CHUCK

The CHUCK is basically a Un*x computer with an ARM core. The OS is very similar to Android, but you can only access it through a shell.

It is also used on the Bebop drones. Recommended reading: Bebop Hacking guide (PDF).

Getting into the shell prompt

• turn Disco on On firmware > 1.7.0:
• double-press the power button; first press is blinks green, second it blinks purple-blue-purple-blue
• connect to Disco's wifi
• telnet to 192.168.41.1

Read on:

manipulating CHUCK firmware

Network ports

• 21
• 51
• 8888 ?

USB ports

The right USB-port supports OTG without issues.

left USB port does not seem to power devices - UNLESS you plug USB hub into it?

The USB-ports are Micro-USB AB; they are a tiny bit larger than micro B, because they are missing the chamfer. They are backwards compatible but feel less tight. This is especially a problem when flying with a Disco4g-modem connected.

Kristian @ slack:

it is part number 475890001 or 475891001 from molex (identical parts) https://www.molex.com/pdm_docs/sd/475890001_sd.pdf https://www.molex.com/pdm_docs/sd/475891001_sd.pdf

Boards

There are three circuit boards in the CHUCK:

Main board

Top view

Bottom view

Notable components

• Main CPU (U1): Parrot P7 custom chip with ARMv7 core
• Co-processor (U obscured): Parrot P7MU: Holds ADC, temperature sensor etc.
• RAM (U200): Nanya NT5CC128M16JR-DI 2Gbit DD3 DRAM
• Flash ROM (U obscured): Kioxia TC58BYG0S3HBAI6 1 Gbit SLC NAND memory
• Air speed sensor (U1003): TE MS4515DO pressure transducer
• Wifi chip (U700): Broadcom BCM43525 3x3 11ac Dual-band Radio

BLDC board

Top view

Bottom view

GPS board

Top view

The top of the GPS board is just the GPS antenna.

Bottom view