Search found 38 matches

by ninja2
Mon Jun 01, 2015 10:39 pm
Forum: BTSH: Bluetooth Shield
Topic: How Many
Replies: 5
Views: 2482

Re: How Many

cool thanks.
you should consider adding it to your shields collection page:
http://www.freetronics.com.au/collections/shields
by ninja2
Mon Jun 01, 2015 10:14 am
Forum: BTSH: Bluetooth Shield
Topic: How Many
Replies: 5
Views: 2482

Re: How Many

ah, so you're not selling individual Bluetooth shields anymore? if true, !darn! and why not?
I guess that's why i couldn't see it on your "Shields" page
by ninja2
Mon Jul 28, 2014 1:16 am
Forum: Module Discussion
Topic: PR28V PoE Power Regulator is it really only 1A?
Replies: 15
Views: 5730

Re: PR28V PoE Power Regulator is it really only 1A?

Good point. What sort of protection are you thinking of - capacitors or diodes (or both) ? Although I may do the motors using your infra-red temp sensors. The motor's shape is not ideal for attaching DS18B20's , using IR would add benefit of separating motor from sensor and those nasty induction spi...
by ninja2
Sat Jul 26, 2014 1:56 am
Forum: Module Discussion
Topic: PR28V PoE Power Regulator is it really only 1A?
Replies: 15
Views: 5730

Re: PR28V PoE Power Regulator is it really only 1A?

Gudday Angus
Thanks, I've attached my "cheeky" pdf ;)

The circuit hasn't actually been connected to the scooter yet, only to batteries. I'm still developing (forever!).

cheers
by ninja2
Thu Jul 24, 2014 11:02 am
Forum: Module Discussion
Topic: PR28V PoE Power Regulator is it really only 1A?
Replies: 15
Views: 5730

Re: PR28V PoE Power Regulator is it really only 1A?

Angus, Sorry for slow reply, been flat out lately. I just tried to attach a PDF of the circuit, but your upload attachment interface tells me "extension PDF is not allowed" in bold red letters ... really? are those cheeky PDF files so dangerous ? The circuit is my electric scooter instrumentation pr...
by ninja2
Wed Jul 16, 2014 9:32 am
Forum: Module Discussion
Topic: PR28V PoE Power Regulator is it really only 1A?
Replies: 15
Views: 5730

Re: PR28V PoE Power Regulator is it really only 1A?

Angus, there were some similarities, but not the same way. After the first one failed I carefully reviewed and rewired the circuit (looking for possible shorts etc) and added the fuse. In both cases I tested the circuit first into a power resistor in place of the PR28V first, and then with the PR28V...
by ninja2
Tue Jul 15, 2014 9:14 am
Forum: Module Discussion
Topic: PR28V PoE Power Regulator is it really only 1A?
Replies: 15
Views: 5730

Re: PR28V PoE Power Regulator is it really only 1A?

Angus When the 2nd blow out occurred I studied the circuit carefully to see if there was an unexpected short or other problem. But I didn't find anything, and this circuit had been working for a few hours just fine. I will take up your suggestion and take it back to Jaycar for a replacement. I'm qui...
by ninja2
Sun Jul 13, 2014 9:25 am
Forum: Module Discussion
Topic: PR28V PoE Power Regulator is it really only 1A?
Replies: 15
Views: 5730

Re: PR28V PoE Power Regulator is it really only 1A?

I've managed to blow up two of these 28V units during prototype testing. On the second unit I put a precautionary 1A fuse on the load side for protection. The input is 26V (two 12V batteries in series, fully charged), and I had just tested the circuit successfully into 12 ohm load (around 600mA load...
by ninja2
Wed Jul 09, 2014 9:11 am
Forum: Module Discussion
Topic: PR28V PoE Power Regulator is it really only 1A?
Replies: 15
Views: 5730

Re: PR28V PoE Power Regulator is it really only 1A?

thanks for the quick ressponse angus, much apreciated