XO 1.5 A2 Tinderbox
From OLPC
This describes the power testing setup for early prototypes of the XO-1.5 motherboard.
[edit] Overview
As part of the software development and device testing process for the XO laptops, they are connected to a testbed (the Tinderbox) for exhaustive power measurement while running different software suites. This includes a networked multi-channel high-precision voltmeter, used to measure current draws around the system.
We currently have an XO 1.5 A2 prototype wired up for testing.
[edit] Particulars
This is the power distribution diagram for an XO 1.5 A2 prototype. It shows the different locations where we are measuring power consumptions (through current measurements). We also measure a couple of voltages (Vin and Vcore), as they vary over time and are needed to make power calculations.
A printable PDF version is also available.
A script is provided which reads the power consumption and offers a summary.
[edit] Results
Some results are in http://dev.laptop.org/~wad/xo1.5pwr/.
