Tecwyn Twmffat's instructables
Tell us about yourself!
Achievements
- Tecwyn Twmffat's instructable Long Range Machine Control System Using Multiple LoRa Modules's weekly stats:
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable Long Range Machine Control System Using Multiple LoRa ModulesView Instructable »
That's a great idea @bus6333. I'll try get this into the system once I have at least 4 pairs of LoRa modules up and running, which should be within a week I guess.
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable Intelligent Bat DetectorView Instructable »
excellent! please let me know ow you et on.
- Tecwyn Twmffat's instructable Intelligent Bat Detector's weekly stats:
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable Intelligent Bat DetectorView Instructable »
What error were you getting?Can you try this in terminal:arecord -f S16 -r 384000 -d 30 -c 1 --device=plughw:r0,0 /home/new.wav????
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable Intelligent Bat Detector
Interesting .....
View Instructable »I think all you might need to do is change the sampling frequency in record_and_filter.sh, but probably not - just use it as it is! Do you already have the mic?
- Tecwyn Twmffat entered Intelligent Bat Detector in the Raspberry Pi Contest 2020 contest
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable Intelligent Bat Detector
That's not a bad idea Paul, NCS would be great for deep learning which I'll be implementing some time soon (this year), but on a Jetson Nano.
Thanks Galt !!
That's not a bad idea Paul, NCS would be great for deep learning which I'll be implementing some time soon (this year), but on a Jetson Nano.
View Instructable »Looks like a very nice bat detector :)
- Tecwyn Twmffat's instructable An Easy Way to Make a Nucleus of Honey Bees With Queen Cell Grafting's weekly stats:
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable An Easy Way to Make a Nucleus of Honey Bees With Queen Cell Grafting
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable An Easy Way to Make a Nucleus of Honey Bees With Queen GraftingView Instructable »
I do actually 'pet' my bees. I sometimes stroke them with my finger. I once even helped hatch a queen once by helping her munch her way out of her crysalis (not with my teeth though!). Some people who keep chickens just throw in the food and water and dont even bother to cuddle them. My bees ARE domesticated and ..... generally .... dont sting me - they're deliberately bred NOT to sting people. If they were wild animals, I would be covered in stings. Very rarely, they do get into a bad mood, but generally they are lovely, friendly and fascinating creatures.
- Tecwyn Twmffat commented on BrownDogGadgets's instructable Dual Axis Tracker V2.0View Instructable »
Excellent build!How do you get it to move smoothly? I've built a similar thing to track insects, https://hackaday.io/project/161581-wasp-and-asian...but the Python Adafruit Raspberry Pi library seems to shift the servos by one whole degree at a time which makes it really rough. Did you have to tweak the arduino library at all and if so, what did you do?Also, what do you think is the actual resolution of these type of servos, in degrees? .... Thanks!
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable Low Power Weather StationView Instructable »
Good comment! There are two reasons for using the LoRa module :1. Very long range (up to 200km) and 2. Very low power consumption, especially when compared to WIFI modules.Like you mentioned, antenna is important and getting it up high may be necessary to get line of sight.Using an amplifier is (I believe) illegal on my island and output power is limited. If I was somewhere where I could amplify signal I'd use a Qorvo QPL9065 low noise amp and appropriate band pass filters to add 20 dB to signal strength.
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable Low Power Weather Station
WIFI wont give the range needed. Lora has up to 200 km with true line of sight.
WIFI wont give the range needed. Lora has up to 200 km with true line of sight.
WIFI wont give the range needed. Lora has up to 200 km with true line of sight.
View Instructable »Thanks - I'm hoping to win a mug!
- Tecwyn Twmffat entered Low Power Weather Station in the PCB Contest contest
- Tecwyn Twmffat's instructable LoRa + Neural Network Security System's weekly stats:
- Tecwyn Twmffat commented on kd8bxp's instructable Robotic Indoor Navigation With RFID/NFC TagsView Instructable »
Thanks for reply. I can see that the bot itself has some issues, but proof of concept for using the tags is the main thing I'm interested in. I'm not sure what 95% means as I don't know the spacing of the tags. What do you think the accuracy is in mm? Maybe +- 5 mm?
