Search found 210 matches

by danlee58
Mon Nov 23, 2015 3:29 am
Forum: Power Issues
Topic: Diode D3 Blown?
Replies: 2
Views: 14431

Diode D3 Blown?

I had my SuperPro board powered through the USB connection. I inadvertently shorted the 5 Volts to ground. I think that I drew excessive current through D3. Now my board is dead.
Can It be repaired?

I could try to power it with another source through another port to see, if that works.
by danlee58
Wed Nov 04, 2015 2:22 pm
Forum: Projects
Topic: 4 Channel Timer/Counter
Replies: 26
Views: 59200

Re: 4 Channel Timer/Counter

I purchased a Logic Analyzer Kit from www.chronovu.com. It's very basic, but should be adequate for my needs. As long as there are no surface mount ICs to solder, I will not have a problem assembling the kit. It's USA made, but competitive with most Chinese offerings. I need it for timing analysis, ...
by danlee58
Mon Nov 02, 2015 9:12 pm
Forum: Projects
Topic: 4 Channel Timer/Counter
Replies: 26
Views: 59200

Re: 4 Channel Timer/Counter

I have my device built. Now I need a Logic Analyzer to debug it. My ancient HP scope won't do the job. I am looking for an inexpensive USB Logic Analyzer with PC software(Windows 10).

Is there an Arduino Shield that will do the job?
by danlee58
Tue Oct 27, 2015 2:10 am
Forum: Projects
Topic: 4 Channel Timer/Counter
Replies: 26
Views: 59200

Re: 4 Channel Timer/Counter

I generate an Interrupt on Match & set Tx_MCR to 0x40 to stop the timer. The external match pin should stay True until I reset the timer elsewhere in the program.

I'm still not sure how to get the External Match pin to go Low True on a match. Do I have to output a Zero in my interrupt routine?
by danlee58
Mon Oct 26, 2015 2:38 pm
Forum: Projects
Topic: 4 Channel Timer/Counter
Replies: 26
Views: 59200

Re: 4 Channel Timer/Counter

I need a Low True output on Match 0.0 (P1.28), and Match 3.0, (P0.10).
How can I make the External Match Outputs Low true?

How long does the Match Pin stay true?

Should I set Tx_MCR to 0x040 to stop the timer, until I start it again, so the Match Pin stays True?
by danlee58
Sat Oct 24, 2015 4:49 pm
Forum: Projects
Topic: 4 Channel Timer/Counter
Replies: 26
Views: 59200

Re: 4 Channel Timer/Counter

I'm only going to use 2 Match pins. I'll use P1.28, and P0.10. I'll multiplex the outputs and double the duty cycle of MR0.0, and MR3.0. I need to use Timer1 as a Capture Timer. I want to start Timer1 on the falling edge of P1.18, and capture TC1 on the rising edge of P1.18. Should I just poll & cle...
by danlee58
Sat Oct 24, 2015 11:23 am
Forum: Projects
Topic: 4 Channel Timer/Counter
Replies: 26
Views: 59200

Re: 4 Channel Timer/Counter

I need 4 Match Pins. P1.28 is Mat0.0, P1.25 is Mat1.0, P0.10 is Mat 3.0, but there is no Arduino compatible pin for Match2 Register.

How can I get 4 Match Register output pins?
by danlee58
Thu Oct 15, 2015 11:28 am
Forum: Projects
Topic: 4 Channel Timer/Counter
Replies: 26
Views: 59200

Re: 4 Channel Timer/Counter

I'll stick with the SuperPro. The money savings for the ProPlus is not worth the risk that I'll need something that isn't available with the ProPlus for a single quantity. If I ever have a market for this, I can look at the ProPlus again.
by danlee58
Wed Oct 14, 2015 10:11 am
Forum: Projects
Topic: 4 Channel Timer/Counter
Replies: 26
Views: 59200

Re: 4 Channel Timer/Counter

I have code for a Coridium SuperPro board from a previous project. I used the SuperPro on that project because I needed a DAC output. I could save some money, by using a ProPlus on this project. Will my setup code be different from the SuperPro? It may be worth the extra money, if I can reuse some c...
by danlee58
Mon Oct 12, 2015 12:54 am
Forum: Projects
Topic: 4 Channel Timer/Counter
Replies: 26
Views: 59200

Re: 4 Channel Timer/Counter

I use PCB123 for my PCB layout & schematic capture. I did a custom Arduino board from Sunstone Circuits for a recent project. My hand wired board works fine, but the PCB has a noise problem. It's probably ground runs, but I haven't debugged it. I purchased 10 boards, but only built up one. I could l...