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Recent Status Updates
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Dalek Two Zero
The problem I'm having with 3 Daleks is space, shuffling them around between trailer & garage to allow work on them each.· 0 replies
I need the wreck out of the trailer to work on Two Zero (I should be able to work on it in the trailer, it's the front bumper that needs repairing).
I need the dome and plunger from the wreck for the new Dalek, then to replace the dome and appendage on the wreck - but that can go on a back burner, the wreck can stand down till the other two Daleks are both fixed/completed.
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Dalek Two Zero
I find an Endoscope with Screen invaluable for covering my blind spots.· 0 replies
I have been paying £12-£20 for these - now just £7 on Amazon!
The combined screen and endoscope means no connection issues.
Charges on USB C so can be plugged into a powerbrick while in use.
My bigger/costlier ones white out in bright sunlight or become useless in dark interiors.
These cheap and cheerful models seem unaffected by either of those extreme light conditions so I'll order another one for Two Zero's back up cam.
I've left the originals in too, which work in normal daylight and interior light.
https://www.amazon.co.uk/Endoscope-Industrial-Borescope-Inspection-Garosaizd074v25g-11/dp/B0D8GGKPQG?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&smid=A1W6JCMFL0W2EG&th=1
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New Posts
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By gazzer23 · Posted
Thanks for that @bertus since the op amp will be using a single rail power supply. Maybe you can do a simple schematic if possible as my one is wrong. I just tried watching a video on op amps and biasing with signle rail voltage it I got lost. Thanks for your help, -
By bertus · Posted
Hello, The opamp can not go below 0 Volts. By lifting the input to half the powersupply, you have a lot of headroom for the audio signals. Use the line out of the audio board, as that has capacitors fitted. Bertus -
By gazzer23 · Posted
Thanks, why do we need to half the input signal as the op amp like this has a gain of 1 so it should have the same voltage out or am I missing something ? Sorry for my inability to do analog electronics, it is something I wish I had learnt earlier in life but got hooked by digital electronics. -
By bertus · Posted
Hello, Place some voltage dividers at the input of the opamps. 2 resistors of 47 k will do per channel. Bertus
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