Altus Metrum Units Constructed

This page contains Bdale's notes about each unit of TeleMetrum and TeleDongle 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.

Installed in Bdale's Vertical Assault. First unit to be flown on 2009.04.19, on a Cesaroni J335.

Successfully flew Bdale's rebuilt Horizon dual-deploy at Hudson Ranch on 2009.07.18 with a MAWD as backup. The first dual-deploy flight with a TM board in control of ejection charges!

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. Flown twice on 10 May 2008 in Keith's Grappler to about 45m on Estes D12-3 motors.

Flew in Keith's Little Dog Dual Deploy at Mile High Mayhem as a payload. The ascent was pretty but the rocket failed to deploy and lawn-darted. The battery and screw terminal block connectors got more or less torn off, but the rest of the board survived and good data was recovered from the flight.

Repaired by Bdale, sent back to Keith on 7 July 2009. Keith reported the baro sensor as flakey, it was replaced in October 2009 prior to NCR Octoberfest.

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.

Installed in Bdale's Vertical Assault after sn 1 moved to Horizon, but never flown there.

Pulled and given to Keith to take home from Mayhem.

Lost in Keith's Nike which was lost for a while after an apparently nominal flight in June 2009 at Brothers, Oregon. Rocket was later found and this unit is reportedly still in good condition.

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.

Installed in Robert's Lil Nuke.

Lost at Hudson Ranch 2009.07.18 when we forgot to tape the nose cone on and both it and the electronics sled came out at apogee and were not recovered.

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.

Bdale's TeleDongle.

Keith added acrylic LED light pipes and a LiPo for use in RDF after flight.

sn 6

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

Keith's TeleDongle.

Keith added acrylic LED light pipes and a LiPo for use in RDF after flight.

sn 7

Full load of v0.1 PCB on 2009.08.08, 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.

Pulled from Vertical Assault (never flew there) and taken to Keith in Japan in October 2009 as replacement.

sn 8

Full load of v0.1 PCB on 2009.08.08, 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.

Delivered to Keith in early November 2009.

sn 9

Full load of v0.1 PCB on 2009.08.15, 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.

Installed in Bdale's Trick-o-Treat 98mm airframe.

sn 10

Full load of v0.1 PCB on 2009.08.15, 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.

Installed in Robert's Lil Nuke.

sn 11

Full load of v0.1 PCB on 2009.08.15, 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. Accelerometer loaded is MMA2204EG 100G unit!

In G-Spot, this accelerometer recorded 52.8 gee acceleration on a Cesaroni pro29 H399 reload at NCR Oktoberfest 2009!

Beeper failed after a hard landing, replaced 2010.02.06.

sn 12

Full load of v0.1 PCB on 2009.11.05, 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. Accelerometer loaded is MMA2204EG 100G unit!

sn 13

Full load of v0.1 PCB on 2009.11.05, 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.

Modified 2009.11.20 to:

  • use TC1055-3.3VCT713 100ma regulator proposed for v0.2
  • route 3.3V instead of v_lipo to the serial connector for SkyTraq GPS
  • use v_lipo for pyro voltage instead of 5V with 1000uF capacitor
  • added 100uF 1206 capacitor on 3.3V rail

In this configuration, flew two textbook perfect flights on 2009.11.21 at Hudson Ranch in Trick-O-Treat on J motors.

Modified 2011.11.13 to:

  • test ADXL78 accelerometer functionality for v1.2 build
  • use 3.3k instead of 10k for R2 and R3, to eliminate power-on pyro glitching

sn 14

Full load of v0.1 PCB on 2009.11.05, 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.

Modified 2010.10.18:

  • R10 changed to 27k to allow keithp to test use of 1.25V ADC internal reference with the accelerometer

Delivered to keithp on 2010.10.19.

Modifed by keithp on 2011.03.30 to have 3.3V on the serial connector power pin.

sn 15

Partial "ground" load of v0.1 PCB on 2009.11.18 for use as TeleDongle.

sn 16

Partial "ground" load of v0.1 PCB on 2009.11.18 for use as TeleDongle.

sn 17-21

Full load of TeleMini v0.1 PCBs on 2011.03.07. Minor variations due to parts availability, as follows:

  • sn 17-18 have TXC oscillators, sn 19-21 have Abracom
  • sn 21 is missing the dual LED

sn 25-26

Full load of TeleTerra v0.1 PCBs on 2010.10.31

sn 27-31

Full load of TeleNano v0.1 PCBs on 201103.09. sn 27 has TXC oscillator, all others have Abracom, no other significant variations.

sn 32-33

Full load of TeleMini v0.2 PCBs on 2011.05.04.

sn 34-36

Full load of TeleScience v0.1 PCBs on 2011.05.05.

sn 37-38

Full load of TeleBT v0.1 PCBs on 2011.05.06.

sn 39-42

Full load of TelePyro v0.1 PCBs on 2011.09.20, except only sn 39 and 40 have magnetic sensors since I only have two samples of the now-obsolete part.

sn 43-45

Full load of TeleScience v0.1 PCBs on 2011.09.22.

sn 46-48

Full load of TeleTerra v0.2 PCBs on 2011.10.23.

sn 49-50

Full load of TeleShield v0.1 PCBs on 2012.01.03, using 3.15V reset controller and the less-good crystals.

sn 51

Full load of TeleMetrum v0.2 PCB on 2010.01.09, with 100g accel and screw terminals.

