After a few months of waiting, I can publish now this model for free. Sorry about the delay. Feel free to print (only if you have a MirkoPC REV1.1 board).
Still, now it's very hard to order any integrated circuits.
I really don't know who will manufacture the next batch.
After I will manufacture the 2nd and 3rd order batches I have to close or freeze this project due to a very hard situation on the market with components - IC shortage. Most of the ICs have lead time ~52 weeks.
I have to say sorry! Sorry about my no answer, sorry about my delayed response, sorry about the whole situation. I had two weeks off due to my personal issues.
This project beat me - to much work, to much assembly, to much things to do in the same time for a single person, I'm overloaded.
I tried to assembly the boards with 2 colleagues but even for that was too much work for a small team. Now I'm working alone and I really don't know that the next 2 weeks should be enough for finish the assembly of the rest of the 30 pcs.
Sorry! This project was one of the stupidest idea that I made (due to overloading). IC shortage and issues with partially assembled and ordered PCBs - these things beat me - because I tried to manually assembled all the boards with missing components.
For next few days I will prepare and test 20 pcs for the first customers that paid the initial payment - please see the picture below.
After I will finish the whole assembly and test the rest boards (about 50 pcs and for another project - bitpirat - about 15 pcs) I will close any manual assembly and testing.
The next batches will be manufactured by external companies and boards will be offered by at least one distributor from Europe (Denmark or UK), if everything will be OK.
Really sorry for my delayed response and my project update and status. I have to say 'so sorry'.
Project delayed about one month (I planned to start shipping in the second half of May), but the current plan for shipping is the first half of June.
I need about 2 weeks to assembly the rest of the components. I have all the needed components.
I will assembly manually only 10 pcs (due to is too much work for one guy), the rest of the PCBs I will order manual assembly at some small EMS company service.
During this manufacturing stage I faced on few hard issues:
1. the biggest issue - component issue, almost all integrated circuits are not available on market (empty stock), due to Covid, pandemic and automotive industry mass production.
I sourced components from many different shops, such as Mouser, DigiKey, TME, LCSC, Texas Instruments, Allegro, Kamami, and even Aliexpress and TaoBao.
2. I had 1 week of delay with my PCB manufacturer (DFM review for my approval).
3. I had 1 week of delay due to FedEx service and customs procedure and shipping delivery.
4. In total I have about 3 weeks of delay on the manufacturing stage due to external issues.
5. Now I need about 2 weeks for manual assembly and about 1 week for the shipping process.
Things to do:
1. manual assembly 50 pcs (by me and some EMS company)
2. create simple firmware for push-button controller (microcontroller)
3. test all the boards and functionalities
4. prepare the shipping for all users and customers
5. update and prepare Github documents and user manual
2 weeks ago I decided to left the company, where I worked as a regular employee, to have more time for the MirkoPC project and future designs and soon I hope to create my own company. Next week I will be free for 100%.
The good news is that MirkoPC GEN2 (R1.1) will have a colored pin header (HAT connector) and unique power switch (tactile switch).
Please forgive me for that situation, but I'm just want to finish this project and to deliver ASAP even if this is impossible these days (IC shortage times and pandemic).
So, summarizing I need about 2 weeks to assembly and 1 week for shipping (I hope).
I will send over 40 packages to all my users and customers so please be patient and keep your fingers crossed! Wish me luck!
I attached the partially assembled boards (5 pcs).
just a quick preview - this is what the 2nd and 3rd batch looks like.
I can see two issues for now: - slide switches on 3rd batch are damaged, too high temperature on the reflow process - some mezzanine connectors need to correct its placement
Mirko
PCM5100A:
USB2514B:
ATTINY5:
AP3441:
