MD24 Firmware Version 1.2 User Manual
Contents
1. 11 Omni events on all channels are used to update output state 2010 Sonarcana LLC Page 8 17 Highly Liquid Figure 2 2 Default Equivalent MIDI Configuration SysEx Message MD24 Firmware Version 1 2 Section Bytes Hex Meaning Header F0 00 01 5D 03 01 Fixed Data Pulse Length 00 Note duration determines note trigger pulse length Output 0 Configuration 0001 003C Note Trigger Note 60 Middle C Output 1 Configuration 01 01 00 3D Note Trigger Note 61 Output 2 Configuration 02 01 00 3E Note Trigger Note 62 Output 3 Configuration 03 01 00 3F Note Trigger Note 63 Output 4 Configuration 04 01 00 40 Note Trigger Note 64 Output 5 Configuration 05 01 00 41 Note Trigger Note 65 Output 6 Configuration 06 01 00 42 Note Trigger Note 66 Output 7 Configuration 07 01 00 43 Note Trigger Note 67 Output 8 Configuration 08 01 00 44 Note Trigger Note 68 Output 9 Configuration 09 01 00 45 Note Trigger Note 69 Output 10 Configuration OA 01 00 46 Note Trigger Note 70 Output 11 Configuration 0B 01 00 47 Note Trigger Note 71 Output 12 Configuration 0C 01 00 48 Note Trigger Note 72 Output 13 Configuration 0D 01 00 49 Note Trigger Note 73 Output 14 Configuration OE 01 00 4A Note Trigger Note 74 Output 15 Configuration OF 01 00 4B Note Trigger Note 75 Output 16 Configuration2. against its mechanical stop If maximum arm travel is desired use trial and error to find the appropriate PWM configuration Page 14 17 Highly Liquid MD24 Firmware Version 1 2 Figure 3 1 RC Servo Arm Travel amp PWM Signal Servo Arm 1 0ms 1 5ms 2 0ms Range of Motion k 6 kK Figure 3 2 PWM Configuration SysEx Message Format Hex Header PWM Configuration Footer 7 bytes repeat as desired 1 byte FO 00 01 5D 03 02 00 nn ww SS pp F7 Figure 3 3 Default Equivalent PWM Configuration SysEx Message Section Bytes Hex Meaning Header FO 00 01 5D 03 02 00 Fixed Data Minimum Pulse Width 1 02ms Output nn Configuration OF 1D 3F Pulse Width Step 7 5us for nn 00 17 hex al Maximum Pulse Width 1 98ms Initial Position 63 Footer F7 Fixed Data 2010 Sonarcana LLC Page 15 17 Highly Liquid MD24 Firmware Version 1 2 Figure 3 4 Servo Arm Travel RC Servo ww 0Fh ss 1Dh T Servo Arm Position by MIDI Control Parameter Value MIDI Control MIDI Control MIDI Control Parameter 0 Parameter 63 Parameter 127 Figure 3 5 Servo Arm Travel RC Servo ww 0Fh ss 0Eh MIDI Control MIDI Control MIDI Control 0 gz Parameter 0 Parameter 63 Parameter 127 Servo Arm Position by 1 02ms 1 26ms 1 50ms MIDI Control Parameter Value ke ee Ke Figure 3 6 Servo Arm Travel RC Servo ww 17h ss OEh 0 MIDI c
3. 10 01 00 4C Note Trigger Note 76 Output 17 Configuration 11 01 00 4D Note Trigger Note 77 Output 18 Configuration 12 01 00 4E Note Trigger Note 78 Output 19 Configuration 13 01 00 4F Note Trigger Note 79 Output 20 Configuration 14 01 00 50 Note Trigger Note 480 Output 21 Configuration 15 01 00 51 Note Trigger Note 81 Output 22 Configuration 16 01 00 52 Note Trigger Note 482 Output 23 Configuration 17 01 00 53 Note Trigger Note 483 Footer F7 Fixed Data 2010 Sonarcana LLC Page 9 17 Highly Liquid Figure 2 3 Servo Control via MIDI CC Message MD24 Firmware Version 1 2 Section Bytes Hex Meaning Header FO 00 01 SD 03 01 Fixed Data Pulse Length 00 Note duration determines note trigger pulse length Output 0 Configuration 0027 00 00 Servo Control CC 0 Output I Configuration 01 270001 Servo Control CC 1 Output 2 Configuration 02 27 00 02 Servo Control CC 2 Output 3 Configuration 03 27 00 03 Servo Control CC 3 Output 4 Configuration 0427 00 04 Servo Control CC 4 Output 5 Configuration 05 27 00 05 Servo Control CC 5 Output 6 Configuration 06 27 00 06 Servo Control CC 6 Output 7 Configuration 0727 00 07 Servo Control CC 7 Output 8 Configuration 08 27 00 08 Servo Control CC 8 Output 9 Configuration 09 27 00 09 Servo Control CC 9 Output 10 Configuration OA 27 00 OA Servo Control
