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Taking shape.

A project log for Micro NumiTron clock

Super tiny, Micro clock using a Numitron as its display. Running off a 400mAh lipo battery.

jeremy-gJeremy g. 10/01/2015 at 08:550 Comments

I was able to get some time in tonight on laying out the schematics and a rough placement of parts on the board. The Numitron tube will site vertical as well as the PCB, have to figure out a way to make a stand for it. The numitron tube is not modeled in the renders, as I do not use 3d software i don't have any models or step files of IV-9 Numitron tubes.

If anyone knows where I may find one please let me know.

A render of the front of the clock board, the numitron will connect to the header on the bottom of the board.

The back of the board, sports the mico usb connection, lipo charger, and lipo connection. The left over space is just big enough for a 110mAh lipo cell. This is going to require learning about the power management of the Atmega line, which I have been meaning to do for quite some time. Also the USB power is Diode OR'ed with the Lipo so if the user is powering via the usb the lipo will charge but the system will use its power form USB.

The board is not fully routed yet thus the yellow air wires, Units are in MM. I am looking to have then sent to OSHpark before the end of the week. I will also update the parts list as some of the parts have changed.

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