BATC Wiki - User contributions [en-gb]

EMFcamp 2024

2024-02-14T13:53:54Z

MW0RUD:

The [https://www.emfcamp.org/ '''Electromagnetic Field'''] is a non-profit camping festival for those with an inquisitive mind or an interest in making things: hackers, artists, geeks, crafters, scientists, and engineers. Electromagnetic Field 2024 will be held on 30 May–2 June 2024 at Eastnor Castle Deer Park, Eastnor, Ledbury.

''AMSAT-UK'', ''BATC'' & ''UKuG'' are setting up a 'village' that will host a variety of demonstrations and presentations during the weekend.

[https://amsat-uk.org/ '''AMSAT-UK''']
Represents the amateur satellite community in the UK whose members not only operate amateur satellites but also help to design, build and fund them.

[https://batc.org.uk/ '''BATC''']
The British Amateur Television Club (BATC) actively promotes the hobby of Amateur Television and covers all aspects of Television from making and editing programmes to transmitting television on the amateur radio bands. During EMF Camp, presentations will be given on the subjects, in addition to making video contacts via the QO-100 geostationary satellite.
operations.

[https://www.microwavers.org/ '''UKuG''']
The UK Microwave Group is the body who represent Amateur activities and developments in the high UHF and microwave parts of the radio spectrum.

There is a wide cross-over in the activities and interests of these three groups. And regularly work together to further the many projects and issues that affect Amateur Radio in the UK.
At EMF-2024 these three organisations will be demonstrating various aspects of the hobby. Including low earth orbiting and geostationary satellite communications and possibly deep space reception. Microwave contest operation. Digital television via terrestrial links and via the QO100 transponder, aboard a geostationary satellite. And a random selection of other interests, which members would like to showcase.

'''GB4EMF''' Amateur Radio Special Event callsign during EMF for all contacts.

'''G0AUK''' The AMSAT-UK (Club) callsign will also be in use.

=== Inhabitants ===

If you want your name added to the list but don't want to edit the wiki, give Dave Johnson (secretary at amsat-uk.org) a shout.

On-site coordination: 144.750MHz, 432.750MHz, bring an H/T!

There is a Whatsapp group. Contact Jules or Paul (EYT) if you would like to join.

{| class="wikitable"
|- style="font-weight:bold;"
! Name
! Callsign
! Ticket
! Arrival
! Departure
! Bringing
|-
| Dave Johnson
| G4DPZ
| yes
| Friday
| Sunday
| GB4EMF callsign (we can use G0AUK too), QO-100 Khune GS & 90cm Dish, complete LEO GS, LoRa TinyGS, 433/868 Lora GS for HAPS, Starlink and Switch, large mains extension
|-
| Phil Crump + 1
| M0DNY
| yes
|
|
| QO-100 DATV Uplink Chain (BATC Streaming PC, Modulator, PA) + Downlink Chain (PC, Minitiouner). Long network cabling. Possibly HamTV RX.
|-
| Jason Flynn + ?
| G7OCD
| yes
|
|
| 2.4m dish, mount & feed. Tools for dish.
|-
| Jules Smith
| G0NZO
+1
| yes
+tba
| Thursday
(Poss Wed)
| Monday
| Mains cabling (16A 5-way dist + misc), mech toolbox, soldering iron, Long ETH cable.
Fridge, gas stove, kettle, water carrier (~10L), washing up bowl, microwave oven, 5mtr 240V festoon lamp string.
POTS phones and fax, 1200bd packet system. Portsdown with PAs for 146&432MHz. Possibly contest stations for 23&13cm. Small pole mast and antennas.
|-
| Iain Young
| G7III
| yes
|
|
|
|-
| John Cariss
| G7ACD
| yes
|
|
| Event shelter. 2.4m prime dish. Camp kitchen(stand).
|-
| Dave Akerman
| M0RPI
| yes
| Thursday
| Monday
| Probably will be in my campervan in which case I'll have a fridge that can be used. Will also bring a portable fridge. Can also bring gas stoves (3) + gas. I'll also bring long CAT6 leads, 16A --> 4-way lead.
|-
| Paul Marsh
| M0EYT
| yes
|
|
| 2.4GHz DATV
|-
| Phil Ashby
| M6IPX
| yes
|
|
|
|-
| John Alexander
| M0XJA
| yes
|
|
|
|-
| Heather &
Paul Nickalls
| M0HMO/
G8AQA
| yes/yes
|
|
|
|-
| Wouter Weggelaar
| PA3WEG
|
|
|
|
|-
| Tim Clark
| MW0RUD
| yes
|
|
|}

'''NB: label your stuff folks!'''

