Talk:ProDev DDT: Difference between revisions

Latest revision as of 22:00, 25 July 2023

Please post your support questions here and ReActiveMicro or someone from the Community will be glad to assist you!

Here is a pic of the top silk layer with all the location markings and values.

Parts list and locations

Capacitors

C1 10 25v small green bulb
C6 471 flat brown
C14 *7501 brown bulb
C16 & C18 221 flat brown x2
C19 22uf 50v electrolytic can
All other C positions: 104 tantalum cap x12

Resistors

R4 & R10 Brown Black Brown 100 ohms x2
R9 Brown Black Red 1k
All other R positions: Brown Black Orange 10k x7

Other

Q1 2N3904 Transistor (Not needed for IIgs version)
DDT1 DM74S287N
DDT2 DM74S571N

Questions

Is there a build instructions somewhere? The technical folder includes photo of a required wire... This should be called out elsewhere somehow because I had no idea it was necessary from looking at the main wiki page.

@@ Line 1: / Line 1: @@
 Please post your support questions here and ReActiveMicro or someone from the Community will be glad to assist you!
+Here is a pic of the top silk layer with all the location markings and values.
+<gallery class="left" widths=450px heights=250px>
+File:2022-10-03_-_ProDEV_DDT_-_Silk_Layer.png
+</gallery>
 ==Parts list and locations==
@@ Line 15: / Line 20: @@
 R9 Brown Black Red 1k<br />
 All other R positions: Brown Black Orange 10k x7<br />
+===Other===
+Q1 2N3904 Transistor (Not needed for IIgs version)<BR>
+DDT1 DM74S287N<BR>
+DDT2 DM74S571N<BR>
 ==Questions==
-) I received a larger green capacitor with markings 2A104J but I have no idea where it should go as I don't see this in the photo. Is this really part of the kit? If so, where does it go?<br />
+Is there a build instructions somewhere? The technical folder includes photo of a required wire... This should be called out elsewhere somehow because I had no idea it was necessary from looking at the main wiki page.
-) Please confirm where these capacitors should be located as the photo is not clear:<br />
-C1: 10 25v small green bulb <br />
-C14: *7501 brown bulb<br />
-) The photo shows transistor, but I did not receive one in my kit. What is the part number of this?<br />
-) WRT the socket at B1. Is the top left pin, connected to second pin by a trace on the back of the board?<br />
-<hr>
->Henry from RM:<br />
-- 2A104J would be a 104 / .1uf / 100nf cap. Checking my kits I don't see any parts like that. I wonder if this is from an older kit?<br />
-- C1 bottom left corner of the PCB, below LS09, 10uF. C14 is top right, above DDT2, 1uF.<br />
-- Odd. Checking a kit and I see Q1 in it. Sorry about this issue. PN: 2N3904. Let me know if you need to order one and the cost and I can refund that to you.<br />
-- The LS109, and correct. It looks like Pin15-16 are connected.<br />
-Hope this helps!<br />