View source for ER-BEZIER-CV

== Features ==

* From [https://note.com/solder_state/n/n39aacefd73a3 HAGIWO Bezier Random CV Generator]
* Built from existing Land Boards cards
** [[ER-PROTO-02]] Front panel
** [[ER-PROTO-02]] Controls cards
** Depopulated [[ER-MOZZI-DB]] card
* [[Arduino_Nano|Arduino Nano]]

=== NANO Pinout ===

[[File:Arduino-nano-pinout-877PX.png]]

=== HAGIWO Schematic ===

[[FILE:HAGIWO_BEZIER_CV_SCHEMATIC-720PX.png]]

=== HAGIWO Front Panel ===

[[FILE:HAGIWO_BEZIER_PANEL-CROPPED-720PXV.png]]

== Front Panel Pots/Jacks ==

* 4 pots, 3 jacks

=== RV1 - Freq ===

* Arduino Analog 0

=== RV2 - Curve ===

* Arduino Analog 1

=== RV3 - Sigma ===

* Arduino Analog 2

=== RV4 - Level ===

* Arduino Analog 3

=== J4 - Freq CV In ===

* Arduino Analog 7

=== J5 - Curve CV In ===

* Arduino Analog 6

=== J6 - PWM Output ===

* Arduino Digital D10

== Card/Card Connectors ==

=== J7 - Jacks Connector ===

[[file:ER-BEZIER-CV_J7_JACKS.PNG]]

=== J8 - Pots Connector ===

[[file:ER-BEZIER-CV_J8_POTS.PNG]]

== Other Connectors ==

=== Eurorack Connector ===

* 2x5, uses +12V only

[[FILE:ER-BEZIER-CV_J9_EURORACK_PWR.PNG]]

== Software ==

* [https://github.com/land-boards/lb-Arduino-Code/tree/master/LBCards/SYNTHS/ERBEZIERCV/ERBEZIER_POTS_CHECK Pot Check]
* [https://github.com/land-boards/lb-Arduino-Code/blob/master/LBCards/SYNTHS/ERBEZIERCV/ERBEZIERCV.ino Arduino Code]

== Video ==

<video type="youtube">yJ8VUiZf6Yg</video>

== Parts List ==

=== ER-PROTO-CTLS ===

[[file:ER-PROTO-02-CTLS_FRONT_REAR_CAD.png]]

* Install jumpers RV1-RV4 PWR/GND (J10, J11, J13, J14, J16, J17, J19, J20)
** Solder blobs or tiny jumpers
* R1-R4 = 1K
* R7, R15, R17 = 0
* RV1-RV4 = B100K
* J4-J6 = PJ398SM
* J2, J6 reversed on schematics (on ER-MOZZI-DB card)
** Add jumper J7-4 (signal: J2-T) to J7-8 (signal: J6-T)

=== ER-MOZZI-DB ===

[[file:ER-MOZZI-DB_FRONT_BACK_CAD-720px.png]]

{| class="wikitable"
! Find
! Qty
! Ref Des
! Part Number
! 
! Find
! Qty
! Ref Des
! Part Number
|-
| 1
| 2
| R5, R12
| 10K
| 
| 7
| 7
| C2, C3, C5, C6, C11, C13, C14
| 0.1uF
|-
| 2
| 2
| R6, R13
| 100K
| 
| 8
| 1
| C7
| 10uF
|-
| 3
| 1
| R9
| 470
| 
| 9
| 1
| C8
| 47uF
|-
| 4
| 1
| R14
| 0
| 
| 10
| 1
| C15
| 4.7uF (mind polarity GND up)
|-
| 5
| 1
| R15
| 10
| 
| 11
| 1
| J7
| HEADER, 2x8
|-
| 6
| 5
| D5, D6, D9-D11
| BAT41
| 
| 12
| 1
| J8
| HEADER, 2x10
|-
| 
| 
| 
| 
| 
| 13
| 1
| J9
| CONN, IDC, 2X5
|-
| 
| 
| 
| 
| 
| 14
| 1
| A1
| [http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf Arduino_Nano_v3.x]
|-
|}