| Hi Paul,
Welcome. Wow, a welcome addition if you can work on new designs. I have someone I work with who offered to work on designs (4+ layers with higher desity...think inside a cell phone type work..that's what he does). Unfortunately he was too busy or just a flake but when I pressed him to actually do it he became scarce.
I can speak to "popular" and issues/question I see posted.
1. "popular" is simply more about "new" and "available". TWOG is new so it's most "popular" right now. Before that was Tiny so it was "popular" before TWOG. Yes, both designs broke from the tradition of making the design in an easily obtained CAD (Eagle) and used an expensive and not easy to get Protel version. Not sure if it's even possible to get that version of Protel any longer.
2. issues are EFI mostly and power. Power for the servos and modems and sensors. The 3.3v bus is critical as the LPC is powered off it. The 5v is for servos and other general power needs (i.e. sensors etc.).
Well, Tiny2.11 best I can tell was designed to be easier to FAB and assemble and at the same time provide more power (fundamentally). At the expense of EFI considerations. However, to FAB 4+ layers and assemble 402 sized components is not an issue for me.
So selfishly I am interested most in getting that 4-layer Tiny2.11 going. It's in the in_progress under tiny4l_18_1_99 I think that would be extremely popular. It seems to have the best features of the Tiny2.11 and address the EFI issue. Maybe going to 402 might help reduce size/weight as well.
The Wiki has a "wish list" for hardware. Take a review of this:
Also the IMU in the in_progress (imu_3j) is not tested and maybe obsolete. The 4-layer boards for all of it add up quickly when you quote having them fabricated. You can buy for roughly the same cost now 6DOF IMU from either Sparkfun or other sources now. If you could make it a 2 layer for the daughter cards and 4-layer for the main board that would help a lot with costs to FAB the PCB (that's what stopped me from having them made). Also according to Prof. Warmers the design is not tested. It should work but I don't believe anyone has ever had the PCB FAB and assembled one.
I am only speaking from my own experiences. I'm sure others will jump in (and hope they do). Can you also keep with the Eagle CAD design? It's a real pain for me not having protel and not being able to create my own Gerber files for the Tiny2.11 and TWOG along with the new IR sensors. When I go to have them FAB and assembled it seems there are things missing from the provided gerbers for those (such as data required for the pick-and-place programming).
Again, welcome, that's great you are offering to help with the designs.
-David Conger
On Dec 3, 2008, at 4:55 PM, Paul Cox wrote: Hi,
I'm getting started with paparazzi by building the necessary hardware. I see the wiki has some zip files of gerbers and design files, but since my goal is to one day work on the design I'm looking at CVS instead. Looking through the "hw" directory in CVS is a little overwhelming so as a first step I'd like to understand what all is there and in what condition it is in (i.e. flag anything obsolete, outdated, abandoned, etc). I'm listing all sch/brd files I see in the hw directory along with some notes. Please feel free to add whatever notes or info you may have and I'll be glad to collect the info and place back into READMEs or wiki:
Mo/Yr | File | Notes
0707 antenna/ant_2G45_air.brd - Some sort of 2.4GHz antenna maybe?
1007 controller/classix.sch & .brd - dual ARM board with Gumstix connector
0806 controller/tiny_0_99.sch & .brd - old tiny versrion (kept for reference?)
1006 controller/tiny13_1_1.sch & .brd - old tiny versrion (kept for reference?)
0606 controller/tiny_proto.sch & .brd - old tiny versrion (kept for reference?)
1006 controller/TODO_classix TODO_tiny TODO_tiny13 - revision history without much info on dates and rev numbers
1106 in_progress/4P_sarantel_test.sch & .brd - gps board (not placed or routed)
1207 in_progress/adxrs300_breakout.sch & .brd - gyro breakout board
0907 in_progress/AMI_601.sch & .brd - 1.8V reg and an I2C device? (servoflo doesn't seem to show they make accelerometers anymore?)
