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Re: It's alive!

 

My uBITX is progressing a little slower than some others.? After much contemplation
I decided to do the chassis thing in two stages.? First chassis will be temporary and
serve for initial testing and as a template for a yet-to-be-built aluminium box.

For the temporary chassis I cut some plastic sheet and used hot-melt glue to fabricate
a box.? It is necessary to measure carefully in order to have the LCD protrude from the
front panel and the heat sinks against the back panel.


?
This image shows the front panel with components mounted but not yet wired.? Labels
have not yet been applied.? The upper left LED is a RED unit and will show relative
antenna current.? The lower left LED is bi-color (Red and Green) and will be show
transmit and receive mode.? The upper right LED is green and will show when power
is on.?

Other images are attached to this email.? Hopefully they will be viewable by all.

Arv
_._


On Wed, Dec 13, 2017 at 2:20 PM, Arv Evans <arvid.evans@...> wrote:
The rotary encoder that came with my uBITX does not have mechanical detents.? It is free-running.

Rotary encoders that I got earlier from Ebay vendors look the same but they do have mechanical
detents.? Some have one detent stop per 2 steps and others have one detent per 1 step.? The
2-step types require a slight software modification to make them work best for tuning applications.

Arv
_._


On Wed, Dec 13, 2017 at 12:49 PM, philip yates <phil@...> wrote:
You can make an encoder free running like a pot, just remove the ball.

I did it with an encoder that I use to tune my PC with HDSDR.

Phil - G7BZD

On Wed, Dec 13, 2017 at 7:33 PM, Jack Purdum via Groups.Io <jjpurdum@...> wrote:
It's a mess, but I have my ?BITX working now. I wanted to get it working before I put it in a case which is why there's wires all over the place as I trimmed none yet. That will happen when I move it to a case, which will likely be the plastic case from Banggood. I just finished wiring it, so I haven't had a chance to really use it, but just tuning across the band it seems very sensitive. I'm using headphones so there's plenty of volume. The encoder appears to be optical (?) as there is



feel of detents when tuning. To all those who are waiting, it will be worth it!!

Jack, W8TEE




Front_Panel_Components_Mounted_But_Not_Yet_Wired.png
LCD_in_place.jpg
Left_Side_View_Before_Wiring.jpg
Main_uBITX)_PCB_Bolted_inside_Temporary_Chassis.jpg
many_little_holes_to_make_a_big_hole.jpg
Mark_LCD_on_Inside_and_Transfer_Marks_to_Outside.jpg
Right_Side_View_Before-Wiring.jpg
Sit_Radiouno)on_top_of_socket_to_mark_LCD_placement.jpg

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