Difference between revisions of "Gps1"
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| + | {{ceb_prj}} | ||
| + | {{pf_top_nav}} | ||
| − | =power | + | = parts = |
| − | *3 to 4.2 LiPo (1.3 Ahr | + | *[[http://www.sparkfun.com/commerce/product_info.php?products_id=8975 GPS unit]] |
| − | + | *[[http://www.sparkfun.com/commerce/product_info.php?products_id=256 20x4 LCD]] | |
| + | *CPU dsPIC or MSP430? | ||
| + | |||
| + | =power management= | ||
| + | *3 to 4.2 LiPo (1.3 Ahr) - 26 hrs @ 50mA | ||
*Need upower LV cutoff. | *Need upower LV cutoff. | ||
==Battery charger== | ==Battery charger== | ||
| − | *LT3650-8.2 [[http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1037,C1078,P87784]] | + | *LIPO : LT3650-8.2 [[http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1037,C1078,P87784]] |
| + | *NiMh | ||
| + | * NImi - charge at upto 1C | ||
| + | ** charge voltage of 1.4-1.6V / cell, fully charged cell of 1.35 to 1.4, discharged at 1.0 to 1.1 V / cell | ||
| + | **, need to watch for cell reversal and over discharge. indefinite charge at C/300, but a C/10 charge can be used for limited time. [[http://en.wikipedia.org/wiki/Nickel-metal_hydride_battery#Charging]] | ||
| + | ** probably can just use a CV charger and use the CPU to monitor cell voltage. Will use USB to make it easy. | ||
| + | ** LT3684 36V 2A 2.8 MHz buck : [[http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1042,P37361]] | ||
==LCD display== | ==LCD display== | ||
* 5V @ 1.5mA | * 5V @ 1.5mA | ||
| − | * TPS61220 boost converter - very efficient at lite load | + | * [[http://focus.ti.com/lit/ds/symlink/tps61220.pdf TPS61220]] boost converter - very efficient at lite load |
==LCD back light== | ==LCD back light== | ||
| − | *3.8 - 4.2V @ 240mA max | + | *3.8 - 4.2V @ 240mA max, |
*LTC3454 - LED driver. | *LTC3454 - LED driver. | ||
| − | == | + | ==dsPICsupply== |
| − | * 3.0V @ upto 100mA | + | |
| − | *TPS63030 (buck - boost) | + | * 3.0V @ upto 100mA GPS |
| + | *TPS63030 (buck - boost) [[http://focus.ti.com/lit/ds/symlink/tps63030.pdf tps63030]] | ||
| + | |||
| + | == GPS== | ||
| + | *direct to LiPo, | ||
| + | *or through LDO - TPS780xx Iq=500nA, 150mA output. | ||
| + | *TPS735xx 25mW @ 50mA, 500mA max, IQ 46uA | ||
| + | *TPS734xx 25mV @ 50mA, 250mA IQ 44ua | ||
| + | *TPS799xx 25mV @ 50mA, 200mA, 40uA | ||
| + | |||
| + | * LOCOSYS LS20031/33 - direct Lipo connections! (41/44 mA) | ||
| + | |||
| + | ==single cell solution== | ||
| + | *[[http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1042,P1901 LTC3402]] | ||
| + | *[[http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1042,P14933 LTC3422] | ||
| + | *[[http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1042,P1250 LTC3424]] | ||
| + | *[[http://focus.ti.com/docs/prod/folders/print/tps61070.html TPS61070]] Vin=1v, Iout @ 3.3V = 90mA | ||
| + | |||
| + | |||
| + | ==batteries== | ||
| + | [[http://www.thomasdistributing.com/shop/-nimh-rechargeable--aa-nimh-batteries-c-122_104_106.html?osCsid=tc7l48ef19od61gq709eruv2o2]] | ||
Latest revision as of 02:43, 7 August 2009
- garden12 ; emg_2009 ; Enc_2010 ; AKENC ; Kknee1 ; Br46_v1 gps1 ; lifefix ; battery ; loadwasher ; elecdog ; Brushless_control ; ceb_misc_prj ; pf_top_nav ; T
PF Users Navigation:
- PCB; Lifefix_users; Pf_users; benchtest_users; CalibFix Users; Hardware; Assembly ; iochan ;
- PCA : PCB ; AKENC SC/MC 218 ; FET 217 ; IMU219 ; Swifi ; Rev200_mods ; PCA Inventory
- Special Commands to the Ankle (PFCMD) : State Controller Commands; Motor Controller Commands; Python Examples; IMU Commands ;PFCMD_PY; Pf_calb_table_py; Virtual spring test; PF EEPROM
- DOC: Pf_users; Powerfoot Keyboard User Interface; Steps for Manual Tuning; "Dashboard" Program For Assisting with Tuning
- NEW (CEB) WIKI
- Torque Feedback Controller Guide
Contents
parts
power management
- 3 to 4.2 LiPo (1.3 Ahr) - 26 hrs @ 50mA
- Need upower LV cutoff.
Battery charger
- LIPO : LT3650-8.2 [[1]]
- NiMh
- NImi - charge at upto 1C
- charge voltage of 1.4-1.6V / cell, fully charged cell of 1.35 to 1.4, discharged at 1.0 to 1.1 V / cell
- , need to watch for cell reversal and over discharge. indefinite charge at C/300, but a C/10 charge can be used for limited time. [[2]]
- probably can just use a CV charger and use the CPU to monitor cell voltage. Will use USB to make it easy.
- LT3684 36V 2A 2.8 MHz buck : [[3]]
LCD display
- 5V @ 1.5mA
- [TPS61220] boost converter - very efficient at lite load
LCD back light
- 3.8 - 4.2V @ 240mA max,
- LTC3454 - LED driver.
dsPICsupply
- 3.0V @ upto 100mA GPS
- TPS63030 (buck - boost) [tps63030]
GPS
- direct to LiPo,
- or through LDO - TPS780xx Iq=500nA, 150mA output.
- TPS735xx 25mW @ 50mA, 500mA max, IQ 46uA
- TPS734xx 25mV @ 50mA, 250mA IQ 44ua
- TPS799xx 25mV @ 50mA, 200mA, 40uA
- LOCOSYS LS20031/33 - direct Lipo connections! (41/44 mA)
single cell solution
batteries
[[4]]
