• Share
  • Email
  • Embed
  • Like
  • Save
  • Private Content
Technical Machine's Hardware Playbook
 

Technical Machine's Hardware Playbook

on

  • 837 views

Technical Machine's approach to manufacturing. Learn more at http://tessel.io

Technical Machine's approach to manufacturing. Learn more at http://tessel.io
Video of the talk: https://www.youtube.com/watch?v=0ZArxLefleg

Statistics

Views

Total Views
837
Views on SlideShare
837
Embed Views
0

Actions

Likes
4
Downloads
20
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as Adobe PDF

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel

Technical Machine's Hardware Playbook Technical Machine's Hardware Playbook Presentation Transcript

  • Technical Machine’s Hardware Playbook @jia | Jia Huang | co-founder & developer
  • Tessel is a WiFi-enabled microcontroller that runs JavaScript.
  • 15 electrical designs, $250k preorders
  • 2 manufacturers2 manufacturing locations MA, USA ● makes Tessel ● we manage most of the supply chain ShenZhen, China ● 14 modules ● higher overall volume
  • Tessel Timeline June July September December 2013 2014 Work on Tessel starts Work on 14 modules start Tessel is “minimally functional”. Launched Crowdfunding campaign. Majority of products are pushed into production. A few are held back pending firmware changes.
  • Tessel Timeline June July September December 2013 2014 Work on Tessel starts Work on 14 modules start Tessel is “minimally functional”. Launched Crowdfunding campaign. Majority of products are pushed into production. A few are held back pending firmware changes. } 6 months
  • Tessel Timeline June July September December 2013 2014 Work on Tessel starts Work on 14 modules start Tessel is “minimally functional”. Launched Crowdfunding campaign. Majority of products are pushed into production. A few are held back pending firmware changes. } 6 months 15 designs
  • Tessel Timeline June July September December 2013 2014 Work on Tessel starts Work on 14 modules start Tessel is “minimally functional”. Launched Crowdfunding campaign. Majority of products are pushed into production. A few are held back pending firmware changes. } 6 months 15 designs 1.5Hardware Engineers( )
  • Tessel Timeline June July September December 2013 2014 Work on Tessel starts Work on 14 modules start Tessel is “minimally functional”. Launched Crowdfunding campaign. Majority of products are pushed into production. A few are held back pending firmware changes. } 2.5 designs/month
  • This is how we do it.
  • Production TimelineProduction Timeline Engineering Design TestPrototype Test Rig Test Plan Supply Chain Sourcing Check volumes Place order Re-source Look into manufacturers Selection Pre-production ProductionDFM Manufacturing
  • Engineering
  • Design / Prototype / Test First pass (~10 days) 1-3 days design 3 days PCB turn 1 day build 2-3 days test design review
  • Design / Prototype / Test First pass (~10 days) 1-3 days design 3 days PCB turn 1 day build 2-3 days test design review 7 days write test code
  • Design / Prototype / Test First pass (~10 days) 1-3 days design 3 days PCB turn 1 day build 2-3 days test design review 7 days write test code Subsequent passes (~5 days) 1 day redesign 3 days PCB turn 1 day build/test design review
  • Prototype Manufacturers AP Circuits Alberta, Canada 3 day turns $10/sq inch KL, Malaysia 1.5 week turns ~$70+ ShenZhen, China 2.5 week turns $10/ 40 sq inches KL, Malaysia PCBA 3 week turns ~$300+ setup, $8/sq inch
  • Test Rigs Tessel tests Tessel Tessel tests modules
  • Test Plans
  • Test Plans ● Revision #s and dates
  • Test Plans ● Revision #s and dates ● contact info
  • Test Plans ● Revision #s and dates ● contact info ● Don’t assume English proficiency
  • Test Plans ● Revision #s and dates ● contact info ● Don’t assume English proficiency ● Have redundancy among test rigs
  • Test Plans ● Revision #s and dates ● contact info ● Don’t assume English proficiency ● Have redundancy among test rigs ● images
  • Test Plans ● Revision #s and dates ● contact info ● Don’t assume English proficiency ● Have redundancy among test rigs ● images ● setup info