4. Reverse MIDI Note Servo position corresponds to aftertouch value channel number Controller Forward MIDI Controller 27 Servo ov Se Servo position corresponds to controller position channel number Controller Reverse MIDI Controller 28 Servo ae 2 Servo position corresponds to controller position channel number 29 Servo Program Change Forward MIDI Ignored Servo position corresponds to the current program number channel 2A Servo Program Change Reverse MIDI Ignored Servo position corresponds to the current program number channel Channel Pressure Forward MIDI 2B Servo Fa Ignored Servo position corresponds to channel pressure value channel Channel Pressure Reverse MIDI 2C Servo a Ignored Servo position corresponds to channel pressure value channel 2D Servo Pitch Wheel Forward MIDI ined Servo position corresponds to pitch wheel position channel 8 2E Servo Pitch Wheel Reverse MIDI del Servo position corresponds to pitch wheel position channel g 2010 Sonarcana LLC Page 7 17 Highly Liquid MD24 Firmware Version 1 2 Table 2 3 MIDI Channel ch Hex Channel Setting 00 Channel as specified by DIP switch SW1 01 Channel 1 02 Channel 2 03 Channel 3 04 Channel 4 05 Channel 5 06 Channel 6 07 Channel 7 08 Channel 8 09 Channel 9 OA Channel 10 0B Channel 11 OC Channel 12 0D Channel 13 OE Channel 14 OF Channel 15 10 Channel 16
5. 00 45 Note Trigger Note 69 Output 19 Configuration 13 23 00 45 Servo Note Velocity N ote 69 Output 20 Configuration 14 01 00 46 Note Trigger Note 70 Output 21 Configuration 15 23 00 46 Servo Note Velocity N ote 70 Output 22 Configuration 16 01 00 47 Note Trigger Note 71 Output 23 Configuration 17 23 00 47 Servo Note Velocity N ote 71 Footer F7 Fixed Data 2010 Sonarcana LLC Page 12 17 Highly Liquid 3 0 PWM Configuration 3 1 Overview A servo is controlled by a pulse width modulation PWM signal a continuously repeating 5V pulse The frequency of pulses is called the refresh rate At any point in time servo arm position is set by the width of the most recent pulse changes to pulse width cause motion of the servo arm Different servo models require different ranges of pulse width Consult your servo documentation for the characteristics of the required control signal Typical radio control RC servos accept pulse widths between lms and 2ms for approximately 90 of arm travel Figure 3 1 MD24 servo mode outputs using the default PWM configuration will generate pulses in this range The PWM signal generated by an MD24 servo mode output can be adjusted via the PWM Configuration SysEx Message Each output can be adjusted independently to alter the range of arm travel for a conn
6. determine the duration of the output pulse When pp gt 00h the output pulse will have a fixed length independent of the note s duration The length of the pulse is determined by the formula pp 1 x 4ms lt pulse length lt pp x 4ms The valid range for pp is 00h to 7Fh 2010 Sonarcana LLC MD24 Firmware Version 1 2 2 2 2 Output Number nn Parameter nn specifies which MD24 output is configured by the three bytes that follow it The valid range is 00 to 17 hex corresponding to MD24 outputs 0 to 23 2 2 3 Output Mode mm Parameter mm specifies the output mode for the output specified by nn Valid range is 00 to 2E hex The meanings of ch and ss depend on the value of mm Table 2 2 lists each output mode and the associated meanings of ch and ss Each output mode is categorized as a logic mode or servo mode The characteristics of servo mode outputs can be adjusted via the PWM_ Configuration SysEx Message Servo modes are available in both Forward and Reverse The direction refers to the travel clockwise counter clockwise of the servo arm in response to a change in the MIDI control parameter Arm travel for some servo models is the opposite of travel for other models Use trial and error to determine whether forward or reverse is the correct choice for your application 2 2 4 MIDI Channel ch Some output modes respond to channel specific MIDI messages see Table 2 2 Out
