TL;DR guide: questions are bolded, specifics are linked
I'm looking to buy some parts for re-building a pre-designed circuit, but I need some help figuring a few specifics out so I don't buy the wrong part (and perhaps learn more about how the parts work in the process). Any help is greatly appreciated
BitFury just released some new Bitcoin Mining hardware. Some friends and I decided to invest in it but there's a bit of a catch- Buying their M-board (master board) that connects their H-Boards (hashing boards) to a raspberry Pi costs over $700 (the hashing boards themselves only cost $500). I thought it would be a fun challenge to bypass the M board, or build my own in breadboard form, so that I can hook up a few H boards to an rPi. I contacted the distributor asking about this, and they were kind enough to send me schematics!
I've figured out a few parts of it- there's a 4-Bit Bi-directional V-Level Translator, which I totally get- it converts a digital signal between 3v3 and 5v.
Then there's the DC/DC Switching Converters 4.5-18Vin,Dual 4A/2A Out,Sync SD Cnvrtr. I understand the purpose of this, from reading Wikipedia, but I don't know how each of the attached components affects the operation. In the schematic, there are a few resistors without listed values, and I'd like to figure out what kinds of resistors to use here (see R1F through R4F in schematic). I can tell what type of capacitors are used, and what their capacitance needs to be, but what about their voltage? Lastly, there are two L_SPM6530 inductors, but their inductance is labeled x.yU, rather than an actual value.
There's one more question I have, and that's about the H-Board connectors: The schematic calls for some CON_CARD_EDGE_2x10. I looked up 20 pin card edge connectors on Mouser, and there are hundreds of choices. It's a fairly simple thing, so I'm sure I could pick almost any one and it would fit the card, but I'm looking for whatever would be the easiest for me to wire up to my breadboard.
Thanks for taking the time to read through my questions!
I'm looking to buy some parts for re-building a pre-designed circuit, but I need some help figuring a few specifics out so I don't buy the wrong part (and perhaps learn more about how the parts work in the process). Any help is greatly appreciated
BitFury just released some new Bitcoin Mining hardware. Some friends and I decided to invest in it but there's a bit of a catch- Buying their M-board (master board) that connects their H-Boards (hashing boards) to a raspberry Pi costs over $700 (the hashing boards themselves only cost $500). I thought it would be a fun challenge to bypass the M board, or build my own in breadboard form, so that I can hook up a few H boards to an rPi. I contacted the distributor asking about this, and they were kind enough to send me schematics!
I've figured out a few parts of it- there's a 4-Bit Bi-directional V-Level Translator, which I totally get- it converts a digital signal between 3v3 and 5v.
Then there's the DC/DC Switching Converters 4.5-18Vin,Dual 4A/2A Out,Sync SD Cnvrtr. I understand the purpose of this, from reading Wikipedia, but I don't know how each of the attached components affects the operation. In the schematic, there are a few resistors without listed values, and I'd like to figure out what kinds of resistors to use here (see R1F through R4F in schematic). I can tell what type of capacitors are used, and what their capacitance needs to be, but what about their voltage? Lastly, there are two L_SPM6530 inductors, but their inductance is labeled x.yU, rather than an actual value.
There's one more question I have, and that's about the H-Board connectors: The schematic calls for some CON_CARD_EDGE_2x10. I looked up 20 pin card edge connectors on Mouser, and there are hundreds of choices. It's a fairly simple thing, so I'm sure I could pick almost any one and it would fit the card, but I'm looking for whatever would be the easiest for me to wire up to my breadboard.
Thanks for taking the time to read through my questions!
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