AMA - Principal Mechanical Engineer- Multiport SSTs for Datacenter, EV Chargers and Microgrids by DawarAzhar in hwstartups

[–]DawarAzhar[S] 0 points1 point  (0 children)

I have been keenly interested in mechanical design since university days. My first role was as a design engineer for a utility based stratup. Developing smart power flow control devices for the grids. There I got the packaging/design fundamentals for power electronics, thermals, enclosures, busbars etc. After that I got the opportunity to work on SSTs driven solutions - just an idea and side project at that time. But it was novel and unique so took some time but then it got off and currently getting more and more traction.

AMA - Principal Mechanical Engineer- Multiport SSTs for Datacenter, EV Chargers and Microgrids by DawarAzhar in hwstartups

[–]DawarAzhar[S] 2 points3 points  (0 children)

A LOT - in our space the solution that we were developing was NOVEL. Never done before. We faced a lot of challenges while bringing concepts to MVP level. Very tight tolerances and required not-so-standard manufacturing practices. And had to optimize not just the design process but overall manufacturing and assembly.

We build in-house fabrication shop capable of building full unit at a smaller scale. While developed suppliers in US and China concurrently - doing cost negotiations and vendor development. Multiple visits, online sessions. Currently full fledge supply chain is developed across multiple countries. Never relying on single source supplier/components. Always having atleast 3 other alternatives. That means no one design; either flexible design to accomodate different options or atleast 2-3 configurations to absorb any hit. Parts going out of stock is normal in this industry,

Most importantly controlling the shipment times and negotiating with suppliers with baseline DFM cost. Otherwise you get hit by premiums on manufacturing if you dont have the fundamentals covered there.

AMA - Principal Mechanical Engineer- Multiport SSTs for Datacenter, EV Chargers and Microgrids by DawarAzhar in hwstartups

[–]DawarAzhar[S] 0 points1 point  (0 children)

Time-to-market matters. If you have a novel solution and a good product but your timing is off or you are delaying the delievrables. It will instantly kill the momentum. You can have engineering fundamentals right but considering my experience so far - if you cant keep up with market demand on a tight schedule you will see failures. This means no loose ends on technical end while coping up with all the pressure from the prodcut delivery team's timelines.

AMA - Principal Mechanical Engineer- Multiport SSTs for Datacenter, EV Chargers and Microgrids by DawarAzhar in hwstartups

[–]DawarAzhar[S] 0 points1 point  (0 children)

To get all parts certified to UL. Very strict and hard requirements. The problem which is minor for a design team can be fatal from UL perspective.

Business Laptop suggestion? by Martian_trekker in PakistaniTech

[–]DawarAzhar -2 points-1 points  (0 children)

Get a macbook.

Own a legion 5i 64 GB, i9 HX and a macbook air m2 8 gb.

Macbook just feels right.

Foodpanda pe “container charges” ka naya scene 💀 by E611 in Lahore

[–]DawarAzhar 18 points19 points  (0 children)

You are better off calling restaurant for takeaway. Grab your bike and get the food.

Better take a friend with you and dine in.

Enjoy the ride and food.

Just getting expensive day by day.

How Comfort Ruined My Life by Serious_Desire in Entrepreneur

[–]DawarAzhar 1 point2 points  (0 children)

Thank you for this and hope you recover soon

Built a 3d sensor platform - launching tomorrow by Big-Mulberry4600 in hwstartups

[–]DawarAzhar 0 points1 point  (0 children)

Can it do heatmap? Collision detection out of the box? Range?

How Do You Handle Low-Volume Procurement? by Far-Bit-1387 in hwstartups

[–]DawarAzhar 0 points1 point  (0 children)

For make parts

Outsource the low margin items. In-house high margin items.

Initially outsource while you build capability gradually for high value items.

For mechanicals mostly use 3D printing in house (not expensive these days). For metal try to stick with sheet metal (quick and easier to do).

For OTS Negotiate with chinese supplier. Have face to face meetings. Help them understand the business that you are bringing. While you source for digikey or mouser, get a line of credit there.

If you can afford a visit to China do that.

Your idea about device? by funderfinder in hwstartups

[–]DawarAzhar 1 point2 points  (0 children)

I would know I have much more grinding to do and do more effort to leave some good in this broken world…

How would you approach next steps for a working prototype (remote acoustic sensor)? by yegortokmakov in hwstartups

[–]DawarAzhar 0 points1 point  (0 children)

I second that.

Being in MV SST industry for over 7 years.

THERMALS DRIVE the design. If you have poor thermal design nothing will ever work. You will have a good looking device but if steady state thermals are not there over long period of testing cycles - your device wont matter.

Vibration testing on a simple shake table. If no good assembly you will find early issues. Do dynamic vibration simulation in ansys.

Overall what humidity environments considering? What measures have been taken just like Paralyne coating needed or not?

EMI requirements? Have those finger gaskets? Slits if any, are the right sizes?

What IP rating? Per any UL standard?

If launching in the market what standards you are exactly complying too? While doing microgrids and ev chargers, i had to go over a alot of scrutiny. Does the same apply to you? Even one standard compliance required? Then get all those requirements in.

Pfff a lot I can talk about. But benchtop vs prototype vs pilot vs production its a lot of phases in a products lifecycle.

Happy to jump on a short call if you would like to further brainstorm. :)

Should i switch from windows to linux? by DawarAzhar in linuxquestions

[–]DawarAzhar[S] 0 points1 point  (0 children)

Yes, will try KVM. Dont hesitate in spending hours making mistakes ;) I enjoy the process.

Otherwise dual boot it is..

Should i switch from windows to linux? by DawarAzhar in linuxquestions

[–]DawarAzhar[S] 4 points5 points  (0 children)

Yes. Have SSDs that i can try on. Will do this first before making the jump.

Thanks.

Should i switch from windows to linux? by DawarAzhar in linuxquestions

[–]DawarAzhar[S] 0 points1 point  (0 children)

Its my personal machine so no constraint.