diff options
| author | Bdale Garbee <bdale@gag.com> | 2010-02-08 23:38:17 -0700 |
|---|---|---|
| committer | Bdale Garbee <bdale@gag.com> | 2010-02-08 23:38:17 -0700 |
| commit | 928921db217759a9479bf625f9f31a91f3f79f41 (patch) | |
| tree | 12eaa61d87fa2f4ed70314635a0122280e3567bc | |
| parent | 6d0c18a68b556d1d4664286ca5b1aa015d62e8c8 (diff) | |
document power supply requirements for v0.2
| -rw-r--r-- | TeleMetrum/index.mdwn | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/TeleMetrum/index.mdwn b/TeleMetrum/index.mdwn index 46f16f7..02fd7f4 100644 --- a/TeleMetrum/index.mdwn +++ b/TeleMetrum/index.mdwn @@ -118,6 +118,12 @@ necessary to support the companion board interface added in v0.2. place parts! Without an inspection microscope, loading and testing these boards might be impossible. +* The addition of on-board GPS in v0.2 means that the total power consumption + can exceed the rate at which we draw power from the USB interface, + particularly when the GPS is in cold start mode. This means a battery must + be attached during operation, and also that the battery will only charge + effectively from USB when the board is turned off. + * The v0.1 artwork had three issues, two of which required physical rework on each board. All of these issues were fixed in v0.2. |