EP#105: Community Dice
Jan 31, 2018•35 min•Ep. 105
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Episode description
- Stephen
- Community Dice
- What’s the highest frequency signal a home gamer can generate? (square and sin waves?)
- Parker
- New Engineering Article
- 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
- Arrows $30 FPGA Board
- Mouser now Authorized Distributor for Espressif
- MacroFab is Hiring!
- Apply here
Tags: electronics podcast, MacroFab, macrofab engineering podcast, MEP, MOSFET, Podcast, TinyFPGA
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