MEP EP#299: Operation Scope Creep
Oct 20, 2021•58 min•Ep. 299
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Episode description
MEP EP#299: Operation Scope Creep
8 Layer Design
-
- Stephen is working on a 12 pcb design
- 11 pcbs done 1 left
- 6 nets left to go out of 963
- How to attack an 8 layer design?
- Part placement
- Stackup prep
- Stephen is working on a 12 pcb design
Multi Gauge Progress / Prop_Fan
- Screen and navigation
- CFA635-TFK-KL
- Temperature
- LTC2983
- Thermistors
- 5V analog active sensors
- LTC2983
- Level shifter
- TXB0104DR
- Shift between the 3.3V MCU and the 5V LTC2986
- Power filtering
- Air Quality
- HPMA115C0-003
- PM2.5 Particle Sensor
- Sensirion SGP40
- VOC Sensor
- Sensirion SHTC3
- Temp and Humidity
- HPMA115C0-003
- Last thing to finish on the design is to choose how to protect the inputs on the LTC2983
- Demo boards only use in series 100 ohm resistors
Adventures in Plastic Injection Molding
- Stephen got the mold state side
- Second round of payment due
- Remember Duty/tax
- Did the first round of prototyping - looking to validate the mold with more precise control
- Material story
- Polyethylene
- Polypropylene
- Heat/Temperature/Pressure
- Material story
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