0706 in_progress/ant_2_4.sch & .brd -
0707 in_progress/ant_868(_2, _3).sch & .brd
0207 in_progress/ant_track_2.sch & .brd - Some sort of "antenna tracker": Micro, FTDI USB, SPI magnetometer, motor drivers
0306 in_progress/blmc.sch & .brd - BLDC motor controller using Atmel AT90S2313S, LM339, BC847, SI4420N/4425P (incomplete routing)
0306 in_progress/blmc_konze.sch & .brd - BLDC motor controller using Atmel AT90S2313S, LM339, BC847, SI4420N/4425P (incomplete routing)
0607 in_progress/blmc_laurent.sch & .brd - BLDC motor controller using Atmel ATMEGA128-A, LM317, FTDI/USB, BC847, FETs?
0306 in_progress/blmc_m8.sch & .brd - BLMC using Mega8 (incomplete layout)
0406 in_progress/blmc_m8_dev.sch & .brd - BLMC using Mega8
0406 in_progress/blmc_quad.sch & .brd - junk (looks like someone started something and gave up)
0208 in_progress/booz_gps.sch & .brd - GPS, antenna, and 3.3V regulator
1107 in_progress/boozrotor_v1.2.sch & .brd - LPC4148?, regs, SD socket (layout not quite complete)
0107 in_progress/current_probe.sch & .brd - AD8552 op-amp (somehow used to measure current?)
1106 in_progress/dc_controller_1.sch & .brd - MEGA8-based mot. cont. with CC (constant current?) motor driver IC
1106 in_progress/dc_controller_2.sch & .brd - (layout incomplete)
1206 in_progress/dc_controller_3.sch & .brd - MEGA8-based mot. cont. (looks to be layed out for attachement direct to small brushed DC motor)
1106 in_progress/g47_ctl.sch & .brd - LPC2148 and XBee (layout incomplete)
0706 in_progress/gorrazoptere_v1.sch & .brd - mega128 for Fly by wire, LPC2148 for Autopilot, XBee, gumstix connector, USB Hub? (layout incomplete)
0706 in_progress/gorrazoptere_v0_9x.sch & .brd - mega128, BLMC, modem
0306 in_progress/imu_2_xy.sch & .brd - LPC2148 & gyro (layout incomplete)
0907 in_progress/imu_3j_xy.sch & .brd - LPC2148, gyro, accelerometers, SPI magnetometer and ADC (JTAG connector!)
0907 in_progress/imu_3j_xz.sch & .brd - gyro board for above
0907 in_progress/imu_3j_yz.sch & .brd - gyro board for above
1206 in_progress/imu_interface.sch & .brd little pcb with 6v regulator and USB connector
1105 in_progress/imu_xy.sch & .brd - dual LPC2148, gumstix connector, gyro, accelerometers, magnetometers, regulators (layout incomplete)
1105 in_progress/imu_xz.sch & .brd - gyro board for above
1105 in_progress/imu_yz.sch & .brd - gyro board for above
0506 in_progress/ir_gyro.sch & .brd - IR sensors, gyros, and accelerometers with 3.3V reg. (layout incomplete)
0606 in_progress/ir_imu.sch & .brd - IR sensors, gyros, and accelerometers with 3.3V reg. (layout incomplete)
0606 in_progress/ir_imu_v.sch & .brd - IR sensors, gyros, and accelerometers with 3.3V reg. (layout incomplete)
0907 in_progress/ir_single_long.sch & .brd - Single axis IR board
0307 in_progress/ir_single_slim.sch & .brd - Single axis vertical IR board
0307 in_progress/LEA_18_1.sch & .brd - GPS board (layout incomplete)
0506 in_progress/lipo_connector.sch & .brd - tiny little PCB
1106 in_progress/motor_bench_1.sch & .brd - MEGA128, Gyros, XBee, magnetometers (layout incomplete)
0307 in_progress/motor_bench_lpc.sch & .brd - connector board with USB con and brushed motor driver
0907 in_progress/motor_bench_lpc_v1.1.sch & .brd - connector board with regulators
0207 in_progress/olimex_add_on.sch & .brd - (layout incomplete)
0207 in_progress/pth_supply.sch & .brd - 5V reg
1007 in_progress/pth_supply_servos_molex.sch & .brd - 5V reg and servo driver
0207 in_progress/pth_supply_servos.sch & .brd - 5V reg and servo driver
0107 in_progress/quad_ctl_094.sch & .brd - incomplete
0607 in_progress/quad_ctl_095.sch & .brd - incomplete
1106 in_progress/test_2620.sch & .brd - breakout board for some I2C sensor (avago ADNS2620 optical mouse IC?)