== Village Setup ==

* 6x6m Marquee with flooring, tables (x?), chairs (x?) for stations, workshops, demonstrations. Includes interior lighting and power strip. [Rented from EMF]

* 4.5x4.5m Event shelter for mess use [G7ACD], camp kitchen, kettles, fridges, lighting as above.

* 2.4m dish on trailer (trailer to stay on site). Use unassigned. QO100 NB ? [G7ACD]

* 2.4m Dish for QO-100 WB DATV uplink [G7OCD, via small cargo trailer]

* LEO GS (G4DPZ)

* QO-100 COTS GS (G4DPZ)

* Starlink and network

== Village Happenings ==

'''TBD:''' as we sort out a plan around the main EMF schedule! Will include some talks on what AMSAT do and how, live TV transmissions via QO-100 geostationary satellite...

== QO-100 satellite dish bearing ==

[[File:amsat-village-qo-100-heading.png]]

[[Category:Villages]]

CAT 23 part 2

2023-10-24T17:38:35Z

MW0RUD: Added CAT23 Ryde talk slides

===Programme===

10:00 - Welcome - Martin G4FKK

10:05 - Ryde developments and future plans - Tim MW0RUD

11:00 - KiCad PCB design tool and ordering boards - Mike G0MJW

12:00 - Latest update on replacing Serit NIMS - Dave G8GKQ

12:20 - Live video from GB2GP, the Gilwell Park JOTA station

13:15 - DATV Not-So-Easy - Michael DL5OCD

13:55 - Narrow Band Television - Grant VE3XTV

14:55 - Closing remarks - Martin G4FKK

===Videos===

Videos of all the CAT 23 Presentations will be published on the [https://www.youtube.com/c/BATCOnline BATC YouTube Channel]

==Presentations==

[[:Media:20231021 Ryde.pdf|Ryde developments and future plans]] Tim, MW0RUD

[[:Media:20231021 KiCAD.pdf|KiCAD - The Task]] Intro to the KiCAD demo by Mike, G0MJW

[[:Media:20231021 Tuner Replacement.pdf|Replacing Serit NIMs]] Dave, G8GKQ

File:20231021 Ryde.pdf

2023-10-24T17:37:19Z

MW0RUD:

Ryde developments and future plans

CAT 21

2021-10-16T17:52:08Z

MW0RUD: Add Ryde Update slides

===Programme===

9:30 - Welcome - G8GKQ

9:45 - Portsdown update - G8GKQ

11:00 - Ryde update - Tim MW0RUD

12:00 - QO100 desktop development - Micheal EA7KIR

13:30 - EMF for microwaves and QO100 - Ian GM3SEK and Peter G4SDE - organised jointly with the UKMIcrowave group offering theory and practical advice

15:15 - DATV Rx system gain distribution - G8GTZ

===Videos===

Videos of all the CAT 21 Presentations will be published on the BATC Youtube Channel

==Presentations==

===Morning===

[[:Media:ChairmansIntro.pdf|Chairman's Introduction]] Dave, G8GKQ

[[:Media:PortsdownNewCapabilities.pdf|Portsdown New Capabilities]] Dave, G8GKQ

[[:Media:CAT21-Ryde.pdf|Ryde Update]] Tim, MW0RUD

===Afternoon===

File:CAT21-Ryde.pdf

2021-10-16T17:47:37Z

MW0RUD: File uploaded with MsUpload

File uploaded with MsUpload

Ryde GPIO breakout

2020-08-06T10:10:56Z

MW0RUD: Fix wrong resistor numbers for IR instructions

To help constructors connect easily to the Ryde RPIO, BATC has produced a small daughter board.

PCBs are available in the BATC shop - https://batc.org.uk/shop/ryde-gpio-pcb/

[[File:Ryde1.png|400px]]

===Construction notes===

* Note the GPIO board requires 5v NOT 12v!

* The GPIO header is placed on the opposite side of the PCB to the rest of the components.

* Pay attention to the orientation of the resistor arrays - they are not the same.

* Build the top side first, start with the resistors, then the resistor arrays, then the 16 way, then the headers, finally fit the 40 way on the other side of the PCB.

* The fuse is a standard automotive mini-blade, 3A. Take care inserting it as it requires considerable force. You may need to open up the socket a little.

===Schematic and bill of materials===

[[File:Ryde GPIO6.png|800px]]

[[File:Ryde GPIO 1.jpg|400px]]

Nothing is really critical here so don't worry about 47k vs 10k vs 22k resistor arrays.

What does matter is the IR sensor does not put more than 3.3V into the GPIO as the PI is not 5V tolerant. Therefore either use a 3.3V sensor as recommended, or if you insist on re-using that old sensor recovered from a set top box make a resistor divider using appropriate values for R2 and R3. See [[Ryde remote controls|https://wiki.batc.org.uk/Ryde_remote_controls]] for more details

'''Farnell part numbers: Other suppliers are available.'''

