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Everything posted by aussieslotter

  1. By the way I mentioned the accelerometer idea on SFI back in 2007. Gee that only took 14 years to implement.
  2. Hi Guys, Accelerometers. Scorpius was the first company to specify an accelerometer for the digital slot car industry. We will be the first to market also The MXC6655A 3 axis accelerometer is only 2x2x1mm and is around $1.25AUD. a much better proposition than a 9 axis gyro which is overkill, 4 times the cost and OBSOLETE. For slot cars a 3 axis accelerometer will perfect. Small, cheap and from MIMSIC who lead the industry. Uses: 1: Ghost car. Here the the X axis is monitored and speed reduced as G forces increase. Calibration may be required. Early days. 2: Side impact collision detection for lane changers for use in applying penalties using the Y axis data in the Scorpius Race Management System (SRMS). 3: Front to rear collision detection for use in applying penalties using Y axis data in the SRMS. 4. Impact data collected and used in Damage Simulation for SRMS. Using an addition of all 3 axis. Once you reach a certain level of damage you must pit or retire from the race. All this will be done in car, processed by the powerful nRF52840 CKAA-R chip. And data will be fed into the processor at 100 times per second. The same data will be sent wirelessly to SRMS for use in applying penalties etc. As you can see this is very advanced for the current tech level in the industry.
  3. I must admit one component on a 5mm thick pcb with expert soldering is not only astounding it’s proof of innovation, years of hands on experience and honesty. And only 4 years into it. Quick too.
  4. Hi Guys, Once the decoder is manufactured it’s time for anything hand soldered. In this case it will be 2 LEDs, one phototransistor directly onboard and then various hardware attached to multiple wires. Heres a sneak at progress so far on a diagram. It’s only for the car decoder so far not the Lane Brain for 4 brands. Once the diagram is completed a spread sheet is compiled on the parts for each sub assembly. The idea is to keep costs down that lights and hall sensor are sold additionally. Why pay for something you’re going to cut off and put in storage? The other idea is in the web shop you will be able to customise the decoder any way you want. If you’re purely a Carrera user and SCX driver wires, SSD LED, and Scorpius photo sensor don’t interest you we can remove those. Want lights? We can add those. Want the tacho option we can include the hall sensor. Want the onboard Carrera LED or the fly lead LED? Or both? You choose. Anyway I have been working spec for the various wiring and accessory bits and pieces. Included in the spec hardware variations and associated wiring, AWG, length, conductor material, insulation material, strand dia, number of strands, strip insulation length, tinned or not tinned ends, single wires or pairs? choice of IR LEDS, clear LEDs headlights, red LEDs taillights, photo transistor, hall sensor, wired pair or single, colours, heat shrink, diameter, material type, colour, length, split cores to accomodate?, shrink or not shrink?, part numbers for each, check availability, etc. That’s for each of the sub assemblies x 15. So now to complete the drawings and then the spread sheet.
  5. Scorpius latest skill set is miniaturisation. It’s been a fun challenge, very enjoyable and satisfying. Developing state of the art designs is not cheap. It also devours time and effort. But it pays off. Now more than ever since we are developing the MPD. Here are 3 miniaturisation projects we did in recent times. Pictures below: 1. Wireless Disc Decoder project for Scalextric systems. On hold while we complete the MPD. Design complete. 2. Scorpius Wireless Nano Decoder wiyh world record dimensions of 9.4x5.0mm or 47.00 sq.mm. To give you an idea the worlds previously smallest chip ever manufactured was 325 sq.mm being the Scalextric F1 decoder. The Nano Decoder is 1/7 the size with triple the functionality. Project completed with all firmware completed and tested and programming jig manufacturered. 3. Scorpius Wireless F1 chip 12x8mm with beefed up motor and brake drive circuits. Still under 100 sq.mm and These important projects have just raised the stakes and given us a serious head start on the latest MPD. The new MPD is just 292.60 sq.mm. It has also given us new bootloading and programming experience with the newer Nordic development platforms. In our arsenal of chips specified in designs, prototypes or manufactured include so far: 24L01 51810 52811 52832 52832 WLSCP 52840 WLSCP 53 series is yet another development platform again and would require much effort to learn it.
