Recent content by Paul Hunt

I would have thought that as long as the cross sectional area of the damper vent is the same, or a little larger than the area of the outlet, then there should be no significant reduction of air flow. We are, after all, not concerned with very high flow rates, or turbulent versus laminar air flow?

There is also element14 (aka Farnell) http://au.element14.com/ They sell in small quantities. As is so often the case here, however, pricing can be quite steep compared with other countries.

Thanks everyone. I am inclined to over-specify (within reason) rather than under. I'll see what I can source (or build) in the 1.5 to 2.0 amp range.

I don't have a supply yet. I wasn't entirely sure how much juice the Pi + HM board would draw, and also how much current the HM board could source for the fan. I had only taken a quick peep at the schematic and misread it as the 170 driving the fan. :o My blower is 20cfm. I might go for...

I have two questions regarding power for the HeaterMeter: Situation: I have a larger blower to drive a UDS, with specified current required 520mA. Question 1. Will the HeaterMeter onboard FET be adequate for this, or should I use another device? I checked the specs for the BS170, and saw...

Charlie, sorry to be Caption Obvious, but you will need to extract any solder which is blocking through holes. Your solder sucker should be suitable for this. I would advise you to thoroughly clean (or re-clean) your boards - use isopropyl alcohol or circuit board cleaning spray and a cotton...

Try 3D Hubs www.3dhubs.com This is a web-based facility which connects people who need 3d printing with local owners of 3D printers who are willing to do print jobs. The system set up for uploading print files, getting a quote, and making payment by paypal. I found a local printer last week...

You can get stuff called Chip Quik (that's how it is spelled). It is designed to assist with removal of SMD components, but I have occasionally found it helpful when removing components from through-hole plated boards. Basically, you apply it to the solder joins, and it holds the solder in a...

Aubrey, are you able to read schematics? If so, just trace the power circuit from the jack inwards with your voltmeter, to locate the point of failure. I'd be making sure that all your various wire connections have continuity. Some of the bared ends look rather long - is something shorting...