IR Sensor - TSOP2438 Farnell code 4913097 Run off 3.3V R3 4k7, omit R2.

For 5V sensors possibly set R2 10k, R3 4k7, but this may not work for all sensors. (Hint - Just use the recommended sensor, run it off 3.3V)

SIP Resistor arrays 10k 4606X-101-103LF Farnell code 9356142

Resistors e.g. 1K, 4k7, 10K Multicomp MF12 or MF25 series.

10k Farnell code 9342419

1k Farnell code 9342400

4k7 Farnell code 9343253

Connectors:

2 way Molex kk254 6373 series Farnell code 1462926

4 way Molex kk254 6373 series Farnell code 1462920

16 way socket Farnell code 1106834 or 2310066

40 way socket Farnell code 2308433

Fuse holder:

MCCQ-122 Farnell code 1586595

'''Alternative RS Parts:'''

Resistor arrays – 522-3488 (Packs of 25)

IR Sensor 180-8012 (Packs of 10)

Button switch 686-6970 (Two off pack of 5)

RS do not appear to do the fuse holder.

'''Alternative Digikey Parts:'''

TBC

Ryde GPIO Connections

2020-07-03T12:49:44Z

MW0RUD: Added mute button

===Proposed GPIO Connections for the Ryde Receiver===

Here is the proposed list of GPIO connections:

{| class="wikitable"
|-
! Pin No !! BCM No !! Wiring Pi !! RPi Name !! Primary Use !! Secondary Use !! Notes
|-
| 1 || - || - || 3.3v || - || - || -
|-
| 2 || - || - || 5v || - || - || -
|-
| 3 || 2 || 8 || SDA 1 || - || - || -
|-
| 4 || - || - || 5v || - || - || -
|-
| 5 || 3 || 9 || SCL 1 || - || - || -
|-
| 6 || - || - || 0v || - || - || -
|-
| 7 || 4 || 7 || GPIO 7 || IR Sensor Input || - || -
|-
| 8 || 14 || 15 || TxD || - || - || -
|-
| 9 || - || - || 0v || - || - || -
|-
| 10 || 15 || 16 || RxD || - || - || -
|-
| 11 || 17 || 0 || GPIO 0 || Button - Power || - || Active low
|-
| 12 || 18 || 1 || GPIO 1 || Button - Up || - || Active low
|-
| 13 || 27 || 2 || GPIO 2 || Button - Down || - || Active low
|-
| 14 || - || - || 0v || - || - || -
|-
| 15 || 22 || 3 || GPIO 3 || Button - Left || - || Active Low
|-
| 16 || 23 || 4 || GPIO 4 || Button - Right || - || Active Low
|-
| 17 || - || - || 3.3v || - || - || -
|-
| 18 || 24 || 5 || GPIO 5 || Button - Select || - || Active low
|-
| 19 || 10 || 12 || MOSI || - || - || -
|-
| 20 || - || - || 0v || - || - || -
|-
| 21 || 9 || 13 || MISO || - || - || -
|-
| 22 || 25 || 6 || GPIO 6 || Button - Back || - || Active low
|-
| 23 || 11 || 14 || SCLK || - || - || -
|-
| 24 || 8 || 10 || CE 0 || - || - || -
|-
| 25 || - || - || 0v || - || - || -
|-
| 26 || 7 || 11 || CE1|| - || - || -
|-
| 27 || 0 || 30 || SDA 0 || - || - || -
|-
| 28 || 1 || 31 || SCL 0 || - || - || -
|-
| 29 || 5 || 21 || GPIO 21 || Button - Menu || - || Active low
|-
| 30 || - || - || 0v || - || - || -
|-
| 31 || 6 || 22 || GPIO 22 || Button - Mute || - || Active Low
|-
| 32 || 12 || 26 || GPIO 26 || Band LSB || - || -
|-
| 33 || 13 || 23 || GPIO 23 || Band NSB || - || -
|-
| 34 || - || - || 0v || - || - || -
|-
| 35 || 19 || 24 || GPIO 24 || Band MSB || - || -
|-
| 36 || 16 || 27 || GPIO 27 || - || - || Future Use?
|-
| 37 || 26 || 25 || GPIO 25 || - || - || Future Use?
|-
| 38 || 20 || 28 || GPIO 28 || - || - || Future Use?
|-
| 39 || - || - || 0v || - || - || -
|-
| 40 || 21 || 29 || GPIO 29 || Valid RX Signal || - || Active High
|}

Each pin on the RPi4 GPIO can be referred to in 4 ways: its physical pin number, the Broadcom I/O number, the Wiring Pi number or the name.