Dual CANbus monitor and instrumentation cluster

Eagle Schematic and Board design

/media/uploads/TickTock/canaryr5.zip

/media/uploads/TickTock/sch_r4.jpg /media/uploads/TickTock/lcdsch.jpg /media/uploads/TickTock/brd_r4.jpg

Parts List

qtyinstancepart #packagesupplierDescription
1BAT3Vhttp://www.ebay.com/itm/10x-CR2032-SMD-Battery-Holder-for-CR2032-Battery-/180938057979?pt=LH_DefaultDomain_0&hash=item2a20bfa8fbLithium 2032 coin battery holder
4C1-C4ECST1DC106R6032Tantalium capacitor 10uF
3FC1-FC3ZF1-20-01-T-WThttp://www.samtec.com/cable-systems/idc-ffc/ffc/zero-insertion.aspx20 conductor 1mm pitch flex cable connector (optional)
1FJ-20-R-08.00-4http://www.samtec.com/cable-systems/idc-ffc/ffc/zero-insertion.aspx8\" 20 conductor 1mm pitch flex connector, end reversed (optional)
2H1-H4(DON'T populate H1-H4 headers - solder mbed directly)
1H5http://www.ebay.com/itm/221186042943?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l26491x12 .1\" pitch header (optional)
1H62x6 .1\" pitch header (optional)
2IC1,IC2VP230LMDSOP8http://www.ebay.com/itm/130488665247?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649canbus transciever
1IC3LM1117-5VSOT2235V regulator
5JP*2 pin .1\" jumper header
1mbedLPC1768http://www.ebay.com/itm/200830573509?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649mbed uC
2Q1,Q22N2222SOT23General purpose NPN transistor
1R1R392M12063.9K resistor
4R2,R4-R6R102M12061K resistor
1R3R500M120650 Ohm resistor
2TR1-TR5ZJYS81R5-2PL51TG01http://www.digikey.com/product-detail/en/ZJYS81R5-2PL51T-G01/445-2223-1-ND/765232CM Choke
1Z11N5340BGC1702-15http://www.ebay.com/itm/150878122425?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l26496V, 5W Zener Diode
1X1USBhttp://www.ebay.com/itm/New-Vertical-USB-2-0-A-pcb-connector-socket-USB-A-Type-/300553895292?pt=LH_DefaultDomain_0&hash=item45fa687d7cvertical USB connector
2LCD0,LCD1TFThttp://www.mikroe.com/add-on-boards/display/tft-proto/320x240 LCD with touch screen

Assembly

1) LCD Displays

I found ribbon cable is a nice way to organize the wires to the displays. You'll need 12 conductors and I connected them in the following order:

1LED+
2LED-
3RSTB
4MOSI
5SCLK
6CSB
7X+
8X-
9Y+
10Y-
11VDD
12GND

First I connected all the GND connections (IM0, IM1, IM3, & 2 GND). Do not connect the bottom GND until you have the ribbon cable connected. After making all the ribbon cable connections (connecting the GND of the ribbon cable to the bottom GND pad), solder the GND bar from the previous step to the back of the bottom GND connection. Finally, make a connection from the back side 3.3V pin to IM2. Take a break and repeat for the second display. /media/uploads/TickTock/lcdtop.jpg /media/uploads/TickTock/lcdbot.jpg Once the two displays are complete combine all wires except CS0, CS1, X+, X-, Y+, and Y-. Connect X- of the left display to X+ of the right. Similarly connect Y- of the left display to Y+ of the right. Insulate any exposed wires.

2) PCB

Refer to the schematics to place all the components on the board. If you plan to install into the CANary 3D enclosure, DO NOT install the battery holder or the socket for the mbed and, instead, connect two wires to the VB and GND pads nearby. You will have to install the battery holder against the back wall to avoid interfering with the right-hand display and the mbed will have to be directly soldered. I have not found a socket with a low enough profile to fit in the space provided (depth of enclosure is limited by the space behind the center console). Also, I recommend keeping as much lead as possible on the Zener diode (bending it as shown to clear the back wall). Although it is operating well within parameters, the Zener gets quite hot during extended operation and the leads help dissipate the heat and keep it away from the PCB and other components.

