Search found 3 matches

by dposea
Mon Feb 18, 2019 5:38 am
Forum: DSO 068
Topic: Can't open com port
Replies: 1
Views: 10599

Re: Can't open com port

I got the com port to open b installing the virtual box guest addition software in my windows VM. I get this: Start download $ Send reset command: [7E ] > Start connect $ <1> Send connect key: 64 $ <2> Send connect key: 64 $ <3> Send connect key: 64 : 0C 82 .‚ : 4C 0E L. : 4C L $ <4> Send connect ke...
by dposea
Sun Feb 17, 2019 6:35 pm
Forum: DSO 068
Topic: Can't open com port
Replies: 1
Views: 10599

Can't open com port

I need yo update the firmware because any button pressed turns on holld. EEPROM forced reset did not fix that. Should I attempt a flash via the programming header using an arduino nano? I have several on hand. I had many problems getting this to work but the biggest problem was a bad crystal, You ne...
by dposea
Sun Feb 17, 2019 6:16 pm
Forum: DSO 068
Topic: Everything seems ok, but V5 is -3,6V, not ~1,6V
Replies: 1
Views: 11205

Re: Everything seems ok, but V5 is -3,6V, not ~1,6V

V4 is supposed to be 1.6v I believe, If it is not R12 is probably a 10K resistor not 120. It's very hard to tell them apart by colors. I know because I messed them up myself. Once fixed I started getting a signal.