I am building from the latest version of the Aisler PCB Drv8825-HW203.
I have looked in all the documents but I cannot find the correct schematic for this board. I had purchased all the components using the parts spreadsheet but this board seems to use some different components. For instance there is not one diode but now there are three (LN5408, HER208 and LN4732A) and they all seem needed. I would be great to have the schematic so I can ensure with one more order I can get all the componets I need.
Thanks
Rishi
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1N5408 is for voltage reverse protection
HER208 is to prevent Arduino providing prower through LM7808 when 12V power is off
1N4732A is 4.7V Zener used for 12V stepper power detect circuit (can be left out)
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Thanks. I have been searching for the HER208 in Europe and although I can order it in China I would prefere to get it locally. Any idea's about an equivelent?
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hi All
I am building from the latest version of the Aisler PCB Drv8825-HW203.
I have looked in all the documents but I cannot find the correct schematic for this board. I had purchased all the components using the parts spreadsheet but this board seems to use some different components. For instance there is not one diode but now there are three (LN5408, HER208 and LN4732A) and they all seem needed. I would be great to have the schematic so I can ensure with one more order I can get all the componets I need.
Thanks
Rishi
Found it! As usual after I posted I saw the link on the docs pages.
1N5408 is for voltage reverse protection
HER208 is to prevent Arduino providing prower through LM7808 when 12V power is off
1N4732A is 4.7V Zener used for 12V stepper power detect circuit (can be left out)
Thanks. I have been searching for the HER208 in Europe and although I can order it in China I would prefere to get it locally. Any idea's about an equivelent?
If you do not intend to use the 12V stepper power detect then just short it out on the PCB.
Any 2A
FR207
RL207
BY299
HER205
In general any 2A diode should be ok. You might even get away with something like 1N4004 as the current should be < 1A