  6. Hi Guys Some pics showing more detail. Red is side A. Blue is side B.
  7. We have used 41 of the available 73 pins on the 52840 WLSCP chip! For a slot car decoder? And as far as wire to pcb in/out pins on the new decoder we have an 26 pins all up! In fact around the perimeter there is maybe room for 1 more pin only. We have really maxed out everything. So let’s see: 2 pins Power in 2 pins Motor Drive 2 pins Aux Motor Drive 1 pin Antenna 3 pins Hall Sensor 2 pins Carrera on board LED 2 pins Carrera LED on flylead 2 pins Scalextric Sports Digital onboard LED 2 pins Scalextric Sport Digital on Flylead 2 pins Onboard Photo Sensor (Scorpius lane change) 2 pins Photo Sensor on flylead (Scorpius lane change) 2 pins Headlights 2 pins Tailights That’s around 38 solder points!
  8. Hi Guys, Ok so hardware design took 3 man days spread over the last few weeks. A lot of that was spent researching materials, replacements for parts not available due to world shortage on some important lines and availability of the entire BOM. Monday we start the production files and design a new programming jig pcb (only way to go) that will accurately guide the 3 pins exactly to their target +or -0.1mm. The jig must be robust and professionally built as it will be sent to the factory in Taiwan for use eventually on the first production run. I think I will order 20 maybe 30 of these beauties. These unfortunately will have to be programmed and wires/LEDs/PTs soldered all by hand. Next I’ll start integrating our own app rather then the Nordic app for upgrading .That should be fun. Luckily it is something we have had completed successfully in another wireless project I’m involved with. So it’s well tested and works flawlessly. Rick
  9. So how’s 22.00x13.30mm? That’s just 292.6sq.mm! How does the worlds most functional decoder (by a factor of 5 at least) also be the second smallest? The Scorpius Nano Decoder is the smallest of them all at just 47sq.mm. However it doesn’t have any fancy hardware. This decoder acts as a car decoder for 5 brands, as a lane changer decoder for 6 brands, as a lapcounter for 5 brands, (Using our own Scorpius Race Management System), as an anti collision device for 5 brands, and finally as a location detector for 5 brands. Don’t forget also it has built in full function lights. So 21 products all up in one that can change identity in 30 seconds flat using our app off the phone. And just 292.6sq.mm. Scorpius.... industry development leaders since 2007. Pictures showing both sides of the latest Scorpius MPD just 22.00x13.30mm.
  10. Bud the last post was 8 years ago.
  11. So how small can we make this decoder. Previously we had it at 26x13, then revised it and added an extra photo transistor circuit, a couple of zener diodes, a solenoid driver circuit and a few other components and got it kept it at an amazing 26x13. Just had an email from John. He may be able to get it down to 25, 24 or perhaps even 23mm in length. Or 299 sqmm So I wonder what John can achieve?
  12. .....Are you saying you need to do 4 years of Uni, consult, lecture and have a lab in Japan to make a light connection board and maybe upgrade a resistor or say cut a certain colour wire Ade?
