X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=EasyMotor%2Findex.mdwn;h=b5fe25224234f758d495389eb97a56981794b6a5;hb=7d14e976aa12edeb169baa33a7b5658a304297aa;hp=7815bc7b486e3fc8d1948c45e9d184fb2175ade8;hpb=a116153f090e460e5b66366ab2fc18c0194fe2b4;p=web%2Faltusmetrum diff --git a/EasyMotor/index.mdwn b/EasyMotor/index.mdwn index 7815bc7..b5fe252 100644 --- a/EasyMotor/index.mdwn +++ b/EasyMotor/index.mdwn @@ -5,6 +5,14 @@ This board is designed for in-flight characterization of research rocket motors. It records chamber pressure and acceleration to an on-board flash memory chip, the contents of which can be downloaded after flight over USB. +EasyMotor version 3 is available from the +[Garbee and Garbee](https://shop.gag.com) web store +and from our distributors. + +For the latest EasyMotor firmware and related ground station software, +please visit the [AltOS](../AltOS) page on this site. EasyMotor +version 3.0 requires AltOS version 1.9.12 or later. + This is what a production v3 board looks like: @@ -24,29 +32,30 @@ This is what a production v3 board looks like: * Hardware Features * [NXP LPC11U14](http://www.nxp.com/products/microcontrollers/cortex_m0_m0/LPC11U14FHI33.html) System-on-Chip - * ARM Cortex-M0 MCU - * 32k Flash - * 6k RAM - * USB 2.0 - * 8 12-bit analog inputs - * I2C, SPI, async serial - * digital I/O + * ARM Cortex-M0 MCU + * 32k Flash + * 6k RAM + * USB 2.0 + * 8 12-bit analog inputs + * I2C, SPI, async serial + * digital I/O * Analog Devices [ADXL375](https://www.analog.com/en/products/adxl375.html) 3-Axis Digital MEMS Accelerometer - * +- 200g full-scale - * on-chip digitizer + * +- 200g full-scale + * on-chip digitizer * on-board USB-based charger for single-cell LiPo battery * low noise 5V switching regulator to power pressure sensor * precision divider with 0.1% resistors to scale pressure sensor analog output to match SOC analog input voltage range * Software Features - * Written mostly in C with some ARM assembler - * Runs from on-chip flash, uses on-chip RAM, stores flight data to serial flash - * USB serial emulation for "console" interface + * Written mostly in C with some ARM assembler + * Runs from on-chip flash, uses on-chip RAM, stores flight data to serial flash + * USB serial emulation for "console" interface * Tools Used * [lepton-eda](https://github.com/lepton-eda/lepton-eda) for schematic capture * [pcb-rnd](http://repo.hu/projects/pcb-rnd/) for PCB layout + * [GCC](http://gcc.gnu.org/) compiler and source debugger * Licenses * The hardware is licensed under the [TAPR](http://www.tapr.org) [Open Hardware License](http://www.tapr.org/ohl.html) @@ -104,6 +113,11 @@ gets fed through a vent hole in the airframe as a twist-n-tape power switch. +If machining closures isn't something you want to do, +[Loki Research](https://lokiresearch.com) now sells "experimental bulkheads" +for 54mm and 75mm snap-ring cases that are well suited for mounting a pressure +sensor to use with EasyMotor. + ## Artifacts ## Motor characterization products from Altus Metrum are documented in a manual