  • Test Plans ● Revision #s and dates ● contact info ● Don’t assume English proficiency ● Have redundancy among test rigs ● images ● setup info ● clear indicator of pass/fail
  • Supply Chain
  • Sourcing
  • Sourcing
  • Sourcing Online prices are fake. Find an inside sales guy.
  • Part Swaps Manufacturer should recommend swaps.
  • Part Swaps ● Things that are stupidly expensive but shouldn’t be ○ connectors ○ crystal oscillators ○ buttons ○ anything that is a passive component Manufacturer should recommend swaps.
  • Double checking Make sure there is enough supply 10k supply, 26 week lead time and someone else buys them out 1 month before production starts?
  • Double checking Make sure there is enough supply 10k supply, 26 week lead time and someone else buys them out 1 month before production starts? 1. Cry
  • Double checking Make sure there is enough supply 10k supply, 26 week lead time and someone else buys them out 1 month before production starts? 1. Cry 2. Find a drop in replacement
  • Double checking Make sure there is enough supply 10k supply, 26 week lead time and someone else buys them out 1 month before production starts? 1. Cry 2. Find a drop in replacement 3. There are none?
  • Double checking Make sure there is enough supply 10k supply, 26 week lead time and someone else buys them out 1 month before production starts? 1. Cry 2. Find a drop in replacement 3. There are none? 4. Do a redesign through the tears.
  • Double checking Make sure there is enough supply 10k supply, 26 week lead time and someone else buys them out 1 month before production starts? 1. Cry 2. Find a drop in replacement 3. There are none? 4. Do a redesign through the tears. Check errata documents ● Manufacturer only tests 1 axis of an accelerometer during production?
  • Double checking Make sure there is enough supply 10k supply, 26 week lead time and someone else buys them out 1 month before production starts? 1. Cry 2. Find a drop in replacement 3. There are none? 4. Do a redesign through the tears. Check errata documents ● Manufacturer only tests 1 axis of an accelerometer during production? ● Parameters said 2 USB ports on MCU but only 1 is functional.
  • Manufacturing
  • Getting a manufacturer 1. What kind of volumes? ○ <1k ○ <10k (Both China and America support these volumes)
  • Getting a manufacturer 1. What kind of volumes? ○ <1k ○ <10k 2. Send in Gerbers & Bom for quotation. ○ Get a price breakdown (Both China and America support these volumes)
  • Getting a manufacturer 1. What kind of volumes? ○ <1k ○ <10k 2. Send in Gerbers & Bom for quotation. ○ Get a price breakdown 3. Questions to ask ○ What’s their typical client volume? (Both China and America support these volumes)
  • Getting a manufacturer 1. What kind of volumes? ○ <1k ○ <10k 2. Send in Gerbers & Bom for quotation. ○ Get a price breakdown 3. Questions to ask ○ What’s their typical client volume? ○ Do you need special testing? FCC? (Both China and America support these volumes)
  • Getting a manufacturer 1. What kind of volumes? ○ <1k ○ <10k 2. Send in Gerbers & Bom for quotation. ○ Get a price breakdown 3. Questions to ask ○ What’s their typical client volume? ○ Do you need special testing? FCC? ○ Do they use 3rd parties? (Both China and America support these volumes)
  • Getting a manufacturer 1. What kind of volumes? ○ <1k ○ <10k 2. Send in Gerbers & Bom for quotation. ○ Get a price breakdown 3. Questions to ask ○ What’s their typical client volume? ○ Do you need special testing? FCC? ○ Do they use 3rd parties? ○ If something goes wrong, who are you going to be interfacing with? (Both China and America support these volumes)
  • China vs America Costs (sample size ~10 manufacturers) China Chinese with American office American American with Chinese office
  • China vs America Costs (sample size ~10 manufacturers) China Chinese with American office American American with Chinese office China ● Really good at part swaps / DFM America ● Really good at English
  • Pre-production ● Quality ● Communication ● Test Process Do a pre-production run. (10+ units)
  • Production Put out fires.
  • Production Put out fires. Pray.
  • YMMV. https://tessel.io jia@technical.io @technicalhumans