Search found 16 matches

by robertha
Thu Jan 22, 2015 2:44 pm
Forum: Software development
Topic: pre 2.4 version r1729
Replies: 100
Views: 21100

Re: pre 2.4 version r1729

I believe there is a wrong factor (100000) to convert PSENSOR current value (mA) to used power (mAh) - line 444 in Multiwii.cpp. As we have also amperage available and when we found correct PINT2mA factor to convert measure value to mA, but in this case the consumed power number is wrong beacuse of ...
by robertha
Thu Jan 15, 2015 12:04 pm
Forum: Ideas
Topic: Attemp to integrate sonar (ultrasonic sensor)
Replies: 265
Views: 134989

Re: Attemp to integrate sonar (ultrasonic sensor)

Agree - I did the same finding, believe the SRF04 power surge during the ultrasoninc burst is quite high. I have also great results attaching capacitor on SRF04 power lines (+5V, GND) directly (parallel with supply wires). I did use this capacitor 3300uF 16V. m I attached few pictures to demonstrat...
by robertha
Wed Jan 14, 2015 9:16 am
Forum: Ideas
Topic: Attemp to integrate sonar (ultrasonic sensor)
Replies: 265
Views: 134989

Re: Attemp to integrate sonar (ultrasonic sensor)

Just wanted to say that I used code from kataventos's post. I have a cheap HC-SR04. Had to re-arrange the code a bit for MWI 2.3 but it works fine. There is a big improvement in triggering the sonar RARELY. I settled for 10Hz. I get no spikes and other artifacts as I had with a tighter (original) l...
by robertha
Tue Dec 02, 2014 2:20 pm
Forum: Getting Started - MultiWii config and setup
Topic: setting up VBAT on multiwii 2.3
Replies: 6
Views: 2634

Re: setting up VBAT on multiwii 2.3

@ argotera If someone connect resistors as U suggest it WILL KILL HIS MULTIWII BOARD - actually what teslahed stated IS correct - the resistor between analog pin and GND should be the of lower value from both because: Vout = R2/(R1+R2)*Vin if R2=33k, R1=51k and Vin=12.6V then Vout=4.95V if as U sugg...
by robertha
Tue Dec 02, 2014 1:57 pm
Forum: General discussions
Topic: How to set VBAT (Ver2.1)
Replies: 34
Views: 15489

Re: How to set VBAT (Ver2.1)

I agree with natael - the picture on first post is wrong when compare with config.h - if someone will use the resistor values from config.h and connect as on that picture then it will damage the processor as it receive voltage higher than 5V on analog pin. Please redo the picture or remeber the resi...
by robertha
Thu Jul 24, 2014 1:28 pm
Forum: Ideas
Topic: Attemp to integrate sonar (ultrasonic sensor)
Replies: 265
Views: 134989

Re: Attemp to integrate sonar (ultrasonic sensor)

Agree - I did the same finding, believe the SRF04 power surge during the ultrasoninc burst is quite high. I have also great results attaching capacitor on SRF04 power lines (+5V, GND) directly (parallel with supply wires). I did use this capacitor 3300uF 16V.

http://www.hobbyking.com/hobbyking/stor ... =capacitor
by robertha
Sun Mar 02, 2014 12:34 pm
Forum: ESCs, propellers , servos and radios
Topic: 3DR Radios
Replies: 21
Views: 3888

Re: 3DR Radios

Hi, when using the 433 MHz telemetry from HK or RCT then the ground station local noise is very high (80dB) and affect range significantly. I tested using second Air module instead (purchased from RCT) connected to USB by using USB to 232 TTL convertor - I use the FeiYu Tech cable from Hobbyking SKU...
by robertha
Sun Feb 02, 2014 10:32 pm
Forum: Software development
Topic: Code/Mixer for Variable Pitch Quad
Replies: 3
Views: 1564

