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Port write not updating pin state
Hi John, Ahh .. I note there is now a add tags button that has to be clicked. I have not sent a post since the new forum was commissioned. I am still a avid atheist, anti-gun...
Wednesday, 7 June 2017 - 23:18
Port write not updating pin state
If the OP had used a logic probe, the problem would have been diagnosed and fixed in a faction of the time that it finally took! Lee
Wednesday, 7 June 2017 - 10:19
FTDI and Prolific....only two games in town?
I have used 100's of counterfeit Arduino Nano's which use CH340.  They are rock solid! The CH340's are so cheap there is no point in knocking them off, so that it is unlikely...
Thursday, 7 January 2016 - 07:25
DM87S185N 2048 X 4 PROM programming procedure
I have actually done that previously with an ATmega8 DIP, but it really needed an additional I/O lines (I was using the /RES line as an IO...grrrrrrr).   However a Arduino...
Friday, 13 February 2015 - 00:34
DM87S185N 2048 X 4 PROM programming procedure
Thanks Brian, Yes there have been some EPROM adapters used for a while because PROMS were  hard to get.  Since then, quite a few PROMS have become available as these...
Thursday, 12 February 2015 - 20:46
DM87S185N 2048 X 4 PROM programming procedure
Thanks all!  Yes there seems to have been several manufacturers have a go at these things. The metal chemistry was quite different in them too.  No wonder each...
Thursday, 12 February 2015 - 09:57
Beginners Oscilloscope
"But do you have any idea just how many projects were designed and debugged with that old analog scope?"  Ah... I am in love again.  Looking at that old CRO...
Friday, 2 January 2015 - 07:30
Beginners Oscilloscope
The OP initially mentioned that he wanted a CRO for "basic" electronics & AVR projects.  I assume that means also some basic learning of electronics which is essentially...
Thursday, 1 January 2015 - 09:59
Clothes Dryer Repair Help - Burned PCB pics...
You are spot on Kartman!   I also have seen this type of fault many times.  You really don't want the current flowing through long paths of solder. The joint heats up-...
Thursday, 1 January 2015 - 09:42
Wanted: low-end oscilloscope for use in repair and testing environmennt
No worries, it is sometimes difficult to know where to start.  Networking is important.  Once you are networked, the "tree shaking" usually turns things up.  Have a...
Tuesday, 30 December 2014 - 23:14
Wanted: low-end oscilloscope for use in repair and testing environmennt
And in Cambridge there is a Amateur Radio Club ( as you would expect as Cambridge has had a long association with radio). I am sure that someone there will help you will turn up a...
Tuesday, 30 December 2014 - 08:08
For loop
joeymorin wrote:LDEVRIES wrote:Koshchi wrote:Quote:When you have no code inside the for loop, the optimizer will optimize it out. No it won't.I'm f.........ed! I was certain it...
Thursday, 21 August 2014 - 22:33

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