Build Questions

**lbro** · 05-06-2009, 04:33 PM

Let's start this thread so we can all help walk each other through the build. Let's try to keep all questions and answers in one place....

**g2ktcf** · 05-06-2009, 04:34 PM

Great Idea Lou!

**51fordf2** · 05-06-2009, 04:41 PM

Watch out on the resistors - the 750 Ω is very similar to the 150 Ω, and easy to switch, as they are 1/4 watt, and very small. I recommend, when you lay out your resistors, meter them.

R

**lbro** · 05-06-2009, 04:47 PM

If you open the field bag, I believe you can tell the difference by the amount, there are more of one than the other...

**51fordf2** · 05-06-2009, 04:52 PM

I also talked with David (Firegod), about the resistors required, on the SSROz'. If you use the LED's, on the Field Modules, you have to use 510 Ω resistors on the SSR's, for the triac gate, due to the voltage drop across the LED's. I was NOT looking forward to changing out a bunch of resistors, nor was I happy with having two different SSR's, one with 510 Ω, the other with 750 Ω. David suggested using a 6 volt regulator, instead of a 5 volt, and I wouldn't have to change out the resistors. I have several on order, and will be using them. This is the Mouser page for the ones he told me to use:

6 Volt regulator

R

**51fordf2** · 05-06-2009, 04:59 PM

Originally Posted by lbro

If you open the field bag, I believe you can tell the difference by the amount, there are more of one than the other...

There are 4 of the 150 Ω and one of the 750 Ω. I'm just saying that they are very small, and the color code for 750 and 150, is very close, violet-green-brown, and brown-green-brown. It's hard to distinguish between the violet and brown, due to size. You don't have to meter out the brown-red-red's, they are very apparent. Just meter out the 5 until you hit the one 750...

R

**51fordf2** · 05-06-2009, 08:54 PM

OK, PC Interfaces done...here's the order I found works great...YMMV, as everyone has their preferences, but for somebody who doesn't...I am taking pictures as I go, each step, in the hopes of making, or somebody making a Wiki for the FireGod, if there's interest.

Resistors - all
Zener Diode
Diodes
Sockets
Caps C1-4, C6
Cap C7
DB Connector
Power Jack (same time as DB Connector)
RJ45 Jacks
Cap C5
Voltage Regulator and Heat Sink

**Greg in Canby** · 05-06-2009, 09:07 PM

Originally Posted by 51fordf2

I am taking pictures as I go, each step, in the hopes of making, or somebody making a Wiki for the FireGod, if there's interest.

I'm interested and . . . pictures are good.

**g2ktcf** · 05-07-2009, 02:45 AM

Originally Posted by 51fordf2

OK, PC Interfaces done...here's the order I found works great...YMMV, as everyone has their preferences, but for somebody who doesn't...I am taking pictures as I go, each step, in the hopes of making, or somebody making a Wiki for the FireGod, if there's interest.

Resistors - all
Zener Diode
Diodes
Sockets
Caps C1-4, C6
Cap C7
DB Connector
Power Jack (same time as DB Connector)
RJ45 Jacks
Cap C5
Voltage Regulator and Heat Sink

hehehehe

Looks like getting to build mine later will be a GOOD THING!

**51fordf2** · 05-07-2009, 02:58 AM

David suggested putting C7 in after mounting the voltage regulator and heatsink, so you can get to the screw easier, but I always mount the regulator to the heatsink first, tighten it, then mount it as a unit. Easier for me, but personal choice. I'll give both in the construction article. I have both interfaces done, and 4 field modules done. I should be ready to look at getting the PICs programmed soon. Need to start from scratch, on those. Oh goody, something new to learn (and buy!!).

More to follow...

R