For some law and order I suggest that we let this run it's cause. Anyone who is not satisfied may request the owner of the design for permission to duplicate it and run an other GB.
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I'd wait for Roberty to reply before anyone places any orders 🙂
The only points I'd make from my side is:
- I don't want to change the finish (sorry TNT!). They've come up with the price and it's a personalised approach they've done and I don't have the heart to ask them to change many things. For what it's worth, I don't think tin would be any cheaper from these guys - they do ENIG day in / day out. Less than £5 for an ENIG board represents good value for money in my experience, particularly when it's coming from a proper EU lab with a certain level of quality.
- I've never organised a GB on diyaudio. Whilst I'm happy to help out, the pricing I obtained was based on 100 units. This is a relatively important financial outlay (particularly for the assembled board) which I'm going to have to fork out of my own pocket if/when we go ahead and I place the order. I would need some kind of guarantee that the majority is going through. I don't want loads of people pulling out without paying, leaving me with a pile of boards out of my own pocket.
We need to set some relatively strict ground rules IMO if this is to work out. Ordering 100 units will require quite a lot of time from my side to package / post / organise everything. As I said, I'm happy to help out, I just don't want to get stuck and have a lot of agro.🙂
The only points I'd make from my side is:
- I don't want to change the finish (sorry TNT!). They've come up with the price and it's a personalised approach they've done and I don't have the heart to ask them to change many things. For what it's worth, I don't think tin would be any cheaper from these guys - they do ENIG day in / day out. Less than £5 for an ENIG board represents good value for money in my experience, particularly when it's coming from a proper EU lab with a certain level of quality.
- I've never organised a GB on diyaudio. Whilst I'm happy to help out, the pricing I obtained was based on 100 units. This is a relatively important financial outlay (particularly for the assembled board) which I'm going to have to fork out of my own pocket if/when we go ahead and I place the order. I would need some kind of guarantee that the majority is going through. I don't want loads of people pulling out without paying, leaving me with a pile of boards out of my own pocket.
We need to set some relatively strict ground rules IMO if this is to work out. Ordering 100 units will require quite a lot of time from my side to package / post / organise everything. As I said, I'm happy to help out, I just don't want to get stuck and have a lot of agro.🙂
Well me signing the web XL is for a GB organized by Bertel. I would only jump aboard on an other one if a new thread is started by the an other organizer. Anything else is just a mess as I see it.
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I'm just keen to get this up and running.
It is now nearly 5 months since the original proposal (18 Sept).
With due respect to Robert for seeing an opportunity for a terrific group buy and build, he has stated that work commitments have precluded him from advancing this.
If Robert gives his blessing I'm more than happy with tfboy to take control of the buy.
Having never done any SMD work myself I look forward to learning, which is what DIY should be about.
Though the prices indicated for part assembled boards look an interesting alternative to possibly learning the hard way 🙂.
It is now nearly 5 months since the original proposal (18 Sept).
With due respect to Robert for seeing an opportunity for a terrific group buy and build, he has stated that work commitments have precluded him from advancing this.
If Robert gives his blessing I'm more than happy with tfboy to take control of the buy.
Having never done any SMD work myself I look forward to learning, which is what DIY should be about.
Though the prices indicated for part assembled boards look an interesting alternative to possibly learning the hard way 🙂.
The semi assembled board price looks reasonable. Would we have 's emanate column for the semi as emailed boards in the xls? Once the price is agreed
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Hi TNT et all,
In the interest of clarity, the suggestion to obtain a quote from my local assembler was in agreement with Robert / Bertel.
Should he wish someone else takes over as he's busy with work, I'm happy to facilitate. It's "either/or". I'm not doing this in parallel to Bertel 🙂
In the interest of clarity, the suggestion to obtain a quote from my local assembler was in agreement with Robert / Bertel.
Should he wish someone else takes over as he's busy with work, I'm happy to facilitate. It's "either/or". I'm not doing this in parallel to Bertel 🙂
Anyway if we proceed with smd pre soldered boards I would be in for two
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OK, I've had another chat with Robert, and we have agreed it makes sense for him to relinquish this GB, so I'll take over 🙂
I would strongly suggest people go for the SMD-assembled board. I have had confirmation that it's for the manufacture of the PCB and sourcing and assembly of all SMDs. All through-hole components: relays, XLR connectors, Hypex (or standard) voltage regulators, connectors are EXCLUDED.
We / I can get in touch with Hypex to arrange a sub-group buy for pairs of regulators and maybe we can benefit from a discount there.