Re: Code/Mixer for Variable Pitch Quad

I believe this yaw is done by adjusting the pitch of diagonal rotors - yaw right by increasing pitch of the front left and rear right and decreasing pitch of front right and rear left, the yaw left the same way but opposite pitch. The motor is simply running the flat line curve (or maybe slight V ty...
by robertha
Tue Jan 07, 2014 10:38 am
Forum: Software development
Topic: Code/Mixer for Variable Pitch Quad
Replies: 3
Views: 1564

Re: Code/Mixer for Variable Pitch Quad

Hi I think the software for variable pitch control was in the download section some time ago, this was just my imagination or it was there and it was removed as not used ? Now it could be usefull as new equipment appears which could use it - variable pitch quad with one motor. m Great video is on th...
by robertha
Tue Jan 07, 2014 10:22 am
Forum: Software development
Topic: LED Ring I2C device
Replies: 97
Views: 16191

Re: LED Ring I2C device

Thank you for quick reply Shikra. I understand the address 8-7 bit change, but how could work int16_t parrams array in LEDRing.ino when we send uint8_t from multiwii is beyond my imagination. I am asking because I trying to make a small device with one RGB led and ATTiny to signal MWii status but st...
by robertha
Mon Jan 06, 2014 10:59 pm
Forum: Software development
Topic: LED Ring I2C device
Replies: 97
Views: 16191

Re: LED Ring I2C device

Hi, I have 2 (maybe stupid) questions regarding LEDRing: - in LEDRing.ino is - #define I2C_address 0x6D - as a LEDRing address, in contrary in Alarms.cpp is - #define LED_RING_ADDRESS 0xDA -in LEDRing.ino is - as int16_t param[10]; //* Parameters passed from Multiwii */, in Alarms.cpp is - uint8_t b...
by robertha
Tue Nov 26, 2013 7:30 pm
Forum: Software development
Topic: Altitude Hold/Advanced Failsafe solutions by NHA
Replies: 270
Views: 62700

Re: Altitude Hold/Advanced Failsafe solutions by NHA

In my opinion have fixed throtle as a failsafe is a bit pathetic - when wrongly set (weight change - different batery, without camera), the copter will either fall as a brick or fly away - depend just on weight to thrust ratio - think the NH vario descent is an absolute minimum for failsafe.
by robertha
Tue Nov 26, 2013 8:40 am
Forum: Getting Started - MultiWii config and setup
Topic: connecting i2c lcd screen
Replies: 7
Views: 995

Re: connecting i2c lcd screen

This HK i2C display is compatible with DFRobot module I2C/TWI LCD1602 Module (SKU: DFR0063) - tested on my piece and with example and library from this link http://www.dfrobot.com/wiki/index.php/I ... U:_DFR0063), it is probably using different command set than LCD03, but I have no clue where to change what in Multiwii code.
by robertha
Fri Oct 11, 2013 2:04 pm
Forum: Ideas
Topic: What about using BlinkM - like Naza style led
Replies: 5
Views: 1029

Re: What about using BlinkM - like Naza style led

It should not be a difficult task as it could use very simmilar program chunk as LED Ring which is already in main branch. Could someone just modify this or direct how it should be modified to work with BlinkM ?

Robert
by robertha
Fri Oct 11, 2013 1:49 pm
Forum: Ideas
Topic: Realtime PID values
Replies: 3
Views: 809

Re: Realtime PID values

Hi, I believe you mean the integrator sum and perhaps the actual error which controler operates - it will be visible if you could add them as the debug value - then visible in the graph - in configurator. The point is I dont know where to find correct parameters in the code, could someone help us an...
by robertha
Sun May 12, 2013 10:04 pm
Forum: Software development
Topic: WinGUI 2.2
Replies: 50
Views: 11617

Re: WinGUI 2.2

Dear EOSBandi

In WinGUI 2.2 Parameters page the Level I default value is shown as 0.10 but in MultiwiiConf and on the OLED it shows 0.010.

Regards

Robert