Inverter Power (4-pin standard Molex) - ATX pins 12, 16, 22:

LCD Power (3-pin JST) - ATX pins 10, 11, 21: Yellow: POWER_GOOD signal from power supply (active high).Raspberry Pi Power (mini-USB cable) - ATX pins 4, 5:Īrduino Power and POWER_GOOD (3-pin JST) - ATX pins 7, 8, 9: Note: Some of the pins on the iMac power supply do not match the function listed in the ATX spec - the differences are noted below. That is, pins 1-11 are on one side of the connector, and 12-22 are on the other side, where pin 12 is across from pin 1 and pin 11 is across from pin 22. The ATX pin numbers listed below assume a 22-pin connector. The iMac G5 uses an 'ATX-style' connector and pinout. They are not necessarily the colors that your power supply or ATX extension cable use. The wire colors listed below are specific to my cable harness, and can be used to trace the wires in the photo above. I created a wiring harness from the ATX extension cable using various connectors from my spare parts bin. There are multiple power supply connections needed inside the case. I used this cable - similar cables are available from other vendors. In addition, I used a separate breakout board for the power, ground, and VEDID (+5V from iMac power supply), and Hot Plug Detect circuitry.Īs mentioned in Kiwi's procedure, it is easiest to use an ATX extension cable so that you don't need to cut the original cable coming from the Apple power supply. HDMI ConversionĪdafruit has an HDMI breakout board which makes soldering the tiny LVDS video wires from the LCD much easier compared to the surface-mount connector in Kiwi's procedure. My project also has a simpler SMB implementation, and uses what I believe is an easier method of converting the LVDS wires to an HDMI connector. However, certain steps are changed to accommodate the Raspberry Pi vs.

The major parts of the conversion follow Kiwi's detailed procedure.

I decided to use a similar procedure to convert my iMac into a Raspberry Pi: the 'PiMac'. I came across this project by Kiwi, which converted an iMac G5 into a 'Hackintosh' by reusing the display and power supply and replacing the system board with an X86 motherboard. I had previously converted an old iMac G4 to a 1680x1050 DVI display using a procedure by Dremel Junkie, and was now looking to re-purpose my old iMac G5. I had an old iMac G5 in storage which, while obsolete, still had a nice 1680x1050 LCD display that I didn't want to throw away. The 'PiMac' - converting a 2005 iMac G5 into a Raspberry Pi desktop.

Repurpose power mac g5 case