  13. MPD FEATURE LIST Multipurpose. Can be used as car decoder, lane changer driver, pit detector or lap counter for 5 brands Small 26.00x13.00mm size. Scorpius compatible Carrera full car decoder compatibility. Scalextric Sport Digital full car decoder compatibility. SCX car decoder compatible if using Scorpius controller. Ninco car decoder Compatible if using Scorpius controller. Runs on AC or DC systems. Runs on 8.5-18V. Uses Nordics nRF 52840 WLSCP chip. Dual radio output. RF (using Scorpius protocols) and BLE (Bluetooth low energy, ie phone connection app). App featuring virtual dashboard and wireless updating and configuration set up pages. 2 LED output channels, each channel with an onboard mounted 3mm dia. IR LED for DPR hatch use (Scalextric and Pioneer cars only) and another LED mounted on 75mm flylead. When configured as car decoder one channel represents Carrera and the second channel represents Scalextric Sport Digital. When configured as a lane changer the decoder becomes a Scorpius Lane Brain lane changer controller. 2 Photo transistor input channels, each channel with onboard mounted 3mm dia. photo transistor (sensor) for DPR hatch use (Scalextric and Pioneer cars only) and another photo transistor mounted on 75mm flylead. When configured as car decoder one channel represents Carrera and the second channel represents Scalextric Sport Digital. When configured as a lane changer you can choose either Carrera or Scalextric Sport Digital. Powerful 10A motor drive. Powerful 8.8A brake drive. Solenoid driver for SCX 3A. Headlights, high beam, low beam, on/off, controllable from Scorpius controller. Clear 3mm LEDs. Tail lights/brake lights. Red 3mm dia. LEDs. Back EMF detection for traction control and future diagnostic programs. Accelerometer with gyro for use in a proposed ghost car project and front to rear collision detection. Hall sensor to sense motor revolutions (tachometer). SCX plunger solenoid driver, 3A. JST plug connection for power in/out, lights and hall sensor. Custom DPR hatch available to suit Scalextric and Pioneer cars. Programmable race line for Scorpius, Scalextric Sport Digital and Carrera digital systems if using Scorpius lane changer electronics. Rick
  14. Sneak peek at work in progress on version 4 of the MPD. The previous version was 26.00x13.00mm On this version I have added: 1.Additional photo transistor on flylead on seperate input for Scalextric Sport Digital lane changer electronics with anti collision and wireless telemetry. 2.Additional LED on its own input for SCX compatibility. 3.Additional motor drive circuit for SCX plunger or solenoid a second lane changer solenoid ie double lane changer or lane changer with moving exit flipper 4. Beefed up motor circuit. 5. Additional EMF protection power in. 6. Additional EMF protection power out. 7. More advanced and smaller processor. And the size is very similar at 26.00x13.30mm! Yet again amazing work from John and we are now seeing the benefits of knowledge gained from the Nano decoder which measures only 9.4x5.0mm. Leads for hall sensor, front and rear lights and power in/out will have mini jst plugs on flyleads.
  15. Interesting story Mark. You know it’s affecting the public when Mustang production in the US is frozen while they wait for chips. People losing jobs because of supply issues. Etc. Rick
  16. Worldwide shortage on microprocessors is getting worse with up to 8 month wait on Nordic chips. But I know a little birdy at Nordic to secure these babies. NRF52840-CKAA-R Without these chips the project is frozen so we are grateful. Thanks Wendell at Nordic.
  17. Only if it’s not true Mr Munter Thanks Ade much appreciated
  18. Hi Guys, Schematics updated for MPD V4.0. Better motor drive circuit, more protection for EMF for braid side and motor side, another photo sensor circuit, another motor drive circuit, smaller more powerful chip. As far as I know this is the first time a Nordic 52840 WLCSP, just 3.5x3.6mm has been used in any slot car product. Next stage PCB design.
  19. Neighbour just picked this up only 500 made. 912 GT2 RS with factory cage and lots of carbon. Nuburgring record holder for a production car.
  20. Scorpius MPD prototype Version 4.0 upgrade list. Hi guys, This project would be the most complexed and advanced project ever undertaken for the digital slot car industry. And yes we are up to Version 4 prototype. The MPD or Multi Protocol Decoder will be the basis for over 24 products. Car decoder for 5 brands, lane changer for 5 brands, location detector for 5 brands, anti collision board for 5 brands. Wireless dongle for 2 brands. Wireless throttle board for 1 brand. A mini wireless analog module for 1 brand. SOC: NRF52832 upgraded to NRF52840. We need an additional UART for an additional phototransistor circuit. SOC nRF 52832 only has one UART so we have upgraded to nRF 52840. Trade off is its 13 sqmm bigger and costs a bit more. DPR attachment holes: Removed. 