WheelchairDriver

Dynamic has TWO different program interface variants.

One is simple and just requires a RS232 - USB and 3 wires.... the other requires a homebrew electronic interface.

Which one you want depends on the Dynamic model are you wanting to program.

So ...what model of Dynamic are you wishing to program?

Found a post that mentions your model...

I have an Invacare Orion with a Rhino2 control unit DS90

So you need the option recently made by MXDrew .

I can confirm that it is easy to make and works well.

First of all, thanks for the very good help.
What is the value of the first diode at the top?
Thank you very much...

1N4148

You can leave the diode out if you want .... I put one in as a polarity safety measure.

Hello everybody. i have now soldered the board together.
but do not get a connection to the control unit.
In the wizard I see in the status line at the bottom on the right side how
the software queries different ports but no connection is made.
now I have a few more questions ...
1: When I measure the data pin and minus with the oscilloscope,
I get the signals from the control unit which can be seen in the photos. But no signals
From the pc.
2: what should the signals from the laptop look like after the circuit board?
I have the feeling that nothing arrives from the laptop via the circuit board.
I've already swapped tx and rx to see if it works. it doesn't work
3: I measure directly at the rs232 connector pin 3 and minus I see a signal every time the port swapped
i have checked the circuit board several times. everything should be right
4: is it important which usb. rs232 cable i use? actually I should have the right cable because I measure at pin 3 and minus a clean signal which changes as soon as the port is changed by the software.
Thank you very much for your help

You need to use one of these...other types simply do not work.

https://www.amazon.co.uk/gp/product/B0753GY7FR
https://www.amazon.co.uk/gp/product/B079X3SWHV

3: I measure directly at the rs232 connector pin 3 and minus I see a signal every time the port swapped...
4: is it important which usb. rs232 cable i use? actually I should have the right cable because I measure at pin 3 and minus a clean signal which changes as soon as the port is changed by the software.

..Are you trying to use a RS232-USB Cable with a DB9 plug like this? .... If so ,why?.
It isn't shown on the drawing!



The adapter uses TTL level signals.
https://www.sparkfun.com/tutorials/215

Wouldn't that RS232 cable just replace your Red RS232 to USB board you are using woody ?

gcebiker wrote:Wouldn't that RS232 cable just replace your Red RS232 to USB board you are using woody ?

I will attempt to make it clearer... One uses TTL Signal Logic the other uses RS232 signal logic .

TTL serial & RS232 serial are NOT the same or compatible , their high and low signals are the opposite of each other.

THIS Adapter uses TTL serial logic signals .

This method of serial communication is sometimes referred to as TTL serial (transistor-transistor logic). Serial communication at a TTL level will always remain between the limits of 0V and Vcc, which is often 5V or 3.3V. A logic high ('1') is represented by Vcc, while a logic low ('0') is 0V.

THIS adapter uses RS232 SERIAL logic signals

RS-232 (Recommended Standard 232) telecommunications standard. By the RS-232 standard a logic high ('1') is represented by a negative voltage – anywhere from -3 to -25V – while a logic low ('0') transmits a positive voltage that can be anywhere from +3 to +25V. On most PCs these signals swing from -13 to +13V.

gcebiker wrote:Wouldn't that RS232 cable just replace your Red RS232 to USB board you are using woody ?

The board in the pic IS NOT RS232 it is TTL.

It uses a FT232RL Mini USB to TTL Serial Converter Adapter Module 3.3V 5.5V .
E.G. https://www.amazon.co.uk/gp/product/B0753GY7FR

Revised drawing.

woodygb wrote:You need to use one of these...other types simply do not work.

https://www.amazon.co.uk/gp/product/B0753GY7FR
https://www.amazon.co.uk/gp/product/B079X3SWHV

The above boards are the only interface to use. I know as I tried an expensive one I already had and no luck ordered one of the cheap ones and it works every time.

Hi
Ive tried to figure what cable i need to be able to Program the an DR90-a01..

Its for my grand mother she has an used eloped, swapped batteries recently but it still moves a bit slow and she needs to travel a bit, my wish is that it might be possible to get it a little bit faster.. Ive noticed that the engine stop pulling after it has reached the speed 14 km/h. Its just a 400w engine so perhaps it at 100.

Looking at the contactor pins on the controller there is a resistor that i guess is used with the gas handle to limit it. But that cant be all so there must be a software limitation, why limit at exact speed. Downhill it even brakes.

But i dont get if i can just use an rs232 or if i need to do alot of soldering.

Is dr90-a01 a rhino2 controller. Just want get pointed in the correct direction

Was there an modified software aswell?

Thanks

Ive noticed that the engine stop pulling after it has reached the speed 14 km/h. Its just a 400w engine so perhaps it at 100.