7. minimum pulse width ww 1 x 64us The valid range for ww is 00 to 3F hex 3 2 3 Pulse Width Step ss Parameter ss specifies the change in pulse width for each increment or decrement in the associated MIDI control value based on the following formula pulse width step ss 1 x 0 25us The valid range for ss is 00 to 7F hex 3 2 4 Initial Position pp Parameter pp specifies the initial position of the servo upon MD24 power up Valid range is 00 to 7F hex Page 13 17 Highly Liquid 3 2 5 Maximum Pulse Width The maximum pulse width can be calculated using the values ww and ss as follows maximum pulse width ww 1 x 6448 ss 1 x 32us 3 3 Refresh Rate The MD24 refreshes each servo mode output in series By default the MD24 will initiate refresh cycles at 20 ms intervals for a refresh rate of 50 Hz The quantity and configuration of servo mode outputs may affect the servo refresh rate At any time the actual refresh period will be the greater of 20 ms or the sum of all servo mode output pulse lengths 3 4 Default Configuration The MD24 ships with a preloaded PWM configuration which can be expressed as an equivalent SysEx configuration message See Figure 3 3 The default PWM configuration is intended to accommodate typical radio control type servos Under default settings a servo mode output will generate a signal with a pulse width varying between a
8. setting specified by DIP switch SW1 The contents of the MIDI Configuration SysEx Message determine which type of channel setting is used The MD24 ships preloaded with a default configuration The default configuration can be restored at any time via the Initialization Jumper Page 2 17 Highly Liquid 2 0 MIDI Configuration 2 1 Overview The MD24 ships with a preloaded default MIDI configuration The MIDI Configuration SysEx Message is used to alter the behavior of one or more MD24 outputs 2 2 MIDI Configuration SysEx Message Figure 2 1 shows the format of the MIDI Configuration SysEx Message The message consists of a fixed header a variable length body and a fixed footer The body of the message consists of a single pulse length variable plus one or more 4 byte blocks each specifying the configuration of a single MD24 output The configuration of outputs not specified in the message will remain unchanged The Activity LED blinks three times upon receipt of a properly formatted SysEx configuration message If no indication is given the MD24 configuration has not been changed Configuration is retained when the MD24 is disconnected from a power supply 2 2 1 Pulse Length pp The MD24 can generate output pulses in response to MIDI notes See note trigger modes 01h and 02h The value of pp determines the behavior of all outputs using these modes When pp 00h the duration of the MIDI note will
9. CC 10 Output 11 Configuration 0B 27 00 0B Servo Control CC 11 Output 12 Configuration 0C 27 00 OC Servo Control CC 12 Output 13 Configuration 0D 27 00 0D Servo Control CC 13 Output 14 Configuration OE 27 00 OE Servo Control CC 14 Output 15 Configuration OF 27 00 OF Servo Control CC 15 Output 16 Configuration 10 27 00 10 Servo Control CC 16 Output 17 Configuration 11 27 00 11 Servo Control CC 17 Output 18 Configuration 12 27 00 12 Servo Control CC 18 Output 19 Configuration 13 27 00 13 Servo Control CC 19 Output 20 Configuration 14 01 00 14 Servo Control CC 20 Output 21 Configuration 15 01 00 15 Servo Control CC 21 Output 22 Configuration 16 01 00 16 Servo Control CC 22 Output 23 Configuration 17 01 00 17 Servo Control CC 23 Footer F7 Fixed Data 2010 Sonarcana LLC Page 10 17 Highly Liquid MD24 Firmware Version 1 2 Figure 2 4 On Off by Bank Select amp Program Change Section Bytes Hex Meaning Header F0 00 01 5D 03 01 Fixed Data Pulse Length 00 Note duration determines note trigger pulse length Output 0 Configuration 00 19 00 00 Program Change Bit 0 Output 1 Configuration 01 1A 00 00 Program Change Bit 1 Output 2 Configuration 02 1B 00 00 Program Change Bit 2 Output 3 Configuration 03 1C 00 00 Program Change Bit 3 Output 4 Configuration 04 1D 00 00 Program Change Bi
10. Fes eg Fw Bag as eg ME MD24 Firmware Version 1 2 User Manual Updated 2013 04 17 Additional documentation available at http forum highlyliquid com 2010 Sonarcana LLC Page 1 17 Highly Liquid Table of Contents EE siscessesnatsancesennsienssnesecnnnamnaseceans 2 2 0 MIDI COPINE 3 21 rene samde 3 2 2 MIDI Configuration SysEx Message E 3 2 2 1 Pulse Length pp 3 2 2 2 Output Number nn 3 2 2 3 Output Mode mm 3 2 2 4 MIDI Channel ch 3 225 Selector SS insimitinass 3 2 3 DIP Switch Channel Selection 4 2 4 Default Configuration 4 25 Fl ss 4 3 0 PWM Configuration 13 JL OVErViEW nee 13 3 2 PWM Configuration SysEx Message NOE RER ERR 13 3 2 1 Output Number nn 13 3 2 2 