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HAPP Analog pedals to A-pac from ultimarc
AndyWarne:
The first two configurations should work. The second two definitely wont, as they connect the sensing pin directly to 5V or GND so the crosshair will go to the top or bottom and stick there.
PL1:
--- Quote from: AndyWarne on May 27, 2012, 03:28:06 am ---The first two configurations should work. The second two definitely wont, as they connect the sensing pin directly to 5V or GND so the crosshair will go to the top or bottom and stick there.
--- End quote ---
I agree, Andy, but he said he hooked it up like 1 and 2, and got the results you predicted for 3 and 4. I figured that maybe he got pedals with wire colors hooked to the wrong pot lead. It can happen to the best.
Case in point, when I got my U-Trak, two wires were swapped at the connector. Easy mistake for whoever assembled it since the colors were so close. Swapped wires and have been happy ever since.
Scott
mytymaus007:
every senario that i try all it does is start in middle then if i press pedal it moves up then gets stuck and if i change wires then it moves down and gets stuck. if i calibrate it goes to the middle and gets stuck. once it set correctly the plus should move up and down when i press the pedal right? i also have i belive its a resistor that did come with the a-pac its a little white square with two wires off it. I dont see it in the picture it has a 15 and a 63 on it. I tried that also one wire in the gnd and one in the 1up terminal. Do i need anything with the +5 terminal on the a-pac. i have it on mine but dont see it on the a-pac picture above not sure. im goin to get a meter right now! this is ridiculous! :lol
PL1:
Whoa! Just to confirm. You connected everything exactly like this and got these results.
Term. Try#1 Try #2
1down Red Black
1up Green Green
Gnd Black Red
Result Top Bottom
Then you tried configurations #3 and #4 and it still didn't work?
Pardon what probably sounds like a stupid question, but I gotta ask -- Are you sure you have potentiometer pedals? Happ makes them with microswitches, too. I thought we were looking at the wires from one pedal, but if you have 2 pedals and there are only 3 wires total, it sounds like 2 microswitches and a common ground. If there are a total of 6 wires, you've got pots and it sounds like it's time to do a little T-shooting 101.
To isolate and check potentiometer pedals:
1. Disconnect the pedal wires from the A-Pac.
2. Set the meter to Ohms. If it's not an auto-ranging meter, select the range that includes 5k ohms.
3. Connect the meter leads to the red and green pedal wires. As you press the pedal, the reading should change accordingly. If it does, go to step 4. -- If not, red and green might be 1 and 3. Proceed to step 4.
4. Connect the meter leads to the green and black pedal wires. As you press the pedal, the reading should change accordingly. If it does, go to step 5. -- If only step 4 doesn't cause change, then green and black might be 1 and 3. -- If steps 3 and 4 both didn't cause the resistance to change. there is something very wrong.
5. Connect the meter leads to the red and black pedal wires. As you press the pedal, the resistance shouldn't change. -- If resistance is steady, then red + black are 1 + 3, green is definitely 2, and the pedals seem to be wired correctly.
Let us know how it works and what range of readings you get.
Scott
P.S. Not sure what that "white square" thing is.
When you talk about it getting stuck, do you mean that when you press the pedal, the indicator moves incrementally upward with the press of the pedal until it hits the top, and when you release the pedal completely it stays at the top?
AndyWarne:
--- Quote from: mytymaus007 on May 27, 2012, 01:48:27 pm ---every senario that i try all it does is start in middle then if i press pedal it moves up then gets stuck and if i change wires then it moves down and gets stuck. if i calibrate it goes to the middle and gets stuck. once it set correctly the plus should move up and down when i press the pedal right? i also have i belive its a resistor that did come with the a-pac its a little white square with two wires off it. I dont see it in the picture it has a 15 and a 63 on it. I tried that also one wire in the gnd and one in the 1up terminal. Do i need anything with the +5 terminal on the a-pac. i have it on mine but dont see it on the a-pac picture above not sure. im goin to get a meter right now! this is ridiculous! :lol
--- End quote ---
It sounds like you might have a version of the A-PAC which we discontinued over 2 years ago. If so, most of the info here will be incorrect unfortunately. Can you drop me an email andy@ultimarc.com and we can resolve this.