RAMPS 1.7
Release status: Prototype
Description | RepRap Arduino Mega Pololu Shield
Arduino MEGA based modular RepRap electronics.
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Contents
Summary
I am working on developing a RAMPS version that will allow TMC2130 drivers (using SPI) to be used, simply by moving some jumpers.
This is a link to a forums discussion about the board
The board is also meant to be usable with 32-bit processors that use 3V logic, like the Arduino DUE
Sources
Design files
As soon as I know that the design actually works, all files I have/use will be made available.
Schematics
As I use a pcb layout software package that does not include a schematics connection, I actually did not have any complete (paper/computer) schematics before doing the pcb layout. Because of restrictions for the RepRap wiki, the schematics will be made available here as images. For pdf versions see: Repository at GitHub
Heated Bed circuit
Click picture for larger versions
Bill Of Materials
A (partial) list of components that are used for this board.
ID | Description | Quantity | Digikey Part Number (Description) | Other supplier | Notes |
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C1 | Low ESR 100uF/35V | 6 | PCE4554CT-ND | ? | 6.60mm x 6.60mm |
C2 | 10uF/16V | 3 | 399-17336-1-ND | ? | 4.30mm x 4.30mm |
C3 | 1-10uF / 6V / 0805 | 1 | CAP CER 10UF 6.3V X5R 0805 | ebay option | 0805 |
C6 | 100nF / 6V / 0805 | 8 | CAP CER 0.1UF 50V X7R 0805 | ebay option | 0805 |
C7 | 1-10uF / 35V / 0805 | 1 | CAP CER 10UF 35V X5R 0805 | ? | 0805 |
C8 | 10uF/35V | 1 | 732-8503-1-ND | ? | 4.30mm x 4.30mm |
Q3,Q4 | IRLB3034 N-channel mosfet, 2 mili Ohm, 40V |
2 | IRLB3034PBF-ND | ? | TO-220 |
Q3,Q4 Alternative | IRLB8743 N-channel mosfet, 4 mili Ohm, 30V |
2 | IRLB8743PBF-ND | ? | TO-220 |
Q1, Q2 | IRLR7843 N-channel mosfet, 4 milli Ohm, 30V |
2 | IRLR7843PBFCT-ND | ? | TO-252 |
N | AO3400 N-channel mosfet, 33-52 milli Ohm, 30V |
4 | 785-1000-1-ND | ? | SOT-23 |
IC | 74LS125 | 1 | SN74LS125ADR | ebay option | 14-SOIC (0.154", 3.90mm Width) |
IC | 24LC256 | 1 | 24LC256 | ebay option | 8-SOIC (0.154", 3.90mm Width) |
S1 | 4-pin 7.62mm screw terminal | 1 | ?d | ?o | ?n |
S2 | 2-pin 5.08mm screw terminal | 4 | ?d | ?o | ?n |
R1 | 100K 0805 | 10 | Digi option | ebay option | 0805 |
R2 | 10K 0805 | 6 | ?d | ?o | 0805 |
R3 | 4K7 0805 | 13 | ?d | ?o | 0805 |
R4 | 2K2 0805 | 7 | ?d | ?o | 0805 |
R5 | 10R 0805 | 6 | ?d | ?o | 0805 |
R6 | 1K 0805 | 1 | ?d | ?o | 0805 |
R7 | 680R 0805 | 1 | ?d | ?o | 0805 |
E1-3 | Green LED 0805 | 3 | ?d | ?o | 0805 |
E4 | Red LED 0805 | 3 | ?d | ?o | 0805 |
E5 | Yellow LED 0805 | 1 | ?d | ?o | 0805 |
D2 | diode 1N5822 TH | 1 | 1N5822G | ebay options | Any 3-10A diode will do fine |
D1, D3-D5 | diode 1N4007 smd | 4 | DIODE SCHOTTKY 30V 1A DO214AA | ebay options | Housing: DO-214AA / SMB |
Diode | 1N5819 / S4 - smd | 5 | Digi Options | ebay options | SOD-123 or "DO-213AB, MELF (Glass)"
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Fuse options
ID | Description | Quantity | Digikey Part Number (Description) | Other supplier | Notes |
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F1,F2 | Auto blade fuse / 1808 | 2 | ?d | ?o | ?n |
F3 | TH fuse / 0603 fuse | 1 | ?d | ?o | ?n |
F4,F5 | 1206,24V, 2A poly fuse | 2 | ?d | ebay example | ?n |
Pin headers
ID | Description | Quantity | Digikey Part Number (Description) | Other supplier | Notes |
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2p male | txt | ? | ?d | ?o | ?n |
3p male | txt | ? | ?d | ?o | ?n |
8p female | txt | ? | ?d | ?o | ?n |
2p female | txt | ? | ?d | ?o | ?n
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