I'll amend the shared document, adding a column for this new semi-assembled board and another column for those who want the Hypex regulators as well.
You'll then just have to source the other components (relays, connectors and XLR sockets).
I would strongly suggest people go for the SMD-assembled board. I have had confirmation that it's for the manufacture of the PCB and sourcing and assembly of all SMDs. All through-hole components: relays, XLR connectors, Hypex (or standard) voltage regulators, connectors are EXCLUDED.
We / I can get in touch with Hypex to arrange a sub-group buy for pairs of regulators and maybe we can benefit from a discount there.
I'll amend the shared document, adding a column for this new semi-assembled board and another column for those who want the Hypex regulators as well.
You'll then just have to source the other components (relays, connectors and XLR sockets).
Many thanks for taking over Xavier!
I really have to apologize for not being able to give this GB and you members the attention deserved, thus dragging this on for so long, I'm currently setting up a new company and just can't find any time to spare for anything else.
So yes, please kindly continue with this GB and the excellent third solution of a SMD-assembled board, surely very helpful for many!
Thanks again,
Robert
I really have to apologize for not being able to give this GB and you members the attention deserved, thus dragging this on for so long, I'm currently setting up a new company and just can't find any time to spare for anything else.
So yes, please kindly continue with this GB and the excellent third solution of a SMD-assembled board, surely very helpful for many!
Thanks again,
Robert
I have added columns D and E in the shared file. http://1drv.ms/1Kqpavx
Please mark your interest there.
It would be great if we could get near 100 units (we were at 98 + 15 before). This will ensure the good price.
I'll check for a GB price for the Hypex HxR regulators.
Please mark your interest there.
It would be great if we could get near 100 units (we were at 98 + 15 before). This will ensure the good price.
I'll check for a GB price for the Hypex HxR regulators.
£15 for board will all SMD. Well I was going to use this as a chance to learn SMD but at that price churlish not to. Just need to work out how many boards I need vs want 🙂
@tfboy: where in Reading are you and do you like beer?
@tfboy: where in Reading are you and do you like beer?
I am unable to edit it could someone help me to put me in for 2x smd pre soldered boards
Thanks
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Thanks
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Many thanks to Robert for getting this off the ground, and equal thanks to Xavier for taking over.
looking forward to the build.
This is a link to the online Excel spreadsheet. You should (?) be able to edit it direct from this link.
https://onedrive.live.com/view.aspx...=file,xlsx&app=Excel&authkey=!AD67dr03ABOz4GQ
I have also removed my PCB order when changing to part assembled boards.
@ Aradan I have updated for you.
looking forward to the build.
This is a link to the online Excel spreadsheet. You should (?) be able to edit it direct from this link.
https://onedrive.live.com/view.aspx...=file,xlsx&app=Excel&authkey=!AD67dr03ABOz4GQ
I have also removed my PCB order when changing to part assembled boards.
@ Aradan I have updated for you.
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Xavier/tfboy,
A little learned from the past to run a GB, add 10% or so to the cost so that you can order a few more. For example, order 110 pcb's for 100 boards requested by the members and spread the cost of 110 amongst the 100 boards.
Why? There is always a chance that the mail gets lost, in which, you have a few spare to resend. There are always those Johnny comes lately after the GB is closed. The spare can help those late chaps. If you end up with a little surplus after all, buy yourself a nice 6-pack and enjoy. Many of us are too far away to do so to say thank you 🙂
A little learned from the past to run a GB, add 10% or so to the cost so that you can order a few more. For example, order 110 pcb's for 100 boards requested by the members and spread the cost of 110 amongst the 100 boards.
Why? There is always a chance that the mail gets lost, in which, you have a few spare to resend. There are always those Johnny comes lately after the GB is closed. The spare can help those late chaps. If you end up with a little surplus after all, buy yourself a nice 6-pack and enjoy. Many of us are too far away to do so to say thank you 🙂
I'm sure Bertel's original BOM had tight tollerences of 0.1% and yet looking at the current BOM they have been downgraded to 1%..
I thought the critical point of Putzey's design was the very tight impedance matching between the paths.
Which SMDs would be on the ready-constucted board 1% or 0.1%? Personally I am only interested in the original spec of 0.1% which certainly can't be done for £15 - I think many of the SMDs were €4 each or so - and that's why €330 was quote for the fully populated boards originally.
Would you be willing to get a quote for 0.1% ?
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That's true and if you check the dimensions in the datasheet you will found that the pads in the PCB are not done for the 0,1% proposed in the Bertel's BOM.
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