/media/uploads/TickTock/pcbtop.jpg /media/uploads/TickTock/pcbbot.jpg

Once the PCB is populated, solder the LCDs to the PCB. CS0 connects to the right display and CS1 connects to the left. /media/uploads/TickTock/brddis.jpg

3) Testing

1)First step is to buzz out all connections from the LCDs to the pins in the main board
2)Next check the touch screen connections. On the main board, place an Ohm meter across X+ and X-. You should read 700 Ohms. Repeat for Y+ and Y-. Then test the resistance from X+ to Y+. With nothing touching the screens, it should read >100K Ohms and <1K when touching either screen.
3)When all connections are checked, solder in the mbed. Download and install the touch2 program http://mbed.org/users/TickTock/code/touch2/ to test the basic operation of the mbed and touch screens.
tips:
Touch screen is sensitive - excess flux on X+,X-,Y+,Y- connection on mbed can result in flakey operation
If touch is not working, double-check the LCD0_CS and LCD1_CS are not swapped. LCD0_CS must connect to the CS of the LCD that has X- & Y- connected to the mbed. LCD1_CS must connect to the CS of the LCD that has X+ & Y+ connected to the mbed.
4)Once touch2 works, it is time to connect to the OBD connector. I highly recommend double checking all connections from the OBD to the PCB with the cable in place before connecting to the Leaf. Buzz out all the pins in the OBS to make sure none are shorting to each other, Check that the 12V goes to the Zener (and nothing else) and the switched 12V to the resistor divider (and nothing else). Test the ground connection properly connects to ground and nothing else.
5)Once you are confident there are no shorts or wrong connections from the OBD connector, take a deep breath and plug it into your leaf. Touch2 program should come up and function. Unplug and install the latest CANary firmware. Test all features before installing into the enclosure (gids, cellpair, menu system, logging) since installing and removing from the enclosure is a PITA.

/media/uploads/TickTock/pcbdone.jpg /media/uploads/TickTock/functioning.jpg

4) Enclosure

The 3D printer leaves a lot of powder behind - I used a strong spray of water to get it out of all the cracks. The enclosure comes with a rather rough finish. I recommend convincing yourself you like it, then simply lightly sand then paint before assembly. Sanding is very difficult - the nylon is very nicely fused and doesn't want to sand. I tried sandblasting and that didn't work either. I had some limited success with filler and then sanding, but only on the outside - it is too difficult to sand the face.

5) Final Assembly

Committer:
TickTock
Date:
Wed Apr 17 11:48:10 2013 +0000
Revision:
83:52b1f330a62d
Parent:
80:cf009a64eedd
Child:
87:46ac3f2519d6
Fixed DTE drawing bug where grid drew over graph

Who changed what in which revision?

