tag:blogger.com,1999:blog-4455987088008622536.post5727952160468059472..comments2024-03-11T20:38:43.142+00:00Comments on Gadjet's Blog: DIY Chrono Shopping listGadjethttp://www.blogger.com/profile/03523239254572573477noreply@blogger.comBlogger99125tag:blogger.com,1999:blog-4455987088008622536.post-62567106801305095122021-10-10T08:49:38.605+01:002021-10-10T08:49:38.605+01:00Hello Gadjet,
thankyou so much, now the APK is run...Hello Gadjet,<br />thankyou so much, now the APK is running very stable on my Xiaomi POCO M3. Finally also the velocity in mps, excellent job, thankyou :)Blobberhttps://www.blogger.com/profile/09653584686393742038noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-82325168520600454422021-10-09T09:02:06.344+01:002021-10-09T09:02:06.344+01:00Hopefully you can download APK from here https://1...Hopefully you can download APK from here https://1drv.ms/u/s!AkqVSEM4Y7kDhJwpFNLiNIEqkZ7T0g?e=OnyOEiGadjethttps://www.blogger.com/profile/03523239254572573477noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-20330941352976335732021-10-09T08:50:17.486+01:002021-10-09T08:50:17.486+01:00Blobber,
Give thid a try https://gallery.appinven...Blobber, <br />Give thid a try https://gallery.appinventor.mit.edu/?galleryid=5394502778355712<br />Not promising but it works on my S21 but I haven't got a working chrono to had to try it at the minute but the app fires up OK.Gadjethttps://www.blogger.com/profile/03523239254572573477noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-75446623703908568232021-10-09T02:09:44.419+01:002021-10-09T02:09:44.419+01:00That would be great, thankyou :)That would be great, thankyou :)Blobberhttps://www.blogger.com/profile/09653584686393742038noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-8604167163409353302021-10-07T22:22:41.713+01:002021-10-07T22:22:41.713+01:00I've not done anything with the app for a few ...I've not done anything with the app for a few years I'll have to have another go with it on my latest phone and seee if I can fix it.Gadjethttps://www.blogger.com/profile/03523239254572573477noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-29370417376687931982021-10-07T16:16:57.398+01:002021-10-07T16:16:57.398+01:00Hello Gadjet,
is there a latest version for the An...Hello Gadjet,<br />is there a latest version for the Android app available? On my new phone, the app is not supported anymore, I get the message, that the operation checked can not accept the arguments: (0)Blobberhttps://www.blogger.com/profile/09653584686393742038noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-47109853961075074262021-05-26T13:18:14.945+01:002021-05-26T13:18:14.945+01:00okay thanks buddyokay thanks buddyAnonymoushttps://www.blogger.com/profile/07275850251687487890noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-35854186221135008652021-05-26T13:06:19.970+01:002021-05-26T13:06:19.970+01:00If I remember correctly there are just 6 pins requ...If I remember correctly there are just 6 pins required, 2 for the two triggers and 4 for the LCD display, all these can be digital pins.<br />I'm learning to program the Pico in Python and C++ due to C++ being even faster than Python or the arduino IDE.<br /><br />I am finding the micropython programming workflow a lot easier to use than the Arduino IDE, I'm currently using Thonny to write code and program, check out Youtube for some guides it's easier than Arduino IDE :-)<br /><br />If I come up with some code I'll let you know but it's not at the top of my todo list at the moment, good luck and post here if you get it working.Gadjethttps://www.blogger.com/profile/03523239254572573477noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-4233085466240581572021-05-26T12:22:34.811+01:002021-05-26T12:22:34.811+01:00OH okay buddy, if you ever happen to write a code ...OH okay buddy, if you ever happen to write a code for pico as it is as easy now because you can program it with arduino ide let me know since i am interested to build one. If you have some spare time, please let me know if you do it . It would help me if you can send a pi pico based code, also i will probably be using a 16x2 display since its cheap and looks nice. Thanks for taking your time to reply to my queries.Anonymoushttps://www.blogger.com/profile/07275850251687487890noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-55235455396307143982021-05-26T12:15:59.693+01:002021-05-26T12:15:59.693+01:00Although it's been a long time since I did it ...Although it's been a long time since I did it I can't remember why I used analog pins but I don't think there was any analog signals involved, there's no reason why you couldn't use digital pins...... I think.