Difference between revisions of "Hacking hardware for chumby"
(→Power requirements) |
m (→Power requirements) |
||
| Line 24: | Line 24: | ||
=Power requirements= | =Power requirements= | ||
The chumby uses a very standard 2.1mm I.D. x 5.5mm O.D. x 9.5mm Female (P-5) barrel connector and runs off 1A at anywhere between 6.5 VDC and 14.5 VDC.<br> | The chumby uses a very standard 2.1mm I.D. x 5.5mm O.D. x 9.5mm Female (P-5) barrel connector and runs off 1A at anywhere between 6.5 VDC and 14.5 VDC.<br> | ||
| − | Each Chumby ships with a "wallwart" power supply with US-style prongs; however, it's easy to find a compatible power supply with other form factors. Search on "12 volt portable power" for | + | |
| − | If you purchase an additional power source, you will need to match the DC power jack on the Chumby. Radio Shack's part number #274-1569 works fine as a power connector, though a tiny bit longer than the plug that comes with the Chumby. Solder the hot side to the middle of the connector, and the ground shield to the sleeve of the connector.< | + | Each Chumby ships with a "wallwart" power supply with US-style prongs; however, it's easy to find a compatible power supply with other form factors. Search on "12 volt portable power" for some options. Make sure the power supply provides at least 1 amp (1,000 MA). If you supply less than 1 amp, you'll have an unhappy Chumby that won't display properly, and might make some funny noises! <br> |
| + | |||
| + | If you purchase an additional power source, you will need to match the DC power jack on the Chumby. Radio Shack's part number #274-1569 works fine as a power connector, though a tiny bit longer than the plug that comes with the Chumby. Solder the hot side to the middle of the connector, and the ground shield to the sleeve of the connector. <br> | ||
| + | |||
There is a 9 volt battery connector located in the base of the Chumby. This battery will power the unit for a short time during power outages. | There is a 9 volt battery connector located in the base of the Chumby. This battery will power the unit for a short time during power outages. | ||
Revision as of 22:59, 16 November 2007
Note - this page is for hacking of "Ironforge" production hardware.
For information about alpha prototypes, please see Hacking hardware for Foo/Katamari.
What questions do you have about hacking the hardware?
Please post questions here, and someone will attempt to create a sub-page to answer it! Or, check out the forum to see if your question has already been answered.
What's in a chumby?
- 350MHz Freescale iMX21 MC94MX21DVKN3 ARM9 controller Datasheet Technical Information
- Samsung 64MB SDRAM on 32-bit data path
- Hynix HY27US 64MB NAND Flash ROM
- Three USB 2.0 full speed ports, one internal, two external
- Xterasys 3135G 802.11g USB Wifi adapter (ralink chipset)
- DataImage 320hx240v TFT display with touchscreen
- Texas Instruments TSC2100 Programmable Touchscreen Controller with Stereo DAC Datasheet
- 2W stereo speakers, with headphone jack
- Built-in microphone
- "Bend" switch
- Kionix KXP74-1050 3-axis accelerometer Datasheet Specifications
- STMicroelectronics STR711FR0/1 ARM7 "crypto" processor Datasheet
- Soft-switch on power, controlled by crypto processor
- TTL serial port @38400 8N1
Power requirements
The chumby uses a very standard 2.1mm I.D. x 5.5mm O.D. x 9.5mm Female (P-5) barrel connector and runs off 1A at anywhere between 6.5 VDC and 14.5 VDC.
Each Chumby ships with a "wallwart" power supply with US-style prongs; however, it's easy to find a compatible power supply with other form factors. Search on "12 volt portable power" for some options. Make sure the power supply provides at least 1 amp (1,000 MA). If you supply less than 1 amp, you'll have an unhappy Chumby that won't display properly, and might make some funny noises!
If you purchase an additional power source, you will need to match the DC power jack on the Chumby. Radio Shack's part number #274-1569 works fine as a power connector, though a tiny bit longer than the plug that comes with the Chumby. Solder the hot side to the middle of the connector, and the ground shield to the sleeve of the connector.
There is a 9 volt battery connector located in the base of the Chumby. This battery will power the unit for a short time during power outages.