UserRevisionLine numberNew contents of line
TickTock 13:62e0f7f39ff5 1 // utility.h
TickTock 13:62e0f7f39ff5 2
TickTock 12:8e42d7ba8468 3 #include "CAN.h"
TickTock 13:62e0f7f39ff5 4 #include "common.h"
TickTock 23:cd03f9c3395e 5 #include "TOUCH_TFTx2.h"
TickTock 76:fb6779d0963e 6 #include "beep.h"
TickTock 12:8e42d7ba8468 7
TickTock 13:62e0f7f39ff5 8 extern Timer timer;
TickTock 83:52b1f330a62d 9 extern Ticker msgReq;
TickTock 75:77bd26829dca 10 extern volatile unsigned short secsNoMsg;
TickTock 75:77bd26829dca 11 extern volatile unsigned short secsNoTouch;
TickTock 13:62e0f7f39ff5 12 extern volatile bool canIdle;
TickTock 13:62e0f7f39ff5 13 extern volatile bool userIdle;
TickTock 13:62e0f7f39ff5 14 extern char displayLog[20][40];
TickTock 13:62e0f7f39ff5 15 extern unsigned char displayLoc;
TickTock 13:62e0f7f39ff5 16 extern bool touched;
TickTock 13:62e0f7f39ff5 17 extern bool logOpen;
TickTock 39:eef8beac7411 18 extern bool logCP; // Turbo3
TickTock 48:d1ce92104a1f 19 extern bool yesBattLog ; // gg - Batt Log
TickTock 40:0e6e71a7323f 20 extern bool showCP;
TickTock 13:62e0f7f39ff5 21 extern char writeBuffer[maxBufLen][13];
TickTock 13:62e0f7f39ff5 22 extern volatile int writePointer;
TickTock 76:fb6779d0963e 23 extern int readPointer;
TickTock 13:62e0f7f39ff5 24 extern DigitalOut led1,led2,led3,led4;
TickTock 13:62e0f7f39ff5 25 extern char indexLastMsg[0x800];
TickTock 13:62e0f7f39ff5 26 extern unsigned char dMode[2];
TickTock 13:62e0f7f39ff5 27 extern unsigned char msgChanged[100];
TickTock 13:62e0f7f39ff5 28 extern unsigned char battData[256];
TickTock 13:62e0f7f39ff5 29 extern CANMessage lastMsg[100];
TickTock 13:62e0f7f39ff5 30 extern CAN can1,can2;
TickTock 13:62e0f7f39ff5 31 extern DigitalOut can1SleepMode,can2SleepMode;
TickTock 78:a383971fe02f 32 //extern bool pollCP;
TickTock 34:4751a8259b18 33 extern bool tick;
garygid 69:6bfdfc002036 34 extern bool ZeroSecTick;
TickTock 34:4751a8259b18 35 extern bool headlights;
TickTock 23:cd03f9c3395e 36 extern TOUCH_TFTx2 tt;
TickTock 35:5acbd8a64a89 37 extern float ledHi;
TickTock 35:5acbd8a64a89 38 extern float ledLo;
TickTock 35:5acbd8a64a89 39 extern unsigned short pollInt;
TickTock 35:5acbd8a64a89 40 extern float scale12V;
TickTock 36:dbd39c315258 41 extern bool playbackEn;
TickTock 36:dbd39c315258 42 extern bool playbackOpen;
TickTock 36:dbd39c315258 43 extern bool step;
TickTock 36:dbd39c315258 44 extern float playbackInt;
TickTock 40:0e6e71a7323f 45 extern signed long mWs_x4;
TickTock 40:0e6e71a7323f 46 extern unsigned short numWsamples;
TickTock 41:8d4609ea7259 47 extern signed long motorRPM;
TickTock 41:8d4609ea7259 48 extern unsigned short numSsamples;
TickTock 48:d1ce92104a1f 49 extern unsigned char skin;
TickTock 50:83d5864c64a0 50 extern unsigned char dtePeriod;
TickTock 76:fb6779d0963e 51 extern Beep spkr;
TickTock 78:a383971fe02f 52 extern unsigned char reqMsgCnt;
TickTock 12:8e42d7ba8468 53
TickTock 12:8e42d7ba8468 54 extern "C" {
TickTock 12:8e42d7ba8468 55 void mbed_reset();
TickTock 13:62e0f7f39ff5 56 void RTC_IRQHandler();
TickTock 13:62e0f7f39ff5 57 void RTC_Init (void);
TickTock 13:62e0f7f39ff5 58 void logMsg (char *msg);
TickTock 13:62e0f7f39ff5 59 void touch_ISR();
TickTock 13:62e0f7f39ff5 60 unsigned short getTimeStamp();
TickTock 13:62e0f7f39ff5 61 void logCan (char mType, CANMessage canRXmsg);
TickTock 13:62e0f7f39ff5 62 void logTS ();
TickTock 83:52b1f330a62d 63 void logErrMsg (char * errMsg); // gg - messeges
TickTock 78:a383971fe02f 64 //void sendCPreq();
TickTock 78:a383971fe02f 65 //void sendTreq();
TickTock 78:a383971fe02f 66 void sendReq();
TickTock 36:dbd39c315258 67 void autoPollISR();
TickTock 36:dbd39c315258 68 void playbackISR();
