EP#105: Community Dice

Stephen
- Community Dice
- What’s the highest frequency signal a home gamer can generate? (square and sin waves?)
Parker
- New Engineering Article
  - 3 Steps to Planning Parts Selection for Your Next Electronic Hardware Product
- Raspberry Pi Compute Module Motherboard
  - Continuation from the Compute Module board from last year
  - Added the PCM5122 audio DAC
  - Learning about USB HUB design
    - TUSB2046B
    - TPS2044 for overcurrent protection
      - Only rated for 500mA
    - USB spec says only 120uF cap per hub required but 100uF per port is recommended with low ESR
    - USB DM/DP signals require around 27 ohm termination resistors
    - Optional filter of 22pF recommended for EMI suppression
    - This creates a “low pass” filter with a cut off of 267.9 MHz
      - 12M bit/sec full Speed USB 12MHz, well under this cut off
Rapid Fire Opinion (R.F.O.)
- Mouser now Authorized Distributor for Espressif
  - They make the ESP8266 Wifi stuff
- FPGA Dev boards
  - Arrows $30 FPGA Board
    - Altera MAX 10
    - Built in USB programming
  - TinyFPGA Lattice
    - $12 but requires a $9 programmer
MacroFab is Hiring!
- Apply here

Tags: electronics podcast, MacroFab, macrofab engineering podcast, MEP, MOSFET, Podcast, TinyFPGA

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