Thursday, 13 January 2022

SEQURE SI012 Intelligent soldering iron

Can use Sequre T12 tips and Hakko 001 long tips by changing contact positions.

Purchase links

Sequremall - Aliexpress - SI012 Features 1. Multi mode power supply: dc12-25v, 3s-6s, pd3.0 2. Compatible with Sequre 001 and Hakko T12 soldering iron heads 3. Buzzer function reminder. 4. Programmable firmware upgrade. 5. Intelligent temperature control algorithm, one key temperature rise, accurate temperature calibration and efficient compensation.

Wednesday, 27 January 2021

SEMCO mini Iron for laminating

This very cheap mini craft iron is perfect for laminating foam planes. A$13.00 from Spotlight. 

Birch also make a mini iron but it's much more expensive A$56.00 and not as durable (according to my crafty wife)

SEMCO 400W mini iron.

Friday, 27 November 2020

How to find stuff on my YouTube channel

 Search for a specific video (Only on a computer)

Playlists of related videos (Playlist Tab)

Find my email address (About Tab - Only on a computer)

Read the description

Sunday, 25 October 2020

RC, FPV and FCB terms

FPV - First Person View. Flying while watching an onboard video transmission.

VTx VRx - Video transmitter and video receiver used for FPV.

FCB - Flight Control Board (eg. Matek F405-Wing)

MCU - Microcontroller Unit (Main processor chip of FCB eg. STM32F405)

IMU - Inertial Measurement Unit (Gyro and Accelerometer chip eg. MPU 6000)

Baro - Barometer Altitude sensor (eg. BMP280)

Magnetometer - Electronic Compass (eg QMC5883)

DFU - Direct Firmware Upload (Processor Mode which allows firmware upload)

MSP - Multiwii Serial Protocol. Communication protocol used by INAV and FCBs. MSP came from Multiwii software, which was derived from the Nintendo Wii Game Controller. 

Serial Port - Pins or pads on FCBs for connecting external devices. Serial means all channel signals use the same wire. 

UART - Universal Asynchronous Receiver Transmitter Serial port. Pins or pads where UART devices (GPS, RC receivers, camera controls) connect to the FCB. Pins labelled - Ground Voltage RX TX. RX from the device connects to TX on the UART

I2C or I squared C - Inter Integrated Circuit Serial port. Pins or pads where I2C devices (compass, OLED screen) connect to the FCB. Pins labelled - Ground Voltage SDA SCL

SPI - Serial Peripheral Interface. Connection interface for onboard devices like SD card reader and barometer

ADC - Analog to Digital converter. FCB component that converts a varying voltage input to a digital output. Used for displaying battery voltage, current, analog airspeed sensor and analog RSSI values.

Soft Serial - Extra Serial port enabled in software, by repurposing spare UARTs pins. Eg Smart Port telemetry connection to an unused TX pin.

Vbat - Flight battery Voltage. May be filtered on some FCBs to reduce video interference

OSD - On Screen Display

GNSS - Global Navigation Satellite System (Commonly called GPS, but GPS only refers to the US satellite system. Other GNSS systems include Galileo, GLONASS)

OLED - Organic Light Emitting Diode used in OLED data display screens and some FPV goggles

RSSI - Received Signal Strength Indicator. A number representing the strength of an RC signal at the receiver.

LQ - Link Quality. A number representing the strength and quality of an RC signal.

LFR - Lost Frame Rate % - Percentage of lost frames in an RC Signal

PWM - Pulse Width Modulation. Basic RC signal protocol which uses an individual wire for each channel signal. Used for connecting servos to a receiver or receiver to FCB.

PPM or CPPM - Pulse Position Modulation. Serial RC protocol. Used for connecting a receiver to FCB, or RF module to a transmitter. All channel signals on one wire

SBUS - FrSKY and Futaba Serial RC protocol. Used for connecting a receiver to FCB, or RF module to a transmitter. All channel signals on one wire. 