Minimum Pulse Width ww 13 3 2 3 Pulse Width Step ss 13 3 2 4 Initial Position pp 13 3 2 5 Maximum Pulse Width 14 3 3 Refresh RAS 14 3 4 Default Configuration 14 3 5 PPs rot 14 4 0 Initialization Jumper 17 30 Indicator LED sens 17 1 0 Overview The MD24 has 24 outputs each of which can change state in response to a wide range of incoming MIDI events including note controller CC program change and start stop continue messages Each MD24 output is independently configured via MIDI System Exclusive SysEx message Instructions for using a PC to create and send SysEx messages can be found at http highlyliquid com hl2012 blog 61 2010 So
11. IDI notes beginning with Middle C Each output uses the MIDI channel specified by the DIP switch SW1 2 5 Examples Figure 2 3 shows a configuration which uses MIDI CC messages to control each MD24 output in servo mode MIDI controllers 0 to 23 are used Figure 2 4 uses 14 bits from the bank number CC 0 and 32 and 7 bits from the program number to control the state of 21 logic outputs Each bank program combination will cause a unique combination of on off output states Figure 2 5 assigns a pair of outputs to each of 12 notes The first output in each pair is a note trigger The second output in each pair is a servo mode output which sets the servo arm position in response to the velocity of the corresponding note Page 4 17 Highly Liquid MD24 Firmware Version 1 2 Figure 2 1 MIDI Configuration SysEx Message Format Hex Header Pulse Length MIDI Configuration Footer 6 bytes 1 byte repeat as desired 1 byte F0 00 01 5D 03 01 pp nn mm ch SS F7 Table 2 2 Output Modes mm ted Hex Type Mode Description ch ss Disabled 00 N A Output is off Ignored Ignored Note Trigger MIDI Note 01 Logic Output is on for the duration of a corresponding MIDI note and off el number otherwise A fixed length pulse can be specified using parameter pp hex Inverted Note Trigger MIDI Note 02 Logic Output is off f
12. ected servo or to accommodate servos with differing PWM control requirements 3 2 PWM Configuration SysEx Message Figure 3 2 shows the format of the PWM Configuration SysEx Message The message consists of a fixed header a variable length body and a fixed footer The body of the message consists of one or more 4 byte blocks each specifying the PWM configuration of a specific MD24 output The configuration of outputs not specified in the message will remain unchanged Outputs which are configured in logic modes are unaffected by the settings from the PWM Configuration SysEx Message 2010 Sonarcana LLC MD24 Firmware Version 1 2 The Activity LED blinks three times upon receipt of a properly formatted SysEx configuration message If no indication is given the MD24 configuration has not been changed Configuration is retained when the MD24 is disconnected from a power supply The direction clockwise counter clockwise of servo arm travel in response to a given change in control parameter value is determined by the output mode as specified in the MIDI Configuration SysEx Message 3 2 1 Output Number nn Parameter nn specifies which MD24 output is configured by the three bytes that follow it The valid range is 00 to 17 hex corresponding to MD24 outputs 0 to 23 3 2 2 Minimum Pulse Width ww Parameter ww specifies the minimum pulse width of the PWM servo control signal based on the following formula
13. el significant bit hex __ Controller Bit 1 VIDE JOE 13 Logic be number Output state corresponds to bit 1 of the controller CC position channel hex 14 Logio Controller Bit 2 MIDE JET 8 Output state corresponds to bit 2 of the controller CC position channel hex 15 Logio Controller Bit 3 MIDI ua 8 Output state corresponds to bit 3 of the controller CC position channel hex 16 Logio Controller Bit 4 MIDI Conyoller 8 Output state corresponds to bit 4 of the controller CC position channel hex 17 Logio Controller Bit 5 MIDI ua 8 Output state corresponds to bit 5 of the controller CC position channel hex Controller Bit 6 MIDI Controller 18 Logic Output state corresponds to bit 6 of the controller CC position Bit 6 is the hannel number most significant bit hex Program Change Bit 0 MIDI 19 Logic Output state corresponds to bit 0 of the current program number Bit 0 is the Ignored ae channel least significant bit Program Change Bit 1 MIDI LA Logic Output state corresponds to bit 1 of the current program number channel T nored Program Change Bit 2 MIDI 18 oe Output state corresponds to bit 2 of the current program number channel Ignored Program Change Bit 3 MIDI TG Logic Output state corresponds to bit 3 of the current program number channel ignored 2010 Sonarcana LLC Page 6 17 Highly Liquid MD24 F
