Search found 201 matches

by rexnanet
Fri Sep 08, 2017 5:42 pm
Forum: Projects
Topic: DLO-138 OScope
Replies: 74
Views: 3681

Re: DLO-138 OScope

Ok, I'll take a look during this weekend. Today is a "no go" :)
by rexnanet
Fri Sep 08, 2017 9:47 am
Forum: Projects
Topic: DLO-138 OScope
Replies: 74
Views: 3681

Re: DLO-138 OScope

As a final resource, I can provide the libs I use that are from the early tests and "worked".
by rexnanet
Fri Sep 08, 2017 8:45 am
Forum: Projects
Topic: DLO-138 OScope
Replies: 74
Views: 3681

Re: DLO-138 OScope

Rexanet, now I have big problems - I think with the Adafruit_ILI9341_STM - lib. The SPI graphic functioned, but I can't activate other SPI devices like MCP6S91/92 or MCP4822 (DAC). I reduced the speed to 9MHz and back to 36MHz, but with no success. I tested it with "blue-Pill" and Maple-Mini - the ...
by rexnanet
Mon Sep 04, 2017 8:16 am
Forum: Projects
Topic: DLO-138 OScope
Replies: 74
Views: 3681

Re: DLO-138 OScope

Rexanet, I think , the preamp in DSO203 is very complex , is much work. Perhaps It's easier to take a LTC6912-1 (2 channel ,gain: 0,1,2,5,10,20,100) or an LTC6912-2 with gain 01,2,4,8,16,32,64), and you need only a input stage(for dividing and protection with clamp-diodes) and a voltage spltter to ...
by rexnanet
Fri Sep 01, 2017 10:18 am
Forum: Projects
Topic: $10 O-Scope revisited
Replies: 679
Views: 67410

Re: $10 O-Scope revisited

Thanks :)
Maybe we should migrate this talk to the other post... :)
by rexnanet
Fri Sep 01, 2017 8:59 am
Forum: Projects
Topic: $10 O-Scope revisited
Replies: 679
Views: 67410

Re: $10 O-Scope revisited

I don't have a video of it right now, but I can make a video or some screenshots with certain frequencies displayed some next days. Here are screens of my weird construction, but there are no pics that would show performance: http://bildites.lv/a/sfkqpxdx#tjbrytfu A video of it working would be gre...
by rexnanet
Thu Aug 31, 2017 4:41 pm
Forum: Projects
Topic: $10 O-Scope revisited
Replies: 679
Views: 67410

Re: $10 O-Scope revisited

Thanks ThunderOwl!

Do you have a video of the F303 oscilloscope version from that forum ("Murzik")?
by rexnanet
Thu Aug 31, 2017 1:44 pm
Forum: Projects
Topic: $10 O-Scope revisited
Replies: 679
Views: 67410

Re: $10 O-Scope revisited

RogerClark wrote:
Wed Aug 30, 2017 9:12 pm
rexnanet wrote:
Wed Aug 30, 2017 12:45 pm

Is there support for F303'duino?
Use STMs Core or STM32GENERIC
Thanks!
I'll give it a try when I solder the F303 on the BluePill board.
by rexnanet
Wed Aug 30, 2017 12:45 pm
Forum: Projects
Topic: $10 O-Scope revisited
Replies: 679
Views: 67410

Re: $10 O-Scope revisited

I was thinking the same... replace the chip on the blue pill. But isn't the code from GFX better for this purpose? It's already functional right? GFXscope version v2.0 (F303 based) is not free. Well, for me it is, cause I bought "rights" to v3.0 firmware, and v2 comes as a bonus, if needed. But it ...
by rexnanet
Wed Aug 30, 2017 8:16 am
Forum: Projects
Topic: $10 O-Scope revisited
Replies: 679
Views: 67410

Re: $10 O-Scope revisited

$28 vs $18 at Aliexpress :lol: might be the faster shipping capability :D