Sanguish
Release status: working
| Description | All in one electronics with Toshiba drivers
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| License | [GPL]
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| Author | |
| Contributors | |
| Based-on | |
| Categories | |
| CAD Models | |
| External Link | (none)
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Build Sanguish ----- Firmware for Sanguish ----- Use Sanguish
Sanguish is an all-in-one electronics platform similar to Gen7 and Sanguinololu. The main difference is that Sanguish is using the through hole Toshiba TB6560AHQ drivers in place of the Pololu driver daughter boards. The main advantage is cost savings, as the Toshiba drivers are much less expensive than the Pololu boards. In addition it is likely that the Toshiba drivers will allow higher current motors to be used. The HZip form factor will be much easier to heat-sink, and the drivers will handle more current before requiring a heat sink than the Pololu drivers will.
Note: The enable line is inverted from the way it works on the Pololu drivers so this needs to be changed in firmware for correct operation. Smoke containment should now be enforced by the relay that powers the drivers
Contents
Features
Only the basics
The relay for driver power should enforce the power on sequence required by these drivers
4 drivers, 2 FETS, 2 Temp inputs, 3 Endstop inputs, Header for arduino USB to serial cable, expansion header.
Polyfuze on each heater and for the motor drivers.
Made for DIY kit builders and sellers
Very inexpensive to build
4 TB6560 drivers capable of handling over 2 amps of current easily
How to get it
PM me [bryanandaimee] in the forums. Beta boards will be sold assembled and tested to help the beta test go smoothly. There are 20 beta boards available. Cost will be $40 assembled plus actual shipping cost. That's an assembled board including drivers for the cost of a cheap chinese (driverless and unassembled) Sanguinololu kit! That's basically my cost plus $5 or so for my time assembling and testing. Cost will go up to something more reasonable when the initial production release is out. I'm thinking that about $45 or $50 for an unassembled kit would be about right.
Beta board:
Update! May 2013: I have some boards built and have completed the first full test print. Over an hour printing at 2 amps per stepper and with a full sized heated bed. As a result I will be selling the remaining beta boards to willing testers.
March 2013 Just finished the beta board for the board houses. It's probably still pretty rough but I expect that it will perform fairly well.
Changes from alpha:
The relay wiring is fixed.
The layout is now under 10 cm X 10 cm so it can be made very cheaply at seeedstudio or iteadstudio
The power toggle issue comes from the sanguino bootloader which toggles PB0 on reset. This issue can be fixed by using the Gen7 bootloader. Perhaps in future revisions the power pin can be moved to an inactive pin to allow flexibility to use either bootloader.
Files: Here are the files, File:Sanguish Beta.zip if you want them. I would wait for 1.0 before doing any solo builds. If you want one now, please buy a beta board.
TODO for Version 1.0:
Sanguish 1.0 RC1 is ready. I'll be getting some boards and doing some testing soon.
Beef up the power traces for the heaters. Done
Move FET's for better heatsink clearance. Done
Add Fan connectors (always on)Done
Add second stepper connector for Z axis. Done
check on compatibility with SD card boards, and controller kits. Done
Add some power indicator lights for main power and motor power. Done
Add jumper for reset line on serial cable instead of socketing the cap. Done
Fix schematic symbol for relay to reflect correct pinout and part
Add more info to the silkscreen. Done
Add current limiting resistor for relay coil. Done
Add mounting holes if possible. Done
USB-Serial on board if possible. Done.
Current limiting resistor for jumpers. Done
Move stepper connectors to the edge of the board for easier connections. Done
Combine enable lines to free up some pins. Done
Add header for common cheap USB adapter boards. Done
PCBs
I have the first 20 boards and I am building them slowly. The first board has successfully completed a long (over one hour) print. Update: I have run my test board for over 24 hours of printing and haven't come across any harware related issues yet. In addition there are 5 Beta boards (soon to be 7) in the wild and reports are beginning to come in from them.
Components
Here is the preliminary Mouser project. Mouser project
It should have everything in it needed to build the basic board. No external parts are included. So cabling, end-stops, etc. are left to the user to source. You can of course use the Gen7_Endstop_1.3.1 or use mechanical end-stops. The mouser project is still pretty rough as the parts list is a bit fluid at the moment.
Cost
The mouser project with all needed components comes to $49 in QTY 1 and $404 in QTY 10. In order to bring down the total cost I substituted the pin and socket headers, capacitors and screw terminals from Tayda electronics. This brings the total to
Mouser components = $260.97 + S+H (est $12) = $272.97
Tayda components = 21.20 + S+H 5.99 = $27.19
PCB Seeedstudio Fusion PCB 10x10 cm = $24.90 + S+H $7.79 = $32.69
Total = $332.85
Got the board under 10x10 cm which brings the board cost way down. Now I'm down to $35 per kit(qty 10)! I just ordered two batches for beta testing, one from seeedstudio.com and one from iteadstudio.com, so I'll be able to compare the two services.
Update: Both board services shipped and arrived at about the same time. Both sets of boards look just fine and both seem to produce useable boards. I'll know better if there are any issues when the beta testers start giving feedback.
Parts List
Electronic Components
| Description | Part Number | Quantity | Comments
|
|---|---|---|---|
| 560 Ohm resistor | 0 | 5 | LED and Transistor bias |
| 4.7 KOhm resistor | 0 | 3 | Temp and reset |
| 0.5 Ohm 1/2 W resistor | 0 | 16 | Current sense resistors |
| 40 pin female header | 0 | 3 | Sockets for driver chips |
| 40 pin male header | 0 | 3 | jumper headers, connectors etc. |
| 10 A Relay | 0 | 1 | Power on sequencing switch |
| 40 Pin Dip socket | 0 | 1 | Socket for Atmega |
| ATMega | 0 | 1 | |
| Crystal | 0 | 1 | 16 or 20 MHz |
| 22 pf Capacitor | 0 | 2 | for crystal oscillator |
| NO Push button switch | 0 | 1 | Reset Switch |
| 0.1 uf ceramic capacitor | 0 | 13 | various |
| 10 uf electrolytic capacitor | 0 | 6 | driver isolation and temp |
| 100 uf electrolytic capacitor | 0 | 3 | power input caps |
| Toshiba TB6560AHQ drivers | 0 | 4 | drivers |
| FET | 0 | 3 | heaters and relay driver |
| LED | 0 | 2 | heater indicators |
| 2 pos screw terminal | 0 | 4 | power in and heater out |
| 100 pf ceramic capacitor | 0 | 4 | driver clock capacitors |
Initial build
The initial build is done and ready for testing. Here is a picture of the board ready for atmega and drivers. The initial board was made using toner transfer on single sided copper clad. This design is not optimal for single sided manufacture and lots of jumpers will be required to complete the board. If it performs as expected all future boards will be manufactured double sided boards. As you can see the drivers and atmega are socket-ed for easy replacement as these are the components that most often get damaged and need replacement.
Update: 2-25-2013 Initial testing is complete with with a few initial issues, but overall the tests are going well.
Update: Dec 2012 The board has passed the initial movement tests.
Known issues with alpha board:
The relay is wired incorrectly
The power control pin may need to be moved to correct an as yet unexplained toggling of the relay.