14. esponds to bit 0 of the note velocity of the most recent Note On Ignored Ar hes channel message Bit 0 is the least significant bit Note Velocity Bit 1 MIDI OC Logic Output state corresponds to bit 1 of the note velocity of the most recent Note On channel Ignored message 2010 Sonarcana LLC Page 5 17 Highly Liquid MD24 Firmware Version 1 2 Table 2 2 Output Modes Continued Hex aise Mode Description ch ss Note Velocity Bit 2 MIDI OD Logic Output state corresponds to bit 2 of the note velocity of the most recent Note On Manne Ignored message Note Velocity Bit 3 MIDI OE Logic Output state corresponds to bit 3 of the note velocity of the most recent Note On hannel Ignored message Note Velocity Bit 4 MIDI OF Logic Output state corresponds to bit 4 of the note velocity of the most recent Note On hannel Ignored message Note Velocity Bit 5 MIDI 10 Logic Output state corresponds to bit 5 of the note velocity of the most recent Note On hannel Ignored message Note Velocity Bit 6 MIDI 11 Logic Output state corresponds to bit 6 of the note velocity of the most recent Note On Ignored ei RR channel message Bit 6 is the most significant bit Controller Bit 0 MIDI Controller 12 Logic Output state corresponds to bit 0 of the controller CC position Bit 0 is the least number os chann
15. irmware Version 1 2 Table 2 2 Output Modes Continued mm Mode Tos Hex Type Mode Description ch ss Program Change Bit 4 MIDI 1D Logig Output state corresponds to bit 4 of the current program number channel ignored Program Change Bit 5 MIDI 1E MORE Output state corresponds to bit 5 of the current program number channel Ignored Program Change Bit 6 MIDI IF Logic Output state corresponds to bit 6 of the current program number Bit 6 is the hannel Ignored most significant bit Sync Run 20 Logic MIDI Start and Continue messages latch output on MIDI Stop message Ignored Ignored latches output off Note Number Forward MIDI 21 Servo Servo position corresponds to the note number from the most recent Note On Mand Ignored message Note Number Reverse MIDI 22 Servo Servo position corresponds to the note number from the most recent Note On channel Ignored message Note Velocity Forward MIDI Note 23 Servo Servo position corresponds to the note velocity from the most recent Note On channel number message Note Velocity Reverse MIDI Note 24 Servo Servo position corresponds to the note velocity from the most recent Note On channel number message 25 Servo Aftertouch Forward MIDI Note Servo position corresponds to aftertouch value channel number 26 Servo Aftertouch
16. ity Servo Section Bytes Hex Meaning Header FO 00 01 5D 03 01 Fixed Data Pulse Length 00 Note duration determines note trigger pulse length Output 0 Configuration 0001 003C Note Trigger Note 60 Middle C Output 1 Configuration 0123 00 3C Servo Note Velocity Note 60 Output 2 Configuration 02 01 00 3D Note Trigger Note 61 Output 3 Configuration 03 23 00 3D Servo Note Velocity Note 61 Output 4 Configuration 04 01 00 3E Note Trigger Note 62 Output 5 Configuration 05 23 00 3E Servo Note Velocity Note 62 Output 6 Configuration 06 01 00 3F Note Trigger Note 63 Output 7 Configuration 07 23 00 3F Servo Note Velocity Note 63 Output 8 Configuration 08 01 00 40 Note Trigger Note 64 Output 9 Configuration 09 23 00 40 Servo Note Velocity Note 64 Output 10 Configuration 0A 01 00 41 Note Trigger Note 65 Output 11 Configuration OB 23 00 41 Servo Note Velocity N ote 65 Output 12 Configuration OC 01 00 42 Note Trigger Note 66 Output 13 Configuration OD 23 00 42 Servo Note Velocity N ote 66 Output 14 Configuration OE 01 00 43 Note Trigger Note 67 Output 15 Configuration OF 23 00 43 Servo Note Velocity N ote 67 Output 16 Configuration 10 01 00 44 Note Trigger Note 68 Output 17 Configuration 11 23 00 44 Servo Note Velocity N ote 68 Output 18 Configuration 12 01
