Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
For proto's.. I do all mine in-house. It's much easier than it sounds.
I print 1 to 1 artwork on special A4 PCB transparency film in an Inkjet printer. Then expose in a UV box, or save money and use daylight. The pcb is developed, using cheap chemical and etched as normal.
Contrary to...
This looks like a good base arrangement. It is often difficult wading through loads of stuff to find specific info.
I like the idea of alternative energy, I'm already in many yahoo groups in this field, including diverse subject matter as Hydrogen electrolosis, magnetic motors etc, most of...
When I mess with reverse engineering mystery inductors/transformers I us an LCR bridge to glean info on the device. I measure the DC resistance of the winding/s then measure same on inductance setting. This gives enough useful info for duplicating the device.
Steve
Try the MAXIM MAX917. This nano power comparator has an on-chip 2.45V bandgap ref. Just add 2 resistors to set the trigger point. All in a SOT23-5 SMT package.
Steve
As the case is small, I would in this situation forget temp 'Control' as such, just fit a fan in the case rear permanently running aka pc psu style. all the guts would run much cooler. Note.. as long as the air input intake is equivalent to the fan exhaust area. Blowing on the heatsink alone...
A point of interest here... I have a microsoft FF wheel, with the 'old' gameport plug. Win XP doesn't properly support the gameport for this wheel, the 'XP' drivers for this wheel are now only for the 'later' USB versions, which is a pain. The maplin adaptor, works, but you loose the FF...
Dan_aka_jack.. I pm'd you. I think if you buy 'Direct' from AD, they'll think your a distributor/supplier. You need to ask them for distrubutors in UK.. Not AD ;) not had chance to search yet, Farnell, Arrow, RS etc may now be stocking them??
Steve
:idea: You could use a Bi-Morph piezo sensor.
These are very thin, 2 wires pre-fitted. They output 4V P to P, (albeit Hi-Impedance). Using a bi-morph in conjuction with a schmidt inverting buffer (Pico Gate type) would give a pulse output that could trigger a led etc. Size is about 15mm...
cheers phalanx, yup, would be simplest using electro-mech counter. But I'd have to 'buy' that. I have loads of LCD's, Pic's & opto-interuptors etc knocking around, so thought I'd save some pennies, plus it would be a more fun ;)
Stevie
:idea: Do a comparison of the wavelengths of normal tubes and the UV Led, if there close-ish? it should work.
The Leds higher focusing may actually be better?? I'm interested in this application too ;) Let us know if it works?
Edit## Checkout this Link >>...
I was wondering if theres a simple Pic circuit/code for a simple counter already out there? I have to wind some coils for a Faraday generator, using a power drill for the winding operation. As the turns are around several hundred, I was looking for something that would give me the incremental...
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