# TeleMetrum Units

This page contains Bdale's notes about each unit of [TeleMetrum](..) 
assembled to date.

## sn 1 ##

Full load of v0.1 PCB, two cuts and jumps to rewire P1_2 to be SPI memory 
chip select, R14 and R15 loaded with 56k, 10k tacked from each to 
ground.  R17 replaced with short circuit, R18 removed.

First unit to be flown on 19 April 2009 by Bdale Garbee.

## sn 2 ##

Full load of v0.1 PCB, two cuts and jumps to rewire P1_2 to be SPI memory 
chip select, R14 and R15 loaded with 56k, 10k tacked from each to 
ground.

Delivered to Keith Packard for firmware development and use.

## sn 3 ##

Full load of v0.1 PCB on 2009.04.22, two cuts and jumps to rewire P1_2 
to be SPI memory chip select, R14 and R15 loaded with 100k, 27k tacked 
from each to ground.

## sn 4 ##

Full load of v0.1 PCB on 2009.04.22, two cuts and jumps to rewire P1_2 
to be SPI memory chip select, R14 and R15 loaded with 100k, 27k tacked 
from each to ground.

## sn 5 ##

Partial "ground" load of v0.1 PCB on 2009.04.23 plus beeper and serial 
connector for use as TeleDongle or for TeleTerra prototype.

## sn 6 ##

Partial "ground" load of v0.1 PCB on 2009.04.23 for use as TeleDongle.