New design alpha tester
 

As you can see in post 653 I'm working on a way to simplify a lot the digital part by using a ready-made board. The analog front end is the original. Right now I think the project status is not ready for public access, but if you have some electronic experience and would like to give it a try send me a message.

Sure! I'll give it a try. It could be exiciting to work on it.

New design coming
 

I'm still fighting some sync issues. Tonight I'll do more test and when solved I'll give something to try. Also I received a suggestion by Howard Cano to start a new thread just to avoid confusion by mixing projects.

Here's a very interesting development on the decoder:
http://www.rctech.net/forum/radio-el...o-revised.html

Decoder problem
 

Hello, i got a problem with ftdi and decoder, the hyperterminal dont show anything, i try changing the COMPORT but nothing happend, i have ftdi connected with RX signal to U62 pin2. Maybe someone could helpme.. :(

thanks

I reprogram the pic16F886, and now the decoder connect to Zround, but cant read transponders. In putty i dont have the power-up message. Do you know whats happening? some help pls.

Use an oscilloscope to check that the power-up message appears at pin 17 of the microprocessor, and (inverted) at U62A pin3 and J65 pin 1. If it's not there, check for a 20MHz clock at pin 9 of the microprocessor.

If the power-up message is at J65 pin1, then you'll need to determine what's wrong with the RS232-to-USB converter you have chosen.

Decoder working
 

Thanks Howard, i got the decoder working, i miss the errata.txt and didnt connect U20A pin 3 and U21 pin 4.
whit this jumper the decoder work really good, thanks to you our club now got thelemetry.

I know you've been working hard on the decoder, so this is great news. I think the guys in your club owe you a big "Thank You"!

Test of other transponders
 

Love this hread. So much knowledge in this community. I'm toying with the idea of a system for enduro training – and therefor using AMB MX transponders. Anyone tested any other transponders for frequency and compatibility within this decoder project? (Except the ones mentioned in the Specs file.)

I will build the new decoder and try to test with the Tag Heuerer transponder for MX / Formula1

Thor

buy a decoder
 

Ola would like to buy a laptime decoder. Where can I buy one?


[QUOTE = howardcano; 11585837] Eu não vi nenhuma documentação para a AMB (que provavelmente é a marca que você deseja usar) e não sei os detalhes. Pode ser que essas informações sejam fornecidas àqueles que desejam gravar softwares de contagem de colo de PC somente depois de assinarem um Acordo de Não Divulgação (NDA). Mas deve ser possível determinar os dados fornecidos pelo decodificador com alguns testes. Infelizmente, não tenho um decodificador para testar.

Se eu chegar longe o suficiente, uma rota possível para este projeto seria entrar em contato com uma das fontes de software existentes e perguntar se elas podem fornecer informações sobre qualquer um dos decodificadores que o software suporta. Eu acho que a informação não é "protegida" para todas as marcas de decodificadores, especialmente aquelas que foram descontinuadas. Dada essa informação, eu faria este design de decodificador "parecer" como um desses decodificadores para o PC.

Por favor, compartilhe qualquer informação que você encontrar. Ele pode ser bastante útil! [/ QUOTE]
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I know this is a somewhat old thread but I am having some problems with the Cano Decoder system I built for my local club.

It has worked very well for a couple of years but recently has stopped counting reliably. It will still count occasionally but not enough to be able to use it for racing. It does read sometimes so the logical connections RS232 etc seem ok and the software is configured correctly and we have checked connectors and cables for poor connections.

It seems to me that the digital aspects have to be working OK and it could be a failure of an analogue part of the circuit. Can anyone give me some tips as to what might be the area to look at?

coaxial amb my laps
 

Dear, good afternoon, you can tell me what type of coaxial is used in my laps equipment. I am from Argentina and it is impossible for me to buy the original. I await your comments. Cheers!!

Any 75ohm coaxial (tv cable) would work I also tried with 50ohm ham radio cable and work also.