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LAOS Mainboard v03 » History » Version 6

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Anonymous, 2012-07-12 21:31


LAOS Mainboard v0.3

Common parts

These parts are needed for every board, no matter the type of laser it will be used for.

Count Component RS Part No. RS Price Farnell Part No. Farnell Price Comment
1 ARM mbed LPC1768 Module 703-9238 € 49,53 1761179 €49,73 Mbed
1 Hirose DM1B-DSF-PEJ 685-0788 € 2,22 1764373 €2,65 reverse SD Memory Card connector
2 DIL socket,0.3in pitch, 16 pin 402-771 € 0,18 1077315 €2,17
2 Harwin M20-7832046 681-6851 € 5,31 9688862 € 7,07 Mbed Footprint
1 MAGJACK SI-60002-F 741-8477 € 4,38 1137981 €6,27 Network connector (with LEDs: Farnell:1137983)
2 IC KB847 619-2026 € 1,96 2001656 €1,37 (5 pcs min)
1 2GB SD card 539-7804 € 9,40 SD Card (cheaper at Mycom: € 4,99)
1 100R resistor 707-7587 € 0,02
1 120R resistor 707-7599 € 0,02
4 330R resistor 707-7622 € 0,02
15 1K resistor 707-7666 € 0,02
2 2K2 resistor 707-7690 € 0,02
11 10K resistor 707-7745 € 0,02
5 100nF capacitor 721-5240 € 0,07
1 22nF capacitor 721-5268 € 0,12
1 100 uF capacitor (ELCO) 520-0996 € 0,28 min. voltage: 12V
1 1000 uF capacitor (ELCO) 520-1090 € 1,31 min. voltage: 25V (depending on your motor voltage)
1 Red LED 708-2753 € 0,09
1 Green LED 708-2756 € 0,11
1 Yellow LED 708-2769 € 0,11
1 Laos PCB Rev 0.3 € 15,00 Available from our WebShop

Connectors

Phoenix

Count Component RS Part No. RS Price Farnell Part No. Comment
7 Phoenix 4-pin terminal block 189-6032 € 3,05 3705377
7 Phoenix 4-pin PCB header 189-6127 € 1,04 3705195
3 Phoenix 2-pin terminal block 189-6010 € 1,746 3705353
3 Phoenix 2-pin PCB header 189-6105 € 0,51 3705171
1 pin-header 1x4 251-8632 € 1,056

JST (HPC LS3020 Pro)

The HPC LS3020 Pro uses low cost JST connectors on their cables.

Count Component RS Part No. RS Price Farnell Part No. Farnell Price Comment
1 WUERTH ELEKTRONIK 3WAY PCB connector RIGHT ANGLE 5.08mm 189-6571 € 0,62 1641987 € 0,60 PCB Power connector
5 JST 4 pin PCB connector B4B-XH-A (LF)(SN) 543-2733 € 0,16 1516278 € 0,20 Stepper drivers, Endstop & Laser and I2C
2 JST 4 pin housing XHP-4 353-1636 € 0,07 1516266 € 0,10 For endstop and laser cable (usually provided with laser)
1 JST 2 pin housing XHP-2 353-1614 € 0,05 1516264 € 0,05 To add laser power modulation
2 JST Socket insert BXH-001T-P0.6 353-1591 € 0,04 1516301 € 0,05 To add laser power modulation

Note - You need to modify the cables a bit to connect to the correct pins, see description in the HPC installation section. Connectors may have significant minimum order quantity. You may ask Peter if he has some he can supply when ordering the PCB.

JST (HPC LS3020)

The HPC LS3020 uses low cost JST connectors on their cables.

Count Component RS Part No. RS Price Farnell Part No. Farnell Price Comment
1 WUERTH ELEKTRONIK 3WAY PCB connector RIGHT ANGLE 5.08mm 189-6571 € 0,62 1641987 € 0,60 PCB Power connector
3 JST 4 pin PCB connector B4B-XH-A (LF)(SN) 543-2733 € 0,16 1516278 € 0,20 Stepper drivers, Endstop & Laser and I2C
2 JST Socket insert BXH-001T-P0.6 353-1591 € 0,04 1516301 € 0,05 To add laser power modulation
1 FFC / FPC connector 718-8772 (straight, untested) € 0,18 1816463 € 0,30 This connector combines X-axis and endstops!

Pololu Stepper Drivers

Number Component RS Part No. RS Price Farnell Part No. Farnell Price Comment
2-4 Pololu steppers Depending on how many axis your machine has
4-8 8x1 pin-header socket 495-8587 € 1,25 3419101 € 0,56 You need 2 for each Pololu

The Pololu you need is of the type A4988: http://www.pololu.com/catalog/product/1182

We recommend a heatsink with the pololu, as sold here: ultimachine.com and here: reprap.me

Laos_rev3.png View - board, top view (30.8 KB) Anonymous, 2012-07-12 20:58

DSC_3506.jpg View (152 KB) Anonymous, 2012-07-12 21:27

laos-board-rev3.pdf - PDF of the schematics of rev0.3 board (126 KB) peter, 2012-09-09 15:41

PI_E453774.pdf - Rev 0.3 PCB rendering (516 KB) peter, 2012-09-09 15:45