TickTock 13:62e0f7f39ff5 69 void recieve1();
TickTock 13:62e0f7f39ff5 70 void recieve2();
TickTock 36:dbd39c315258 71 void doNothing();
TickTock 22:a43df3905863 72 unsigned char buttonX(unsigned short X, unsigned char columns);
TickTock 22:a43df3905863 73 unsigned char buttonY(unsigned short Y,unsigned char rows);
TickTock 23:cd03f9c3395e 74 void saveConfig();
TickTock 25:ddf0ec209f03 75 void readConfig();
TickTock 25:ddf0ec209f03 76 void upDate(unsigned char field, bool updownbar);
TickTock 39:eef8beac7411 77 void logPackVoltages(); // Turbo3
TickTock 25:ddf0ec209f03 78 }
TickTock 12:8e42d7ba8468 79
TickTock 12:8e42d7ba8468 80 //LEAF OBD
TickTock 12:8e42d7ba8468 81 //1:
TickTock 12:8e42d7ba8468 82 //2:
TickTock 12:8e42d7ba8468 83 //3: AVCAN-L White/Blue
TickTock 12:8e42d7ba8468 84 //4: VSS-Shield
TickTock 12:8e42d7ba8468 85 //5: VSS Brown,White/Brown
TickTock 12:8e42d7ba8468 86 //6: CARCAN-H Green
TickTock 12:8e42d7ba8468 87 //7:
TickTock 12:8e42d7ba8468 88 //8: 12V-SW Orange,White/Orange
TickTock 12:8e42d7ba8468 89 //9:
TickTock 12:8e42d7ba8468 90 //10:
TickTock 12:8e42d7ba8468 91 //11: AVCAN-H Blue
TickTock 12:8e42d7ba8468 92 //12: EVCAN-L White/Grey
TickTock 12:8e42d7ba8468 93 //13: EVCAN-H Grey
TickTock 12:8e42d7ba8468 94 //14: CARCAN-L White/Green
TickTock 12:8e42d7ba8468 95 //15:
TickTock 12:8e42d7ba8468 96 //16: 12V-AON Red/Blue,Blue/Red
TickTock 12:8e42d7ba8468 97
TickTock 12:8e42d7ba8468 98 //VP230
TickTock 12:8e42d7ba8468 99 //1:D
TickTock 12:8e42d7ba8468 100 //2:GND
TickTock 12:8e42d7ba8468 101 //3:VCC
TickTock 12:8e42d7ba8468 102 //4:R
TickTock 12:8e42d7ba8468 103 //5:Vref
TickTock 12:8e42d7ba8468 104 //6:CANL
TickTock 12:8e42d7ba8468 105 //7:CANH
TickTock 12:8e42d7ba8468 106 //8:RS
TickTock 12:8e42d7ba8468 107
TickTock 12:8e42d7ba8468 108 //LPC1768
TickTock 12:8e42d7ba8468 109 //1: VSS
TickTock 12:8e42d7ba8468 110 //2: NC:VIN (4.5-9V supply)
TickTock 12:8e42d7ba8468 111 //3: NC:VB
TickTock 12:8e42d7ba8468 112 //4: NC:nR
TickTock 22:a43df3905863 113 //5: SPI:Reset
TickTock 22:a43df3905863 114 //6: SPI:CS0
TickTock 22:a43df3905863 115 //7: SPI:CS1
TickTock 12:8e42d7ba8468 116 //8: CAN1:Sleep --> 8:CAN1:RS
TickTock 12:8e42d7ba8468 117 //9: CAN1:RX --> 4:CAN1:R
TickTock 12:8e42d7ba8468 118 //10: CAN1:TX --> 1:CAN1:D
TickTock 12:8e42d7ba8468 119 //11: SPI:MOSI
TickTock 12:8e42d7ba8468 120 //12: SPI:MISO
TickTock 12:8e42d7ba8468 121 //13: SPI:SCLK
TickTock 12:8e42d7ba8468 122 //14: NC:Ain
TickTock 12:8e42d7ba8468 123 //15: MON12V --> 4K to 12V, 1K to VSS (To be implemented)
TickTock 12:8e42d7ba8468 124 //16: TOUCH_X+
TickTock 12:8e42d7ba8468 125 //17: TOUCH_X-
TickTock 12:8e42d7ba8468 126 //18: NC:Aout
TickTock 12:8e42d7ba8468 127 //19: TOUCH_Y+
TickTock 12:8e42d7ba8468 128 //20: TOUCH_Y-
TickTock 12:8e42d7ba8468 129 //21: Spkr+
TickTock 22:a43df3905863 130 //22: NC:pwm
TickTock 22:a43df3905863 131 //23: LED
TickTock 22:a43df3905863 132 //24: NC:pwm
TickTock 12:8e42d7ba8468 133 //25: NC:pwm
TickTock 12:8e42d7ba8468 134 //26: NC:pwm
TickTock 12:8e42d7ba8468 135 //27: NC
TickTock 12:8e42d7ba8468 136 //28: CAN2:Sleep --> 8:CAN2:RS
TickTock 12:8e42d7ba8468 137 //29: CAN2:TX --> 1:CAN2:D
TickTock 12:8e42d7ba8468 138 //30: CAN2:RX --> 4:CAN2:R
TickTock 12:8e42d7ba8468 139 //31: USB_D+
TickTock 12:8e42d7ba8468 140 //32: USB_D-
TickTock 12:8e42d7ba8468 141 //33: NC:Eth_TD+
TickTock 12:8e42d7ba8468 142 //34: NC:Eth_TD-
TickTock 12:8e42d7ba8468 143 //35: NC:Eth_RD+
TickTock 12:8e42d7ba8468 144 //36: NC:Eth_RD-
TickTock 12:8e42d7ba8468 145 //37: NC:IF+
TickTock 12:8e42d7ba8468 146 //38: NC:IF-
TickTock 12:8e42d7ba8468 147 //39: NC:5Vout (only available when connected as USB device)
TickTock 12:8e42d7ba8468 148 //40: VCC3.3