Verification Team Meeting - December 4, 2015
Attended: May Chen, Kristie Lee, Jon Liang
Notes about Verification Board
- How to select an SD card reader?
- Will be connected from MCU → SD card w/ hub
- Uneven solder pad layout can be made uniform approximately, as long as contact is made
- Look at number of positions and match it with SD card being used
- Look at datasheet to see what each pin does
- Power, ground
- Data pins
- Receive, transmit, other communication
- Does it need supporting parts?
- Resistors, capacitors, clock?
- Software
- How does it communicate?
- What pin to connect on the MCU to SD card reader to store data, etc.
- Receive, transmit, gnd, pwr, other communication
- Leave unused pins open
- Programmer
- Ask Dragonfruit/Cranberry how their MCU gets programmed?
- We will use the same circuit and program it the same way b/c same MCU
- Ask Apple what is on the receiving end of the Arduino (silver usb programmer thing)
- Put that on our board
- Look at schematic/datasheet of Arduino to see how its usb programmer connects to the MCU
- Match the pins to our programmer
- Same programmer can be used to program apple and program our chip
- We’re basically making a “baby Arduino”
- Communication system
- VB send request to Apple
- Apple send request to sensors
- Then repeat backwards
- Atmega has back and forth communication with sd card, not one way
- Power system
- Use terminal block
- One to connect to power supply wires
- One to mount on our board
- Power with power supply, not battery b/c for bench testing
- Switch
- Ask Dragonfruit what kind switch they’re using
- Voltage regulator
- Need 5V and 3.3V?
- Cascading: pass through switch, connect highest voltage signals, then go down lower
- Eg. switch.. 10v reg… component that needs 10v… 5v reg… component that needs 5v… 3.3v reg… etc.
- How are we powering Apple?
Tasks
- Find parts for SD card reader, programmer, and switch
- Look at Arduino datasheet
- Talk to Apple, Cranberry, Dragonfruit about parts
Completed
- Poster ready to be reviewed by Kenny/Christie
Authors
Contributing authors:
Created by leekrist on 2015/12/05 05:31.