17. narcana LLC MD24 Firmware Version 1 2 The MIDI Configuration SysEx Message specifies the output mode for one or more MD24 outputs There are several possible output modes each of which is categorized as either a logic mode or a servo mode A logic mode output can change between one of two logic states on 5V or off OV The mapping of MIDI event to logic state depends on the specific output mode and other settings in the MIDI Configuration SysEx Message A servo mode output generates a servo control signal The arm of a servo connected to an MD24 servo mode output will change position in response to MIDI events The MD24 divides the range of servo arm travel into 128 equally spaced positions corresponding to the 128 possible values of a MIDI control parameter as shown in Figure 3 4 The output s mode and other settings in the MIDI Configuration SysEx Message determine which MIDI parameter controls the output The characteristics of the signal generated by a servo mode output can be adjusted via the PWM Configuration SysEx Message The message can be used to alter the range of motion of a connected servo It also allows the MD24 to control servos of differing control signal specifications Logic mode outputs are unaffected by settings in the PWM Configuration SysEx Message Some MD24 output modes are MIDI channel specific Each MD24 output uses either an independent channel setting or the global channel
18. or the duration of a corresponding MIDI note and on channel number otherwise A fixed length pulse can be specified using parameter pp hex Note Toggle MIDI Note 03 Logic Output state is toggled amp latched upon receipt of a matching Note On message number oh Br hee channel Initial output state is off hex Note Number Bit 0 MIDI 04 Logic Output state corresponds to bit 0 of the note number of the most recent Note On Ignored RPG PE channel message Bit 0 is the least significant bit Note Number Bit 1 MIDI 05 Logic Output state corresponds to bit 1 of the note number of the most recent Note On el Ignored message Note Number Bit 2 MIDI 06 Logic Output state corresponds to bit 2 of the note number of the most recent Note On el Ignored message Note Number Bit 3 MIDI 07 Logic Output state corresponds to bit 3 of the note number of the most recent Note On chamnel Ignored message Note Number Bit 4 MIDI 08 Logic Output state corresponds to bit 4 of the note number of the most recent Note On channel Ignored message Note Number Bit 5 MIDI 09 Logic Output state corresponds to bit 5 of the note number of the most recent Note On channel Ignored message Note Number Bit 6 MIDI OA Logic Output state corresponds to bit 6 of the note number of the most recent Note On Ignored a ee A channel message Bit 6 is the most significant bit Note Velocity Bit 0 MIDI OB Logic Output state corr
19. orer MIDI Control MIDI Control 127 Parameter Parameter 63 Parameter 127 tar Servo Arm Position by 1 77ms 2 01ms MIDI Control Parameter Value a p k k HOUR ste STENE O 2010 Sonarcana LLC Page 16 17 Highly Liquid 4 0 Initialization Jumper At any time the default MIDI configuration and default PWM configuration can be simultaneously restored by connecting the two terminals of the INIT jumper JP1 and simultaneously powering up the MD24 Upon use of the INIT Jumper the Activity LED will blink 6 times and any user specified configuration will be lost 5 0 Indicator LEDs The MD24 has two indicator LEDs PWR Power and ACT Activity The Power LED indicates the presence of a connected power supply If the Power LED switches off or dims during operation an inadequate power supply or overloading of MD24 outputs is indicated The Activity LED blinks briefly when the MD24 processes any MIDI event that affects the state of any output MIDI events which do not match the configured output modes will not cause an activity indication When any properly formatted SysEx configuration message is received the Activity LED will blink three times Use of the INIT Jumper will cause the Activity LED to blink six times The Activity LED performs a brief self test upon power up 2010 Sonarcana LLC MD24 Firmware Version 1 2 Page 17 17
