Propellor proto board switch
Propability
Posts: 142
· Hi all,
Have been intersted in the Prop when it first came out and have added a demo board and the education kit to my collection .Received my order for the 5 Proto Boards and a couple of the Acessory Packs.I must say that I've never had any problem with the Prop so far and having·Objects that work
really makes it fun to use. I assembled one with the AP and went to test it out (using the prop plug ) .The prop was not seen with the switch in the middle position but it is seen on the end position . Then I tried another Proto Board but it had nothing added to it (bare) . It would not be recognized at either switch position . Then retried the first one and removed the jumper (which I had at the 5V position) and it would not be recognized also.
Am I wrong in thinking that the prop should be running (logic power) with the switch at the center position and that the jumper only controls what voltage source the servos see ?
Pete
Have been intersted in the Prop when it first came out and have added a demo board and the education kit to my collection .Received my order for the 5 Proto Boards and a couple of the Acessory Packs.I must say that I've never had any problem with the Prop so far and having·Objects that work
really makes it fun to use. I assembled one with the AP and went to test it out (using the prop plug ) .The prop was not seen with the switch in the middle position but it is seen on the end position . Then I tried another Proto Board but it had nothing added to it (bare) . It would not be recognized at either switch position . Then retried the first one and removed the jumper (which I had at the 5V position) and it would not be recognized also.
Am I wrong in thinking that the prop should be running (logic power) with the switch at the center position and that the jumper only controls what voltage source the servos see ?
Pete
Comments
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Paul Baker
Propeller Applications Engineer
Parallax, Inc.
Post Edited (Paul Baker (Parallax)) : 2/14/2007 3:38:59 AM GMT
The first thing I did when I received the 5 boards and 2 Accessory Packs ·was to assemble 1 board . I put the jumper for the servo power at the 5volt selection and just hooked up a vga monitor to test it. Noticed that the prop would not be seen at the center position of the power switch so I tried the end position and it got recognized .Loaded up the VGA demo and it works. So I decided to try a bare Proto Board (no added components ) and was not able to have it recognized at either switch position .So I went back to the first board and removed the servo jumper completely and it too would not work at either switch position . I think why no one has seen this is that most likely they did what I did (populated their board with the AP) and just pushed the switch all the way over. The test for anyone interested would be to remove the servo jumper and see if their board still works. I tried 2 other bare boards and they both refuse to work . I thought that maybe i was missing something (like a jumper for the 3.2 supply needing to be soldered in somewhere ) but did not see anything mentioning that . I would have got back to youlast night but I was at work and it was a little late.
Pete
Populated 1 with the accessory part kit and the 3 resistors required for the composite video out. Board works in both switch positions, Logic and Servo, whether or not the servo jumper is installed or not.
After seeing your post, last night, I went through all 11 other ProtoBoards. None of them populated. And made sure that the Propeller Tool would do an 'Identify' (F7). All boards worked.
Take a look at your first board for solder bridges. If I'm understanding, your posts, correctly now you can not get your Prop Plug to work with any of your boards?
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Mike
Post Edited (Mike Cook) : 2/14/2007 4:57:22 PM GMT
Pete
By the way, I love your handle (Propability).
Post Edited (Propability) : 2/14/2007 5:13:38 PM GMT
Thanks for the nod . Yeah I was about to get down to seeing what was going on . No need for the scope just some continuity checking with a meter . I let the 1st board with the VGA Demo run all night long and its still going . Loaded the Demo into the eeprom and and it will boot up but only at the last switch position . I think it would be better to look at a bare board and see why they don't work . I'm sure that this is just something simple on my part .
Pete
So decided to test all of my '6-pack'. Yep, they all passed the Identify (F7) test.
Bonus. When the 6-pack arrived, I only reached into a bag and removed the board. Not until today did I do the testing and 'dumped' one into my hand. And there was that strip of 4 rubber feet. Yep, bonus.
Nice layout for the Propeller ProtoBoard. And like the helpful silkscreening on the back side; nice touch, Parallax. First saw that on the BS2 OEM boards.
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Harley Shanko
h.a.s. designn
Pete
capacitance on the output, or that the internal capacitor is fried.