The top speed for the Eloped is quoted as "Top speed 15 km / h " ......So ...it is , most likely already at 100%.

But i dont get if i can just use an rs232 or if i need to do alot of soldering.

You will need to do a lot of soldering.

Is dr90-a01 a rhino2 controller.

Yes

Was there an modified software as well?

Yes

Thanks. Yeah… prolly its at it top setting.
But in anycase, That means that what i want to build to Be able to connect is that you have referenced in previous posts? :-)



No one intressed in building or selling a premade or used kit? Sorry if my english arent the greatest, i do try my best.

Thanks.

Daf,

That drawing is correct for the Rhino2.

I could make one for you.... I assume that you are Danish?

Woody

Hi, iam from sweden

That would be awesome, I doubt my soldering and electric camponents skillz;-)

OK.

Price will be £30 plus postage ... postage will ,I think , be around £6 to Sweden.

Payment WHEN I have completed the interface....which should be by the middle of next week.

Great. Thanks. Just pm the details on how you want the transfeer, gotta be quite easy to sort out.
And if i could get a Link to the software ;-)

Check your messages.

Hello,
As Daf I need to setup a dr90-a01 controler.
I already got the software, the OEM dongle, the DWIZ adapter + XL3/Molex 4pins adapter and the USB/RS 232 adapter.
So if I'am right I just miss the RS232 to Hirose plug cable
In order to built it can you confirm this and by the way confirm that :
RS 232 pin 2 goes to pin 2 of Hirose plug
RS 232 pin 3 goes to pin 3 of Hirose plug
RS 232 pin 5 goes to pin 4 of Hirose plug
Thank you

FrenchGuy wrote:Hello,
As Daf I need to setup a dr90-a01 controler.
I already got the software, the OEM dongle, the DWIZ adapter + XL3/Molex 4pins adapter and the USB/RS 232 adapter.
So if I'am right I just miss the RS232 to Hirose plug cable
In order to built it can you confirm this and by the way confirm that :
RS 232 pin 2 goes to pin 2 of Hirose plug
RS 232 pin 3 goes to pin 3 of Hirose plug
RS 232 pin 5 goes to pin 4 of Hirose plug
Thank you

Hi ,

NO

The convention is TX ( Transmit ) talks to RX ( Receive ).

RS 232 pin 2 "listens" to pin 1 of Hirose plug
RS 232 pin 3 " talks" to pin 2 of Hirose plug
RS 232 pin 5 GND goes to pin 4 GND of Hirose plug

JUST USE YOUR RS232 to Hirose plug cable!!!

So ... Connect the RS232 to Hirose plug cable into the RS232 -USB adapter cable...plug this into the DWIZ-ADAPT and finally plug in the MOLEX adapter cable.

Does this make sense?

Thank you for your quick answers..
As I have mention I miss the RS232/Hirose cable
I already test this pinout configuration but with no success.
So far I will try a new USB/RS232 adapter.
Thanks again
PS: I d'ont know if that make sense but if it's work it's ok for me ;-)

Hello...
I have now soldered the circuit board 3 times and checked it x times. but I can't get a connection to the control unit.
When I stand behind the scooter and look at the control unit from above, I use pin 1 GND at the top right and pin 4 DATA at the bottom left ... when I measure between data and GND, I have about 3.7V
I installed this control unit. https://drive.google.com/file/d/16n0a7cN6h_WRnkVGsNW4uY0u7ZzMhV2-/view?usp=sharing
https://drive.google.com/file/d/1FnifVoLdybwTjKONFK-LmLEUv021hr-e/view?usp=sharing
I ordered this Rs232 / TTL converter https://www.ebay.de/itm/293942252350
Do I have to change the settings in the software? The COM port is correct and the data LED on the TTl converter also flashes when the software scans the addresses
What else could I check to find the error? Thank you for your help

Your Google Drive links give an ACCESS DENIED.

The USB - TTL Convertor that you linked to is the correct type... other types simply do not work.

NO SETTINGS NEED ALTERING.

I am unsure about your pin number positions as your description requires me to know which way around your controller is when you are looking at it..

yes i use this plug. I also measure a signal between data and GND with the oszi with 3.7V, but I cannot get a connection to the control unit.
thank you very much for your help...

Kaschperlpropper wrote:yes i use this plug. I also measure a signal between data and GND with the oszi with 3.7V, but I cannot get a connection to the control unit.
thank you very much for your help...

The USB - TTL Convertor that you linked to is the correct type... other types simply do not work.

please try again to look at the pictures in my previous post

Kaschperlpropper wrote:please try again to look at the pictures in my previous post

Your connections appear to be correct.