20. pproximately Ims and 2ms This will cause a 90 range of motion of the servo arm Some servo models may require adjustment of the PWM configuration Note that the default PWM settings are unused unless an output is configured in servo mode by a MIDI Configuration SysEx Message 3 5 Examples Figure 3 4 shows servo arm position as a function of MIDI control parameter value assuming that the servo is a typical RC servo and that the MD24 output uses the default PWM configuration 2010 Sonarcana LLC MD24 Firmware Version 1 2 Figure 3 5 shows the altered range of servo arm travel given that the step width is reduced by half Note that the range of arm travel has also been reduced by half from 90 to 45 The servo responds to the full range 0 127 of the MIDI control parameter but each increment in the value causes a smaller movement Figure 3 6 shows the effect of changes to ww Because the value for ss is the same as that in figure Figure 3 5 the servo arm covers a range of 45 But because the minimum pulse width has been increased by approximately 0 5ms the range of travel is shifted by 45 Choice of values for ww and ss will depend both on the characteristics of the connected servo and on the desired range of servo arm travel Most servos are mechanically limited to a 180 range of arm travel If the control signal specifies a position outside the mechanical range of the servo arm the servo may strain
21. puts thus configured can respond to the channel specified by DIP switch SWI a specific channel independent of other outputs or to all channels Omni See Table 2 3 2 2 5 Selector ss The meaning of ss depends on the value of the corresponding mm See Table 2 2 Page 3 17 Highly Liquid 2 3 DIP Switch Channel Selection Each MD24 output can use either an independent MIDI channel setting or the global channel setting specified by DIP switch SWI The contents of the MIDI Configuration SysEx Message determine which outputs if any use the DIP switch channel setting Note Changes to the DIP switch setting take effect only at power up Table 2 1 shows the SW1 settings for each channel Table 2 1 MIDI Channel Selection MIDI SWI Setting Channel 1 2 3 4 1 off off off off 2 off off off on 3 off off on off 4 off off on on 5 off on off off 6 off on off on 7 off on on off 8 off on on on 9 on off off off 10 on off off on 11 on off on off 12 on off on on 13 on on off off 14 on on off on 15 on on on off 16 on on on on 2010 Sonarcana LLC MD24 Firmware Version 1 2 2 4 Default Configuration The MD24 ships with a preloaded default MIDI configuration which can be expressed as an equivalent SysEx configuration message See Figure 2 2 In the default configuration MD24 outputs use note trigger mode for a block of M
22. t 4 Output 5 Configuration 05 1E 00 00 Program Change Bit 5 Output 6 Configuration 06 1F 00 00 Program Change Bit 6 Output 7 Configuration 07 12 00 20 Controller 32 Bank Select L Bit 0 Output 8 Configuration 08 13 00 20 Controller 32 Bank Select L Bit 1 Output 9 Configuration 09 14 00 20 Controller 32 Bank Select L Bit 2 Output 10 Configuration OA 15 00 20 Controller 32 Bank Select L Bit 3 Output 11 Configuration 0B 16 00 20 Controller 32 Bank Select L Bit 4 Output 12 Configuration 0C 17 00 20 Controller 32 Bank Select L Bit 5 Output 13 Configuration 0D 18 00 20 Controller 32 Bank Select L Bit 6 Output 14 Configuration OE 12 00 00 Controller 0 Bank Select H Bit 0 Output 15 Configuration OF 13 00 00 Controller 0 Bank Select H Bit 1 Output 16 Configuration 10 14 00 00 Controller 0 Bank Select H Bit 2 Output 17 Configuration 11 15 00 00 Controller 0 Bank Select H Bit 3 Output 18 Configuration 12 16 00 00 Controller 0 Bank Select H Bit 4 Output 19 Configuration 13 17 00 00 Controller 0 Bank Select H Bit 5 Output 20 Configuration 14 18 00 00 Controller 0 Bank Select H Bit 6 Output 21 Configuration 15 00 00 00 Disabled Output 22 Configuration 16 00 00 00 Disabled Output 23 Configuration 17 00 00 00 Disabled Footer F7 Fixed Data 2010 Sonarcana LLC Page 11 17 Highly Liquid MD24 Firmware Version 1 2 Figure 2 5 Note Trigger Logic amp Note Veloc
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