- Tecwyn Twmffat commented on kd8bxp's instructable Robotic Indoor Navigation With RFID/NFC TagsView Instructable »
Nice - what kind of accuracy do you get?
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable Autonomous Agri-Robot Control SystemView Instructable »
The results are very good - everything on it works fine. I'm not quite sure what the hardest part is yet - I'm trying to get the torque balanced on the drive wheels at the moment.Distinguishing weeds would be done by another separate 'off the shelf' module which would then provide coordinates of a grid to the main controller, so not really too complicated, hopefully.It's true that intricate projects get side-lined here - a few reasons: This site is aimed primarily at young people who need simple projects to learn on and intricate projects are too intimidating also the site moderators wont understand the project so will default to the garbage bin.
- Tecwyn Twmffat's instructable Autonomous Agri-Robot Control System's weekly stats:
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable Autonomous Agri-Robot Control SystemView Instructable »
Yes I reckon it has the intelligence of a bacteria.
- Tecwyn Twmffat's instructable ☠WEEDINATOR☠ Part 4: Differential Steering Geometry Code's weekly stats:
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠WEEDINATOR☠ Part 4: Differential Steering Geometry Code
You can use my code!
View Instructable »Thanks ! Just waiting for a motor upgrade to arrive tomorrow to test it all out in real life.
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠WEEDINATOR☠ Part 3: Chassis BuildView Instructable »
I'm just doing it right now:https://www.instructables.com/WEEDINATOR-Part-4-Differential-Steering-Geometry-C/
- Tecwyn Twmffat's entry ☠WEEDINATOR☠ Part 3: Chassis Build is a finalist in the Metal Contest 2017 contest
- Tecwyn Twmffat's instructable ☠WEEDINATOR☠ Part 3: Chassis Build's weekly stats:
- Tecwyn Twmffat commented on bricobart's instructable 18th Century Style Custom Pistol (nerf)View Instructable »
Wow thanks! I'll try and save a bottle of sloe gin for you, current batch is 3 gallons so it should not be too difficult.
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠WEEDINATOR☠ Part 3: Chassis BuildView Instructable »
Thank you!
- Tecwyn Twmffat commented on bricobart's instructable 18th Century Style Custom Pistol (nerf)View Instructable »
These guns would be perfect for the crew of my ship. Real guns would be inappropriate as they're always getting extraordinary drunk and would just end up hurting each other by mistake. I'd have to hide the actual nails though.
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠WEEDINATOR☠ Part 3: Chassis Build
Do mean welding aluminium or welding in general? There's no big secret to welding aluminium :)
View Instructable »It's an autonomous tractor that specializes in weeding by using an onboard CNC machine.
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠WEEDINATOR☠ Part 3: Chassis BuildView Instructable »
I can weld aluminium ok - it's just that it's very expensive.
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠WEEDINATOR☠ Part 3: Chassis BuildView Instructable »
Thanks Sam - comments are appreciated! Please could you elaborate on why you think it's over built? I am trying to remove as much bulk as possible with the plasma cutter.
- Tecwyn Twmffat entered ☠WEEDINATOR☠ Part 3: Chassis Build in the Epilog Challenge 9 contest
- Tecwyn Twmffat entered ☠WEEDINATOR☠ Part 3: Chassis Build in the Wheels Contest 2017 contest
- Tecwyn Twmffat entered ☠WEEDINATOR☠ Part 3: Chassis Build in the Metal Contest 2017 contest
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠Weedinator Part 2: Satellite Navigation☠View Instructable »
Thanks for your comment, Mark. Next instructable will be about building the chassis, which was finished today. Should get it published in the next week or so. After that it would be the CNC build but there might be a bit of a delay whilst I try and get some sponsorship from my suppliers.I was not expecting to get the whole machine finished until 2019, but progress has been faster than expected so there will probably be a working prototype in the Spring 2018 for 'Proof of Concept'.
