Chips

Owned by Titan Yuan
Last updated: Nov 16, 2020 by Austin Patel
3 min read

Spare dies: 224 in Swarm, 96 in Kris’s office (untested, dated 2018/07/11)

9 Q boards + 8 QX boards + 15 dev boards

Ahad tested 20 chips (results: https://tinyurl.com/finchworm):

Chip

Status

Owner

Chip

Status

Owner

1

Works perfectly (VDDD_LDO_OUTPUT increases to ~1.1V)

Fil (on SARA board)

2

Not programmable

Ahad

3

Works perfectly (VDDD_LDO_OUTPUT increases to ~1.1V)

Ahad

4

Not programmable

Ahad

5

Not programmable

Ahad

6

Programmable, draws VDDD_LDO_OUTPUT to ~1.3V and draws >1 mA of current even without the radio turned on

Ahad

7

Not programmable

Ahad

8

Works perfectly (VDDD_LDO_OUTPUT increases to ~1.1V)

Ahad

9

Programmable, draws VDDD_LDO_OUTPUT to ~1.3V and draws >1 mA of current even without the radio turned on

Alex (on SARA board)

10

Programmable, draws VDDD_LDO_OUTPUT to ~1.3V and draws >1 mA of current even without the radio turned on

Ahad

11

Not programmable

Ahad

12

Programmable, draws VDDD_LDO_OUTPUT to ~1.3V and draws >1 mA of current even without the radio turned on

Ahad

13

Not programmable

Ahad

14

Not programmable

Ahad

15

Not programmable

Ahad

16

Programmable, draws VDDD_LDO_OUTPUT to ~1.3V and draws >1 mA of current even without the radio turned on

Ahad

17

Not programmable

Ahad

18

Not programmable

Ahad

19

Programmable, draws VDDD_LDO_OUTPUT to ~1.3V and draws >1 mA of current even without the radio turned on

Ahad

20

Not programmable

Ahad

21 (1b)

Programmable, draws VDDD_LDO_OUTPUT to ~1.3V and draws >1 mA of current even without the radio turned on

Fil (on SARA board)

 

Ahad also used the NI Current DAQ to generate time-series current data for chips 21-40, found here: https://drive.google.com/open?id=1tEYlE4YMUUR62iSXECxSKdOlVVgLKy8X

Fil:

  • 2 additional chips on SARA boards:

    • 1 functional

    • 1 that works with VDD jumper workaround

Chip

Status

Owner

 

Chip

Status

Owner

 

R4

Alex board VDD tap cable doesn’t appear connected.
1. Boots with VDDD=1V and GPIOs are toggling.

2. Boots with VDDD=1V connected during programming (double boots when we kept VDDD connected). Once booted with VDDD connected and clocks calibrated, then we can remove VDDD and boot repeatedly.

3. UART I working

4. TX is working

Alex

 

R5

Did not boot with VDDD=1V but perhaps we could try different voltages in the future

Austin/Alex

 

R7

  1. Boots when tapped with VDDD=1V

2. Boots with VDDD=1V connected during programming (double boots when we kept VDDD connected). Once booted with VDDD connected and clocks calibrated, then we can remove VDDD and boot repeatedly. After removing VDDD. VDDD_LDO output=0.962V

3. UART is working!

4. Radio? not working atm but probably we need to add the SMA antenna.

 

I (Austin) added VDDD tap wire and the current went from 350uA to 250uA after programming (but before VDDD tapped Need to further investigate this)

Austin/Alex

 

R9

  1. Boots with VDDD=1V connected

  2. UART does not work. Board is not picked up by computer. it is likely we will need to replace UART.

  3. Radio TX is working. confirmed on OpenMote RX

  4. Double Boot is working when I changed the TX LC code range to 23 9 0-10

 

Austin

R13

didn’t work after 5 attempts

Austin/Alex

 

R14

didn’t work

Austin/Alex

 

R15

high leakage. 8-9mA of current draw. Likely connected VDDIO to VBAT/VDDD
1. Still boots with ALLGPIOToggle.bin

2. UART not really working. (garbled)

3. Radio looks like it’s transmitting but haven’t received packets. this board is hard to program overall

Austin/Alex

 

Q2

VBAT is not connected? get .047nA current

Austin/Alex

 

14 (yellow wire on it)

  1. Boots ALLGPIOToggle.

  2. UART doesnt seems to work.

Austin/Alex

 

Q6

Cold boot working radio!

Austin/Alex

 

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