Repost: Martin's PPM tester

Arduino projects on the go
Martin
Posts: 744
Joined: 16 Feb 2018, 14:11
Location: Warwickshire

Re: Repost: Martin's PPM tester

Post by Martin »

Well done on getting it working, Al; your version looks great.

I don't have to have the switch in the 'on' position to charge mine, so I must have put the switch in the line on the output side of the voltage booster. The disadvantage of doing it my way is that there's a slight drain on the battery even when it's switched off, because the voltage booster is always boosting the battery voltage - though supplying no current. The drain must be very low though, because I've left my unit in my transmitter case for periods up to about six months without charging, after which it still works. In fact I've never run it flat yet, so maybe it would last a year or more.

I don't think your way of wiring the switch will cause any problems with the Digispark or display: if I ever make another one, I might wire the switch the same way you have - then I'd know there was zero drain on the battery when it's not in use.
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kalle123
Posts: 35
Joined: 02 Feb 2021, 07:06

Re: Repost: Martin's PPM tester

Post by kalle123 »

Stumbled over your ATTiny code for the ppm tester, Martin.

Just a quick test here using the board manager from https://github.com/SpenceKonde/ATTinyCore

Direct upload with an USBasp adapter without bootloader, still no signal connected, but seems to work ;)

https://imgur.com/s7DAzGp.png

br Karl
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