improvements on Route 2
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That's all for now, this guide will improve over time! (TODO!)
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That's all for now, this guide will improve over time! (TODO!)
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** Route 2: Dactyl Hand-Wiring Guide
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** Route 2: Dactyl Hand-Wiring Guide
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Step 1: Creating the rows
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*** Step 1: Creating the rows
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Using the copper wire you solder each row together, notice how the thumb-part gets its own
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row. If you take a close look you can see how I did do a messy job soldering, I had to redo
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some of the parts because they weren't soldered properly. Do this for both sides. Which ones of
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the pins you chose for the row doesnt matter, but for it to look clean you should decide for
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either one of them
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Using the copper wire you solder each row together, notice how the thumb-part gets its own
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[[file:wiring_create_rows.jpg]]
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row. If you take a close look you can see how I did do a messy job soldering, I had to redo
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some of the parts because they wouldn't be stable enough. Do this for both sides. Which ones of
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the pins you chose for the row doesnt matter, but for it to look clean you should decide for
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either one of them
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[[file:wiring_create_rows.jpg]]
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[[file:wiring-create-rows-both-sides.jpg]]
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[[file:wiring-create-rows-both-sides.jpg]]
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You might want to go ahead and test each one of the 70 switches with a multimeter.
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You might want to go ahead and test each one of the 70 switches with a multimeter.
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[[file:wiring-create-rows-testing.jpg]]
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[[file:wiring-create-rows-testing.jpg]]
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*** Step 2: Create the columns
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The next step is to create the columns by soldering the diodes.
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The next step is to create the columns by soldering the diodes. Notice which way these diodes
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Notice which way these diodes are directed here. First of all, they are all wired with the
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are directed here, the way these diodes are directed, we have to have a firmware that "drives
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black part towards the switch, it is important that you follow that pattern for all of the
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the rows". (TODO: insert diagram here) Luckily in our firmware "ergodox-firmware" we have the
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switches. The end where that color-mark is denotes the direction of the diode. The way these
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option that adapts to that. However if you want to try and use the "tmk_keyboard" firmware
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diodes are directed, we have to have a firmware that "drives the rows", which means the
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which seems to be also interesting you want to wire the diodes the other way. This way the
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electricity can go from the column through the pressed switch through the row, but not the
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"columns are driving". As a side note, for some reason the tmk_keyboard firmware things of rows
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other way around (TODO: insert diagram here to explain this further).
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as columns and the other way around, so if you look through the source code it will also see
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"drive rows", even though that means "driving columns".
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The tmk_keyboard firmware could also be used for this kind of wiring, but it would have to be
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Luckily in our firmware "ergodox-firmware" we have the option that adapts to that. However if
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rewritten, maybe in a beautiful way, such that it can also "drive rows". However I didnt go
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you want to try and use the "tmk_keyboard" firmware which seems to be also interesting you
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ahead and perfomed that rewriting, so I had to stick with the "ergodox-firmware". In retrospect
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want to wire the diodes the other way. This way the "columns are driving". As a side note, for
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I'd wish I had wired the diodes the other way around.
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some reason the tmk_keyboard firmware things of rows as columns and the other way around, so
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if you look through the source code it will also see "drive rows", even though that means
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"driving columns".
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The first picture doesnt show how the 6 thumb-keys are actually individually connected to the 6
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The tmk_keyboard firmware could also be used for this kind of wiring, but it would have to be
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main columns.
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rewritten, maybe in a beautiful way, such that it can also "drive rows". However I didnt go
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ahead and perfomed that rewriting, so I had to stick with the "ergodox-firmware". In retrospect
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I'd wish I had wired the diodes the other way around.
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[[file:wiring-create-columns-left.jpg]]
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The first picture doesnt show how the 6 thumb-keys are actually individually connected to the 6
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main columns.
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This second picture shows how the 6 thumb-keys are actually connected to the 6 main columns.
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[[file:wiring-create-columns-left.jpg]]
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[[file:wiring-create-columns-right.jpg]]
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This second picture shows how the 6 thumb-keys are actually connected to the 6 main columns.
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TODO: Insert diagram of how the thumb-keys are connected to the main clumns.
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[[file:wiring-create-columns-right.jpg]]
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The next step is to wire the Teensy 2.0 and the MCP 23018 in place.
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TODO: Insert diagram of how the thumb-keys are connected to the main clumns.
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Everything necessary for that really is the following circuit diagram
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[[file:circuit-diagram.svg]]
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*** Put the Teensy and the MCP in place
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This next step is to wire the Teensy 2.0 and the MCP 23018 in place.
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Everything necessary for that really is the following circuit diagram
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[[file:rows-and-columns-connected-to-chips.jpg]]
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[[file:circuit-diagram.png]]
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Things to note here:
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[[file:rows-and-columns-connected-to-chips.jpg]]
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- The columns for the MCP go from 0 to 6, the columns for the Teensy go from 7 to D (counting
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in hexadecimal) which makes great sence, since the MCP is left to the Teensy and we read from
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Things to note here:
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left to right.
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- The columns for the MCP go from 0 to 6, the columns for the Teensy go from 7 to D (counting
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- When debugging this and using the ergodox-firmware, both sides have to be wired completely
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in hexadecimal) which makes great sence, since the MCP is left to the Teensy and we read from
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and actually connected, dont expect the keyboard to work before that. The reason being is how
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left to right.
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the ergodox-firmware stops completely if either the Teensy or the MCP weren't initiated
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- When debugging this and using the ergodox-firmware, both sides have to be wired completely
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properly.
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and actually connected, dont expect the keyboard to work before that. The reason being is how
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- In the circuit-diagram the columns on the left side (MCP side) actually go from GPA5 to INTA
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the ergodox-firmware stops completely if either the Teensy or the MCP weren't initiated
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(TODO: Update the circuit diagram and get rid of this point)
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properly.
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- The LEDs are handy for debugging, definately go ahead and connect those. When the keyboard
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- In the circuit-diagram the columns on the left side (MCP side) actually go from GPA5 to INTA
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starts successfully two of the LEDs light up shortly.
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(TODO: Update the circuit diagram and get rid of this point)
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- From the Teensy over to the MCP go exactly 4 connections. The blue, the red and the two green
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- The LEDs are handy for debugging, definately go ahead and connect those. When the keyboard
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ones. This is done using the TTRS jacks and cable (TODO: Add picture here how the jacks are
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starts successfully two of the LEDs light up shortly.
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wired)
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- From the Teensy over to the MCP go exactly 4 connections. The blue, the red and the two green
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- Yes, the connection from B4 to VCC doesnt seem to make any sense, but the B4 port actually
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ones. This is done using the TTRS jacks and cable (TODO: Add picture here how the jacks are
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gets used directly in the ergodox-firmware, so just connect those connections that make no
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wired)
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sense on first sight and either dont question it or find out why this is necessary by going
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- Yes, the connection from B4 to VCC doesnt seem to make any sense, but the B4 port actually
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through the firmware in great detail.
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gets used directly in the ergodox-firmware, so just connect those connections that make no
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sense on first sight and either dont question it or find out why this is necessary by going
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through the firmware in great detail.
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