<br />I have got a Pi Pico and was thinking of writing the code for the chronograph on that as it is a lot quicker, the chrono that I have uses the Bluetooth interface to speak with the app on my phone but I've not used it for a long time. Gadjethttps://www.blogger.com/profile/03523239254572573477noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-36992357920580389812021-05-26T12:08:15.283+01:002021-05-26T12:08:15.283+01:00btw i just checked your code and the one i will be...btw i just checked your code and the one i will be building is one with 16x2 display. Your code uses 4 analog pins so i guess i will get back to arduino nano (the new arduino reconnect would have been great as it houses the same rp2040 microprocessor and has more analog pins around 7 but its 35$). The pico unfortunately has only 3 analog pins.Anonymoushttps://www.blogger.com/profile/07275850251687487890noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-71225100218873966032021-05-26T10:20:06.059+01:002021-05-26T10:20:06.059+01:00Btw how many analog pins did you use on arduino? I...Btw how many analog pins did you use on arduino? I hope it's less than 3 or 3 at most since I will have to build it on nano otherwise since Pico only has 3 analog portsAnonymoushttps://www.blogger.com/profile/13631215235627286097noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-36012742080400463232021-05-26T10:18:33.991+01:002021-05-26T10:18:33.991+01:00Oh okay! I will use a normal one and I will try to...Oh okay! I will use a normal one and I will try to modify the code to build it on raspberry pi Pico since it has a faster clock speed and will result in more accuracy.Thanks for the help! I guess I will make one now instead of spending 70 bucks on a commercial one which I will hardly use. Anonymoushttps://www.blogger.com/profile/13631215235627286097noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-76543864429807283362021-05-26T09:41:45.545+01:002021-05-26T09:41:45.545+01:00The receiver is the tricky part so if you can get ...The receiver is the tricky part so if you can get that then you're mostly there, you can use a normal IR emitter instead of the one listed without any issues other than packaging it. Gadjethttps://www.blogger.com/profile/03523239254572573477noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-60820551457639299102021-05-26T08:57:49.945+01:002021-05-26T08:57:49.945+01:00oh okay, actually i live in india so supposedly th...oh okay, actually i live in india so supposedly they are quite difficult for me to find. I was able to find the reciever but not the transmitter. Also as you said analog will be quite slow so not worth it.Anonymoushttps://www.blogger.com/profile/07275850251687487890noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-53031791632472122602021-05-26T08:12:59.958+01:002021-05-26T08:12:59.958+01:00unknown,
The IR emitter and detector are still ava...unknown,<br />The IR emitter and detector are still available from RS components, are you not able to buy from them?<br />I suppose you could use any IR emitter and IR photo-diode but you would need to interface the analogue photo-diode output digital input of the Arduino or edit the code and use an analogue input maybe?<br />I used the specific IR receiver because of it's digital output and high speed response time. Gadjethttps://www.blogger.com/profile/03523239254572573477noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-62862901578674956232021-05-26T05:14:05.550+01:002021-05-26T05:14:05.550+01:00I am not able to find your ir emitter and i want t...I am not able to find your ir emitter and i want to build one. Can i use a normal cheap ir emitter? Also since i am so late is there a better option for the ir recievers(photo diode)?