1205 in_progress/test_filter.sch & .brd - AD8552 dual op amp
0406 in_progress/test_usb_hub.sch & .brd - three port USB hub (no IC part number?)
0906 in_progress/tiny20_1_1.sch & .brd - LPC2148, GPS, antenna, 8x servo driver, regs
0307 in_progress/tiny20_1_2.sch & .brd - LPC2148, GPS, antenna, 8x servo driver, regs
0207 in_progress/tiny20_2.sch & .brd - (layout incomplete)
0708 in_progress/tiny4l_18_1_99.sch & .brd - (layout incomplete)
1105 in_progress/tiny_v.sch & .brd - (layout incomplete)
0106 in_progress/usb_flasher.sch & .brd - USB to UART board
0708 in_progress/vor_add_on.sch & .brd - USB to UART board (layout incomplete)
0607 in_progress/wi232_gnd_2.sch & .brd - (layout incomplete)
0707 in_progress/wi232_gnd_3.sch & .brd - some sort of wifi device with a USB to UART converter
0607 in_progress/wi232_gnd.sch & .brd - (layout incomplete)
0106 in_progress/xbee.sch & .brd - board with footprint and regulator for xbee
1105 in_progress/lpc_board.notes - notes
0606 in_progress/TODO_imu_3 - notes
0907 in_progress/imu3j.txt - notes on imu3j design
1205 in_progress/digikey.bom - bom for something?
1105 misc/supply_L5973.sch & .brd - switching regulator board (vin: ? vout: ?)
0307 misc/supply_LM1117.sch & .brd - LDO regulator board (vin: ? vout: ?)
0706 sensors/gps_13.sch & .brd - regulator, GPS, and antenna board (silkscreen claims v0.90)
0307 sensors/gyro_adxr.sch & .brd - gyro breakout board (placement/routing incomplete)
0307 sensors/gyro_idg.sch & .brd - gyro breakout board
0606 sensors/imu_3_xy.sch & .brd- gyro z, supplies, MCU, SPI magnetometer, MAX1167 SPI ADC
0606 sensors/imu_3_xz.sch & .brd - single gyro x
0606 sensors/imu_3_yz.sch & .brd - single gyro y
0506 sensors/ir_dual.sch & .brd - AD8552 dual op-amp with cons for four sensors (dual axis)
1105 sensors/ir_single.sch & .brd - AD8551 op-amp with cons for two sensors (single axis)
0606 sensors/TODO_imu_3 - errata for imu_3 (have these issues been fixed?)
It may make sense to move much of the files from in_progress somewhere else. Maybe create a "complete" directory for the designs that are considered safe to fab, and an "archive" directory for things that have been abandoned or superceded by some better design.
The wiki shows the most popular current hardware is Tiny v2.11, TWOG v1.00, IR, IMU. Please let me know if I should build these using the following files from CVS or if someone has more recent files:
Tiny v2.11: in_progress/tiny20_1_2.sch & .brd (I will add gnd and pwr planes for good design practice and reduction of noise, and probably a footprint for XBeePro)
TWOG v1.00: where is this? (I see protel files on the wiki only, is it not in CVS?)
IR: sensors/ir_dual.sch & .brd
IMU: in_progress/imu_3j_xy.sch & .brd (also xz and yz, of course)
Any other hardware that I should build while I'm at it? Also, I see some brushless DC motor controller designs, can anyone comment on how well those worked?
Thanks.
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