6 Results for "8-bit cpu"

21 Days - IoT Habit Forming Picture Frame
Project by Chris Gervang
Challenging myself to be healthier! Having fun while I'm at it!
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Figuring out why the CM4 wouldn't boot when attached to my board
Log from Put a Raspberry Pi CM4 into an original iPad
In my previous log entry, I had fried my CM4 by shorting 5V to 3.3V, so I had to order a replacement, which arrived last week. The next thing for me to test is whether I can boot the CM4 on my board, so I installed Raspberry Pi OS and set enable_uart=1...

Figuring out why the CM4 wouldn't boot when attached to my board
Log from [HDP 2022] Put an RPi CM4 into an original iPad
In my previous log entry, I had fried my CM4 by shorting 5V to 3.3V, so I had to order a replacement, which arrived last week. The next thing for me to test is whether I can boot the CM4 on my board, so I installed Raspberry Pi OS and set enable_uart=1...

Controlling the motors
Log from Reflecting the sun into your home
Okay, we've found a motor, and a step up converter to provide power to it. Now we need to control it.A linear motor has two terminals, + and -.If you apply a suitably high DC voltage between the two terminals, the motor will start rotating. + and - are...

Parallel Bus
Log from PewPew S2
The displays arrived a few days ago, but I really didn't have the energy to get them working until today. Yesterday I found my Universal Display Breakout Board™ and soldered the display to it. Today I connected a Feather RP2040 to it, and tried to get...

Lenovo Thinkpad Supervisor Password - Gotta have a goal if you want to learn something...
Log from Hacking a Supervisor Password - With a Beagle Bone
So far, I have only understood where some Lenovo Thinkpads store their passwords. They are located at 0x380 and 0x400. I interpret this as password and confirmation password. These are seven bytes plus one checksum byte. This is not a CRC. It's...