Installed in G-Spot on 2010.02.06.

sn 52

Full load of TeleMetrum v0.2 PCB on 2010.01.09, with 50g accel and Tyco header.

Went home with Keith from LCA 2010 in Wellington.

sn 53

Full load of TeleMetrum v0.2 PCB on 2010.01.09, with 40g accel and screw terminals.

sn 54-56

Prototypes of TeleMetrum v1.1 loaded with the newer Venus 638 chips for evalutation, loaded as part of the production v1.1 run by Advanced Circuits, received 2011.01.06.

sn 57-60

Full load of TeleBT v0.2 PCBs on 2012.01.07.

sn 61-63

Full load of TeleShield v0.1 PCBs on 2012.01.13.

sn 64-65

MegaMetrum v0.1 PCBs on 2012.03.31, with 2 megabyte flash parts and no high-g accel.

sn 66

TeleFire v0.1 PCB built by Keith on 2012.08.23.

sn 67

TeleLCO v0.1 PCB built by Keith on 2012.08.26.

sn 68-70

MegaMetrum v0.1 PCBs on 2012.08.28.

sn 71-73

TeleBT v0.3 2012.12.19.

sn 74-76

MegaDongle v0.2 2012.12.27.

sn 77-79

TeleScience v0.2 2013.01.12.

sn 80-82

TeleGPS v0.1 2013.03.20

sn 83-85

TeleMega v0.3 2013.05.07. sn 85 has cc1125, the others have cc1120.

sn 86-88

EasyMini v0.1 2013.05.19.

sn 89-91

TeleMini v1.1 2013.05.22.

sn 92-93

TeleMetrum v1.9 2013.08.27

sn 94-95

TeleMega v0.4 P 2013.08.28

sn 96

TeleMini v1.1 2013.08.25. From Phoenix panel.

sn 97-98

TeleMini v1.1 2013.09.15. From Phoenix panel.

sn 100-207

First production run of 108 pieces of TeleDongle v0.2 by Advanced Circuits, received 2010.02.25.

sn 208-261

First production run of 54 pieces of TeleMetrum v1.0 by Advanced Circuits, received 2010.04.08.

sn 262-366

Production run of 105 pieces of TeleMetrum v1.1 by Advanced Circuits, received 2011.01.06.

sn 367-690

Production run of 324 pieces of TeleDongle v0.2 by Advanced Circuits, received 2011.03.21.

sn 691-834

Production run of 144 pieces of TeleMini v1.0 by Advanced Circuits, received 2011.07.25.

sn 835-941

Production run of 107 pieces of TeleMetrum v1.2 by Advanced Circuits, received 2011.12.15.

sn 942-1049

Production run of 108 pieces of TeleMetrum v1.2b by Advanced Circuits, received 2012.10.29.

sn 1050-1169

Production run of 120 pieces of TeleBT v1.0 by Advanced Circuits, received 2013.04.08. All above approximately sn 1050 were lost in the fire.

sn 1070-1189

Production run of 120 pieces of TeleBT v1.1 by Advanced Circuits, received 2013.08.22.

sn 1190-1213

Production run of 24 pieces of EasyMini v1.0 by keithp. Build started 2013.10.05

sn 1214-1263

Production run of 50 pieces of TeleMega v1.0 by Advanced Circuits, received 2013.12.09.

sn 99

TeleMini v1.1 from phoenix panel

sn 1264-1269

Production run of 6 EasyMini v1.0 by keithp

sn 1270-1377

Production run of 108 pieces of TeleMetrum v2.0 by Advanced Circuits, received 2014.01.24.

sn 1378-1593

Production run of 216 pieces of TeleDongle v0.2b byy Advanced Circuits, received 2014.01.27.

sn 1594-1602

Production run of 9 EasyMini v1.0 by keithp 2014.01.30

sn 1603-1611

Production run of 9 EasyMini v1.0 by keithp. 2014.02.04

sn 1612-1661

Production run of 50 pieces of TeleMega v1.0 by Advanced Circuits, received 2014.01.13.

sn 1662-1664

Prototype build of 3 TeleGPS v0.3 by Bdale 2014.03.11.

sn 1665-1864

Production run of 200 pieces of EasyMini v1.0 by Advanced Circuits, received 2014.04.02.