Crowdfunding as a group buy for the EEZ H24005 - diyAudio
Go Back   Home > Forums > Commercial Sector > Group Buys
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Group Buys Members group buys

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 9th December 2016, 11:59 AM   #1
diyAudio Member
prasimix's Avatar
Join Date: Feb 2009
Default Crowdfunding as a group buy for the EEZ H24005

I'm opening this new topic to discuss crowdfunding related things connected to the open source project that is active for some time here.

The project is "positioned" to bridge the gap between the DIY and professional worlds, and have a great potential to disappear in that gap or become an example how to combine the best practice from both worlds .

The campaign will be conducted on the CrowdSupply and I'd like to hear your opinions about pledge levels. First please note that I'm not going to offer a completed solution. The reason for that is CE/FCC certification that is very costly and for 100 units that is campaign goal it could make a whole calculation completely unattractive.
Also please note the campaign is conceived as group buy to achieve few goals:
  • Manufacture assembled modules (combined they have almost 800 items and that is far too much for many DIYers/makers despite the fact that DIY-friendly SMD packages are solely used)
  • Manufacture compact metal enclosure to mount safely all parts and
  • Decrease the cost per unit
Again, this is a group buy, not a new product production kick start, because it's not a profit driven (I have another source of money for living). Therefore prices of all pledges will be set to cover without loss the cost of manufacturing, transportation cost, crowdfunding platform (12%) and payment gateway fees (2.9%).
I was thinking about the following pledge levels (the final number and contents will be set in accordance with your wishes):
  1. Set of bare PCBs only (4 of them, 2 layer)
  2. As above + metal enclosure (with other metal parts such as TFT display support, AC/DC modules support, channel's heatsinks)
  3. Set of assembled PCBs only
  4. As above + metal enclosure set + wire harness
  5. As above + TFT display + AC/DC modules (2 of them)
  6. As above + Arduino Due
The latest one include all what is needed to assembly a fully functional unit that can be ready to run after firmware is uploaded. In essence you'll need a screwdriver for that operation and PC with Arduino IDE for uploading. Of course, you also need multimeter to calibrate it using built-in calibration wizard.

Thanks in advance for your valuable inputs.
  Reply With Quote
Old 4th January 2017, 05:19 PM   #2
diyAudio Member
prasimix's Avatar
Join Date: Feb 2009
The crowdfunding should start any day now, and I decided to reduce number of pledge levels to four to simplify logistics:

Level A (PCBs)
Set of four bare PCBs that has to be populated using convenient SMT components for hand soldering.

Level B (Mechanical parts)
2U height metal enclosure predrilled and painted, nuts&bolts, wire harness and electromechanical parts (AC inlet, cooling fan, binding posts, etc.) required to mount and interconnect all modules inside the enclosure.

Level C (Core modules)
Fully assembled and tested set of four modules that represents the core of the EEZ H24005:
  • 1 x AUX PS module,
  • 2 x Power board, and
  • 1 x Arduino shield (carry Arduino Due or compatible board)
Level D (Almost completed)
Include all from Level B and Level C and few items to make fully functional unit, or when listed all together that is:
  • enclosure,
  • nuts&bolts,
  • wire harness and electromechanical parts,
  • fully assembled and tested core modules,
  • 3.2" color touch-screen display,
  • Arduino Due board and
  • 2 x AC/DC modules (115/230VAC) with power cable.
All other combinations we can manage individually if this group buy succeed.
  Reply With Quote
Old 6th January 2017, 12:50 PM   #3
diyAudio Member
prasimix's Avatar
Join Date: Feb 2009
Default Full teardown picture...

CrowdSupply team spent some time to make a full teardown of the PSU . That is a picture of what will be included into Complete kit (Level D):

Click the image to open in full size.
  Reply With Quote
Old 6th January 2017, 08:40 PM   #4
diyAudio Member
prasimix's Avatar
Join Date: Feb 2009
Default EEZ H24005 group buy/campaign is now live

Dear all, please note that campaign is now live and I'd like to thanks once again to all good people from this forum who contribute in various way to this project. Here is the campaign link.
  Reply With Quote
Old 18th January 2017, 07:40 AM   #5
diyAudio Member
prasimix's Avatar
Join Date: Feb 2009
Default Thank You and Stretch Goal Survey

Thanks to everyone who helped us reach our funding goal in less than two weeks! We still have over a month left in the campaign, so there’s plenty of time to exceed our initial goal and hit some stretch goals. There are a lot of features we’ve been thinking about and we’d like to hear your opinion. Please take our survey to help determine our stretch goals.

We’ll likely make decisions about stretch goals within the next few days, so please take the survey as soon as you can.
  Reply With Quote
Old 24th January 2017, 11:23 AM   #6
diyAudio Member
prasimix's Avatar
Join Date: Feb 2009
Default Encoder is coming ...

A short version of latest campaign update: the survey is now closed, and I want to thanks to all participants (250+). I got a lots of idea what can be done in the future. But some of them could be easily (and finally?) added into current design and that is mechanical (placement on the PCB) and firmware support for encoder . That is a first stretch goal that I can say with confidence that will be reached, firmware development for adding encoder is almost completed and I'm going to show that soon in a new video.
  Reply With Quote
Old 25th January 2017, 06:49 PM   #7
diyAudio Member
dudaindc's Avatar
Join Date: Sep 2005
Location: Metro Washington DC
I have been following the original development from the start.
The outcome is nothing short of awesome!

Checking my savings account now...
"All measurements are wrong! Thus, measurement is the art of handling errors."
  Reply With Quote
Old 31st January 2017, 09:55 AM   #8
sagitis is offline sagitis  Australia
diyAudio Member
Join Date: Jan 2009
from the photo you supplied would you mind can circle us which parts are included in part C ?
  Reply With Quote
Old 31st January 2017, 10:10 AM   #9
diyAudio Member
prasimix's Avatar
Join Date: Feb 2009
Originally Posted by sagitis View Post
from the photo you supplied would you mind can circle us which parts are included in part C ?
It's four assembled main modules without heatsinks that are part of the Enclosure and Assemblies pledge level (or Level B as titled before):

Click the image to open in full size.
  Reply With Quote
Old 19th February 2017, 10:10 AM   #10
diyAudio Member
prasimix's Avatar
Join Date: Feb 2009
Default Enclosure and asemblies pledge level

A respectable number of people decided to support this project by pledging for bare PCBs. Many thanks for that. I'd like to draw their attention in this final days to something what I believe is really worth considering once again and that is Mechanical assemblies that includes some parts that when are ordered alone could easily exceed the total price of that pledge. That is obviously customized enclosure, but not just enclosure alone, since it comes with two customized heatsinks (cut to size!) for Power boards and mounting rail for mounting TFT display among other stuff.
Without going into more details, I'd like to suggest you to check attached BOM of that pledge level where I marked in red few items that I found that is "difficult" (i.e. expensive) to order separately.
Attached Files
File Type: pdf EEZ H24005 r5B12 - Enclosure and Assemblies BOM.pdf (67.8 KB, 6 views)
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Crowdfunding for vacuum tubes/nixie/neon/scientific glassblowing workshop customnixies Everything Else 8 25th April 2016 06:15 PM
Group buy how to: AmpUtator Group Buys 1 15th September 2013 06:49 PM
Tea-Bag's IXYS Depletion Mosfet Group and SemiSouth R100 JFET group buy. Tea-Bag Group Buys 330 20th May 2013 02:03 PM
VBITNGC group buy digi01 Group Buys 47 28th February 2006 08:21 AM

New To Site? Need Help?

All times are GMT. The time now is 04:40 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2