Rotimatic

All your roti's are belong to teh hackz0R!

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ThanX Vinita for dropping a rabbit hole in the lab  ;+)

Original Teardown

https://wiki.recessim.com/view/Roti_making_robot_rotimatic

SPI dump

Initial attempt with chip in circuit, 3v3 power from Tigard, WP & HOLD tied together with 10k resistor and HOLD 10k to ground.

~/tigard/roti$ sudo flashrom -p ft2232_spi:type=2232H,port=B,divisor=4 --flash-name
flashrom is free software, get the source code at https://flashrom.org

Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
Found Eon flash chip "EN25QH64" (8192 kB, SPI) on ft2232_spi.
vendor="Eon" name="EN25QH64"

~/tigard/roti$ sudo flashrom -p ft2232_spi:type=2232H,port=B,divisor=4 --flash-size
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
Found Generic flash chip "unknown SPI chip (RDID)" (0 kB, SPI) on ft2232_spi.
===
This flash part has status NOT WORKING for operations: PROBE READ ERASE WRITE
This flash part has status UNTESTED for operations: WP
0

Same setup as above, no device detected initially. Pulled Chip Select high then low thru 10k resistor and then...

~/tigard/roti$ sudo flashrom -p ft2232_spi:type=2232H,port=B,divisor=4 -r roti-b
Found Eon flash chip "EN25QH64" (8192 kB, SPI) on ft2232_spi.
Block protection could not be disabled!
Reading flash... done.
Error: WIP bit after WRSR never cleared

Generated 8MB file, saved to disk.

Repair Budgeting

...and now for Round II

• $60 busted up broken up rotimatic
• $62 Kneading/Stirrer Cup†
• $60 Flour Container†
• $39 Water Container†
• $35 Oil Container†
• $45 Front Door†
• $37 Dough Tray†
• $52 Kicker Pad†
  • $390 Sub Total Machine & Parts
• $7.99 Disinfecting Wipes
• $3.49 Isopropyl Alcohol
• $3.99 Pack of Sharpies
• $13.99 Lube
• $20 gas to here and there
  • $439.46 Estimated Total ($1,599/$1,399 new/re-manufactured)†

† Parts priced from rotimatic.com