3D printed clip in system DPR to be utilised. Pin system found to take too much space and fiddly. Track Rectifier: 4 off PMEG3050EP,115 Schottky Diodes 30V 5A Track Transient Protection: SMF4L18CA TVS 20V Breakdown 400W peak pulse suppression (18V max track voltage recommended) Motor Drive: Now CSD17318Q2 N-channel MOSFET 30V 20mOhm @ 3.3V 10A plus revised circuitry. Motor Brake: Now PMPB27EP,115 P-channel MOSFET 30V 30mOhm @ 6V 8.8A Motor Transient Protection: SMF4L18CA TVS 20V Breakdown 400W peak pulse suppression Track Current Sensing: Now 33mOhm Resistor and Amplifier (detects motor current) Motor Back-EMF Sensing: Resistive dividers to analog inputs. Revised circuitry. Solenoid Driver SCX: AO6604 20V 3.4A Additional phototransitor for LB detection: allows for 1 and board or 1 on flylead. Headlight: 20mA constant current drive, PWM for high/low beam (allows up to 4 LEDs connected in series off board) Tail/Stoplight: 20mA constant current drive, PWM for tail/stop (allows up to 4 LEDs connected in series off board) SSD ID LED: 10mA constant current drive (allows up to 2 LEDs connected in series, 1 on board, 1 off board) Carrera ID LED: 10mA constant current drive (allows up to 2 LEDs connected in series, 1 on board, 1 off board) 3D Accelerometer: Gyro upgraded to 9 axis Work continues on the version 4 board design which has some massive changes. The extra time taken to complete the project has given us valuable insight and allow these changes to occur, instead of rushing to market, especially in regards to multi brand compatibility and multi purposing. There is a extreme amount of complex firmware to be written. And this of course where the men are sorted from the sheep. Pretty soon all you will need is a Scorpius controller, Scorpius dongle and Scorpius MPDs to do just about any task possible in regard to digital slot car racing. Possibilities vary of course with regard to different brands. Picture: Decoder quick release DPR hatch for Scalextric and Pioneer slot cars. Design by Scorpius. Rick
  21. The theory: LEDs can only only be 0.1mm out of alignment. The proof: Full and reliable ID6 counting at 6.25 m/s approx at 1.5mm out of alignment. The new narrative: Yes my theory aligns perfectly with your proof. The facts: The system works perfectly at 0.1mm out of alignment. In fact up to 1.5mm regardless of the changed narrative .
  22. Next set of tests Carrera and SCX Advance. Theory is identical to SSD cars but first we need to install Scorpius LB with speed test software to prove car speed in m/s. Seeing no other chip on earth can do this I will be installing Scorpius chip in car alongside SSD chip which will count laps. Or I can use the Scorpius chip as it can count laps for Scorpius and SSD simultaneously. No other chip can do this either. It seems someone has changed their mind and now agrees with my video. Lots of fun.
  23. Next test is debunking the notion of any more than 6 car IDs on Scalextric Sport Digital. Apart from the fact the existing Hornby firmware simply doesn’t allow it due to the checksum requirement built in the mark space ratio technique doesn’t like speeds over 3m/s for ID 7, and car ID 8 over 1 m/s. The statement by one particular hobbyist says it can be done using standard Scalextric lap counters and lane changers with only firmware changes to the car chip. Although this has never been tested, documented or proved in any way. Of course you can add multiple sensors to the lapcounter (hardware upgrade) however this is an admission that in fact it CANNOT be done using firmware. Then you still have the checksum issue. This was tested by 4 different development teams well over a decade ago and nothing has changed in the Hornby product to revisit this. So hardware and firmware changes both cannot achieve more than 6 car IDs without making the entire system a standalone system. The mark space ratio technique is very old and very limited. It’s ability to send only 6 car IDs pales into oblivion when compared to the Scorpius technique. With Scorpius we can send 1000 car IDs effortlessly if required, of course any more than 24 is not necessary. On top of that we can send much much more information such as which lane the car is in, which sector, motor speed from 0-255 steps, braking 0-255 steps, wether the lane change button is being used, and soon G Force readings in X, Y and Z axis (more than 3 is not required), back EMF readings and even a proper tacho which will be achieved by placing a hall sensor on the motor. Now compare this to only 6 cad IDs. The hardware is already here. And work resumes on the Scorpius Gen 2 chip now known as Scorpius MPD (multi protocol or multi purpose decoder. We have already programmed it with 128 SSD car IDs ready to test in coming weeks. So repeating it is not possible nor possible in the future to have more than 6 car IDs even though a $1000AUD reward was offered online if anyone could prove it. Two years later no has claimed it. I wonder why?
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