unit shall look as per below


So enough of the end product, lets look at what the kit shall look like



I have where possible labelled the parts in the packaging but the current shipping parts are coloured as above which makes identification easier.  

Assembly notes

  • The resistors have no polarity so can be placed in either direction.
  • The capacitors have a polarity which can be identified in two ways.  The longest leg is the positive side and also the negative side has a white strip down that side.  On the PCB the positive is labelled and also the negative is shows with a white section on the circle to designate the negative.
  • When placing the usb connectors particularly the male ensure then are pressed into the board and level.  I recommend soldering one pin and then checking which will allow easy adjustment.
  • Take care and try not to apply the heat in one location too long.


NOTICE: I initially posted an image with R1 and R2 reversed by accident.  Above is a diagram showing which resistors and capacitors match up to the corresponding markings on the pcb.

I have created a video showing assembly which is available below

Comments

Post a Comment

Popular posts from this blog

Epever/Epsolar output to InfluxDB/Grafana

Image
I setup reporting for my EPever solar charge controller a while ago using  using the following guide at  sporadic projects .  It works but have been hankering for something a little more/different and saw a posting recently of someone using grafana and influxdb to report on their PIP based solar setup so i set about recreating this and in all honesty it wasn't as bad as i thought and after a few days i've gotten something up and running. The first step was setting up my pi, i decided to reuse a aging pi1 which caused some issues as i couldn't install things from the standard repo's so it needed a little more tinkering.  I documented this as i went so i hope this helps others using it on a pi1 also. The below shall download a precompiled influxdb setup and install it.  It will then add a custom repo to your sources list and install grafana and then start it up and enable it at startup.  Lastly it shall install php and the curl library for php and the...
Read more

Installing episode butler and sabnzbd on the Seagate Dockstar.

As i've mentioned i've gotten myself a nice Dockstar with the intention of running sabnzbd as well as episode butler.  I currently have a WHS running which works well but i've always been concerned about power usage even if it is an Atom board so have decided to go the ultra low power route which i don't mind running constantly. I've had to rebuild the dockstar a few times so thought i'd create a script to make life much easier.  I'm assuming that you've followed the excellent guide from Jeff at link i've used this a few times now and it's worked excellently.  The only thing which caught me out was forgetting to set the boot partition as active. Anyway down to the interesting stuff, if you run the following commands on your newly setup debian dockstar you will end up with a vanila install of sabnzbd as well as episode butler. cd /tmp wget " http://shne02559.pwp. blueyonder.co.uk/epinstall.sh " chmod +x epinstall.sh ./epinsta...
Read more