SPort - FrSKY Smart Port Telemetry system. Extra socket found on FrSky receivers to connect telemetry sensors.

FPort - FrSKY SBUS and SPort combined. RC and telemetry signals on one wire.

iBUS - FlySKY Serial RC protocol. All channel signals on one wire.

CRSF - Crossfire. Team Black Sheep long range RC protocol. Similar to FPort.

R9 - FrSKY Long range RC protocol 

ESC - Electronic Speed Controller

BEC - Battery eliminator circuit. Confusing term for a voltage regulator found on ESCs and FCBs. BECs reduce and smooth out the battery voltage for use by lower voltage devices. Eg. 9V or 5V for FPV gear, 5, 6 or 7.2V for servos. 

Friday, 3 July 2020

Invalid lines in OpenTX Telemetry log files

This message is very irritating when you're wanting to view a telemetry log file in OpenTX Companion.

Fortunately the fix is not too difficult.
The problem most likely is that the log file contains a column of values that are not relevant for your chosen radio.

For example, with my Taranis X9 Lite and Archer M+ receiver connected to a Matek F405 Wing board and all telemetry being logged, the file includes a column of nonsense values for SF. However there is no switch F on the X9-Lite.

OpenTX log files are in csv format, or comma separated values, and can be opened in any spreadsheet
program such as Excel in Windows or Numbers in Mac OS.

Open the log file in a spreadsheet program and look for the offending column and delete it. 

Then resave or export the file as CSV again.

Then the log file should open correctly using OpenTX Companion, and you should be able to display the GPS track in Google Earth.

SUBSCRIBE iNav Rover Mission
SUBSCRIBE iNav Rover Mission

Wednesday, 24 June 2020

iNav Waypoint Mission Notes

Using Mission Control in the iNav configurator

First waypoint needs to be closer than 100m to the arming or home position. 

This default distance of 100m (10000cm) can be changed in the CLI.

set nav_wp_safe_distance = 10000 (0 - 65000)

Can't arm if it's too far away. May be a safety feature so you dont load the wrong mission.

Default Alt and Speed for all waypoints can be preset using the little gear icon. 

Note that Waypoint Speed is not used for fixed wing and rover missions (only used for multi rotors)

Fixed Wing and Rover both use Cruise Throttle to set the speed for missions. Cruise Throttle must be set high enough for safe RTH and Pos Hold flying.

Waypoint height is in cm (above the home altitude)
5000cm = 50m

If you dont tick "RTH at end of the mission" the plane will loiter at the last waypoint using Pos Hold and Alt Hold.

Rovers need RTH and Landing ticked to stop when home position is reached.

Saving the mission

Save file (Saves the mission on to your computer or phone for later use)

Save Mission to FC (Temporarily saves mission to the FC. Mission is deleted when the FC is powered down)

Save Eeprom Mission (Saved to the FC until it is overwritten by the next Save Eeprom mission command)

Activating the mission

Before arming:
Stick command - Pitch UP and Roll RIGHT to make the mission available for this flight.

In the air:
Turn WP switch on while flying to activate the mission.
Turn WP switch off to end the mission and return to normal iNav control

Satellite view instead of drawn maps

Click on the little gear icon in iNav Configurator, top right, to change map providers.

Choose Bing Maps and enter your personal API key, then restart iNav Configurator and that's all.

OK, how do you get an API key? Quite easy really.

Just enter iNav as the application, nothing else required.

Friday, 12 June 2020

Calculate maximum flight time

If you know your average cruise current you can estimate maximum flight time from any battery.

Assuming you only want to use 80% of the battery capacity the equation is:

Battery mAH divided by Cruise Current Amps multiplied by 0.048 = Flight Time Minutes

Example using 2200mAH Lipo and 3Amp cruise current 

2200mAH / 3A X 0.048 = 35min

Note that battery cell count is not required for the calculation