- Tecwyn Twmffat's instructable ☠Weedinator Part 2: Satellite Navigation☠'s weekly stats:
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠Weedinator Part 2: Satellite Navigation☠View Instructable »
Yes no problem - pleased to help.
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠Weedinator Part 2: Satellite Navigation☠
Yes .... You are absolutely ..... I'm secretly planning to colonise Mars and build a large 5 star hotel for future travellers. There will be a 'Low Gravity' golf course as well.
I think this is what the RTK (Real Time Kinetics) does in the Ublox MCU.
Thanks for the tips. I'll need to repeat my tests with the base station 100 metres away from the rover and see if there is any extra error. Obviously, if it was 10,000 metres away the environmental conditions such as cloud and humidity would be different so there would then be more error.Radar sounds like a good idea and I did look into it briefly. I don't think it's so easy to get an 'Out of the Box' solution as with GPS / GNSS. I'm sure that if WW3 breaks out then all the satellites will go offline, but until then I think I'll carry on using them!
View Instructable »Very Cool!
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠Weedinator Part 2: Satellite Navigation☠
I guess the compass could be used to check that the history is still relevant.
Most of the work will be done by a rotating claw that moves around inside the Weedinator chassis as in animation. It wont spray any herbicide and will be able to recognise weeds through object recognition cameras. It will probably also have some kind of pest control system eg an on board water canon for pigeons. - not sure of the details yet.
Hello Hamblinm - You are very welcome to build your own Weedinator - just check out the license here: https://creativecommons.org/licenses/by-nc-sa/2.5/A 50 hp diesel engine sounds like a good idea.
View Instructable »That is very true. The GPS is only accurate to 40 mm in the system and yes it does have the groundstation, base station whatever you want to call it . There are various object recognition options available and the technology is for this advancing very rapidly at the moment. Four example, check out google AIY .
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠Weedinator Part 2: Satellite Navigation☠View Instructable »
Weedinator - an autonomous agricultural electric tractor that can be used on small farms to cultivate, till, plant and weed seed beds. It will be able to travel up and down 56 inch wide beds, several times a day if necessary, performing a multitude of quite delicate tasks which a big tractor might struggle with. Some of the key advantages are:Less need for heavy cultivation such as ploughing which destroys soil structure. Preservation of soil health by keeping essential natural micro-organisms and nutrients near the top of the seed bed rather than burying them. No fumes or pollution especially in glasshouses or polytunnels. Will help small farms compete financially with big industrial producers.Will the Weedinator destroy jobs or will it encourage lots more people to set up…
see more » - Tecwyn Twmffat commented on AMbros Custom's instructable Stainless Steel Stair Guard Rail Build & InstallationView Instructable »
Very nice instructable! Watch out for the UV light from the welder as it contains just the right wavelengths to give you skin cancer - Never weld in shorts or T shirt or both!
- Tecwyn Twmffat's entry ☠Weedinator Part 1: Drive Mechanism☠ is a winner in the Make It Move Contest 2017 contest
- Tecwyn Twmffat commented on Ropecar's instructable 3D Printed 18DOF HexapodView Instructable »
Very nice!
- Tecwyn Twmffat's entry ☠Weedinator Part 1: Drive Mechanism☠ is a finalist in the Make It Move Contest 2017 contest
- Tecwyn Twmffat's instructable ☠Weedinator Part 1: Drive Mechanism☠'s weekly stats:
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠Weedinator Part 1: Drive Mechanism☠
Thank you!
View Instructable »Thanks skrubol - that's a really good tip. I found some 8Nm motors here: http://www.electrocraft.com/products/bldc/RP34/Not sure what the price would be yet.
- Tecwyn Twmffat commented on Tecwyn Twmffat's instructable ☠Weedinator Part 1: Drive Mechanism☠
Ah yes ..... so how big will it be and how fast will it travel?
Normally a tractor will have rigid back axles and a front axle that swivels in the XY plane. I could have copied the normal tractor design, but this solution saves a lot of weight and enable all four drive units to have the same design so easier to build and maintain.
View Instructable »yes please - that would be really useful.
- Show More Activities