<br />Anonymoushttps://www.blogger.com/profile/07275850251687487890noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-7986787382451135692018-06-24T16:38:15.387+01:002018-06-24T16:38:15.387+01:00Prüfe, was du eingefügt hast, stimmt mit der Skizz...Prüfe, was du eingefügt hast, stimmt mit der Skizze überein. Manchmal, wenn Sie kopieren und einfügen, werden einige Zeichen geändert. Was ist der Fehler?Gadjethttps://www.blogger.com/profile/03523239254572573477noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-7662918840586110832018-06-24T15:34:15.861+01:002018-06-24T15:34:15.861+01:00Hallo ich hab das ganze nachgebaut nur der skech f...Hallo ich hab das ganze nachgebaut nur der skech fehlt mir kann mir jemand helfen "7 segment anzeigeSeyitnoreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-39459026210244313282018-03-17T09:04:53.510+00:002018-03-17T09:04:53.510+00:00Good that you've got it basically working, if ...Good that you've got it basically working, if you look at the bottom picture in this post you'll see the drawing of the tube and beam arrangement, as I only use one emitter and detector it is very important that the effective beam path is quite narrow so that a passing pellet will be sufficient to interrupt the beam completely therefore the gap is around 10mm and the walls of the tube are 2 or 3mm, which puts the receiver at the bottom of a tube which helps the shield it from other ambient light and makes it more sensitive to the beam being blocked by a passing LED.<br /><br />With a 40mm tube I'm guessing you are getting a wide beam that will pass around the pellet and a large percentage of the IR is still reaching the receiver, when you use your finger you are blocking a lot more IR light and triggering the sensor.<br /><br />There are a lot of chronographs that have a wide tube but they use multiple emitters and receivers and are looking for a change in the IR light level caused by the pellet's shadow across several photo diodes.<br /><br />I hope this helps explain things, a smaller thicker tube with a shorter distance between sensors should help, also the holes must be in-line with each other. I used my phone's camera to see the IR light and I could see that the light from the emitter was aimed at the hole in the other side of the tube.Gadjethttps://www.blogger.com/profile/03523239254572573477noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-13073602131207334882018-03-17T01:35:45.319+00:002018-03-17T01:35:45.319+00:00Hi Gadjet,
I've done my build, sketch, wirein...Hi Gadjet,<br /><br />I've done my build, sketch, wireing all ok. On test phase if I break the ir beam with my finger I can see results but if I "throw" anything else(screw, bb pellet, even a pencil) through the tube it's just not working (Seems that the ir beam not break)<br /><br />I use pvc pipe inner diameter 40mm and 60mm gap between sensors.<br /><br />Any idea what did I wrong?<br /><br />Thanks TiborTibornoreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-446244079009877712018-03-12T14:24:08.420+00:002018-03-12T14:24:08.420+00:00Thats, great. Thanks Gadjet!
Soon I can post phot...Thats, great. Thanks Gadjet!<br /><br />Soon I can post photos and test results.<br /><br />Regards<br /><br />TibprTibornoreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-74327845849189362132018-03-11T07:45:11.397+00:002018-03-11T07:45:11.397+00:00
Hi,
for feet per second distance ((between sensor...<br />Hi,<br />for feet per second distance ((between sensor(mm) / 25.4)/12)x1000000 (because the count is in uSeconds)<br />The value is the distance between sensors in feet *1000000<br />Convert the distance in mm to inches. 60mm = ((60/25.4)/12)*1000000 =196850<br />therefore 80mm = ((80/25.4)/12)/1000000 = 262467<br /><br />Hope that helps, if you have excel just put the calculation in a cell and fill in the distanceGadjethttps://www.blogger.com/profile/03523239254572573477noreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-642451011597552402018-03-10T09:23:40.880+00:002018-03-10T09:23:40.880+00:00Hi Gadjet,
After the first assembly looks okay, I...Hi Gadjet,<br /><br />After the first assembly looks okay, I made som adjustment on the 8x2 sketch to fit for my purposese.<br /><br />Can you please confirm one stuff below?<br /><br />unsigned long SensDist = 196850; // I wish to use 60mm or 80mm spacing between the sensors. Can you please tell me how this number calculated or what is this number? : 196850<br /><br />Couldn't figure out :/<br /><br />Thanks<br /><br />Tibor<br />Tibornoreply@blogger.comtag:blogger.com,1999:blog-4455987088008622536.post-1494049340975800432018-03-08T06:31:28.707+00:002018-03-08T06:31:28.707+00:00That's strange I thought they came in 8MHz or ...That's strange I thought they came in 8MHz or 16MHz, 16MHz is better because it will run more clock cycles in the time between triggers and therefore have a better resolution but should still be able to run OK, I'm not sure about the accuracy but if you think it affecting it then make the distance between the sensors a bit larger to compensate, say 80mm, a third bigger.Gadjethttps://www.blogger.com/profile/03523239254572573477noreply@blogger.com