Em quinta-feira, 9 de janeiro de 2003 20:39:39 UTC-2, JTE escreveu:
Line 6 POD Floor Board Bank Controller Schematic. Due to the
versatility of the POD, I figured that this circuit was worth posting.
I bought a FB4 and took it apart to see if I could understand how the switches are coded. I originally wanted to add a remote "Tuner"
switch, but I still haven't figured out how they do that. What I
learned is that Line 6 used a nice strategy for detecting the A, B, C,
D, BANK UP and BANK DOWN switches in the full floor board. I expect
that the POD has some sort of analog to digital converter to detect
which bank switch is active. This allows them to use only one wire
(two including a ground) to detect 6 different switches. The
schematic to make a POD bank controller with a BANK UP switch is shown
below. As seen, it is very simple. Here is what I did. I bought an
old Zoom foot pedal controller (5 switches) from a used equipment
store. I disconnected all the traces around the switches (momentary)
and added the resistors shown in the schematic. To connect the floor
board to the POD, I bought an RJ45 female connector in a wall mount
housing from Radio Shack. I cut out the connector, epoxied it to the
side of the Zoom pedal board and wired it as shown. Then I just used
an internet cable to connect the floor board to the POD. If I were to
do it again, I would cut off the end of the internet cable and use a
ź" jack to connect the ground (pin 6 and 8) and signal (pin 3) to the
floor board. Using a ź" jack would be more sturdy than using the
epoxied RJ45 connector. I can't remember the resistor value that
would be used for a BANK DOWN switch (200 ohm?), but it would be added
in series after the 3 k resistor. If you want to figure it out, put a
10k pot in place of the 3 k resistor and turn the pot (while hitting
the switches) to get the BANK DOWN to occur. Remove the POT and use a
meter to figure out what value is needed. The FB4 is not very
expensive (~$70.00) and you get LED indicators to show you which bank
is selected, but you do not get a BANK UP switch. There are no LED's
here, but if you have an old floor board around and are short on cash,
this is inexpensive way to make a basic POD controller. If there are
any questions, contact me at jelliott@nist.gov.
**********RJ45**************
* | | | | | | | | *
* | | | | | | | | *
* 8 7 6 5 4 3 2 1 *
********** **********
* *
**********
RJ45 jack on floor board (looking at front of jack). To make sure you
are wiring this correctly, lines from the POD that connect to 6 and 8
on the floor board should have 0 resistance between them. Both lines
are grounded in the POD and on the floor board. P3 from the resistor
series below, goes to pin 3 of the RJ45 jack. P8 and P6 are grounded.
VVVV is resistor, G is ground
P8 --------G
P6 --------G
360ohm 200ohm 240ohm 360ohm 3kohm 10kohm P3---VVVV--|--VVVV--|--VVVV--|--VVVV--|--VVVV--|--VVVV---G
\ \ \ \ \
\ \ \ \ \
| | | | |
| | | | |
G G G G G
Ch. A Ch. B Ch. C Ch. D BANK UP
Em quinta-feira, 9 de janeiro de 2003 20:39:39 UTC-2, JTE escreveu:
Line 6 POD Floor Board Bank Controller Schematic. Due to the
versatility of the POD, I figured that this circuit was worth posting.
I bought a FB4 and took it apart to see if I could understand how the switches are coded. I originally wanted to add a remote "Tuner"
switch, but I still haven't figured out how they do that. What I
learned is that Line 6 used a nice strategy for detecting the A, B, C,
D, BANK UP and BANK DOWN switches in the full floor board. I expect
that the POD has some sort of analog to digital converter to detect
which bank switch is active. This allows them to use only one wire
(two including a ground) to detect 6 different switches. The
schematic to make a POD bank controller with a BANK UP switch is shown
below. As seen, it is very simple. Here is what I did. I bought an
old Zoom foot pedal controller (5 switches) from a used equipment
store. I disconnected all the traces around the switches (momentary)
and added the resistors shown in the schematic. To connect the floor
board to the POD, I bought an RJ45 female connector in a wall mount
housing from Radio Shack. I cut out the connector, epoxied it to the
side of the Zoom pedal board and wired it as shown. Then I just used
an internet cable to connect the floor board to the POD. If I were to
do it again, I would cut off the end of the internet cable and use a
ź" jack to connect the ground (pin 6 and 8) and signal (pin 3) to the
floor board. Using a ź" jack would be more sturdy than using the
epoxied RJ45 connector. I can't remember the resistor value that
would be used for a BANK DOWN switch (200 ohm?), but it would be added
in series after the 3 k resistor. If you want to figure it out, put a
10k pot in place of the 3 k resistor and turn the pot (while hitting
the switches) to get the BANK DOWN to occur. Remove the POT and use a
meter to figure out what value is needed. The FB4 is not very
expensive (~$70.00) and you get LED indicators to show you which bank
is selected, but you do not get a BANK UP switch. There are no LED's
here, but if you have an old floor board around and are short on cash,
this is inexpensive way to make a basic POD controller. If there are
any questions, contact me at jelliott@nist.gov.
**********RJ45**************
* | | | | | | | | *
* | | | | | | | | *
* 8 7 6 5 4 3 2 1 *
********** **********
* *
**********
RJ45 jack on floor board (looking at front of jack). To make sure you
are wiring this correctly, lines from the POD that connect to 6 and 8
on the floor board should have 0 resistance between them. Both lines
are grounded in the POD and on the floor board. P3 from the resistor
series below, goes to pin 3 of the RJ45 jack. P8 and P6 are grounded.
VVVV is resistor, G is ground
P8 --------G
P6 --------G
360ohm 200ohm 240ohm 360ohm 3kohm 10kohm P3---VVVV--|--VVVV--|--VVVV--|--VVVV--|--VVVV--|--VVVV---G
\ \ \ \ \
\ \ \ \ \
| | | | |
| | | | |
G G G G G
Ch. A Ch. B Ch. C Ch. D BANK UP
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