BrickTronic
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Posts posted by BrickTronic
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4 hours ago, MisterCreators Custom MOCs said:I now tested everything again and built a small testing rig, to make sure that it's nothing wrong with my RC Box. But same as before, the servo still only turns all the way to the left or to the right, no proportional steering possible. I used an 2S lipo to make sure that I'm not overvolting my servo.
Hello,
When Lego-Servo is working with Lego-IR-Rempte, then PWM of the IR-Remote should be OK
In an Youtube-Video (Time-Stamp 0:45) you can find Measured this PWM.
There are 3,5 sections of 250us resulting in a PWM-Period of 875us that is about 1,14kHzWhen you System is using higher Frequency, then the Servo has Problems getting the right %-Value
Jo -
2 hours ago, NoEXIST said:Not sure, but C1 and C2 are just to power electronics used in servos and PF receivers. As I know they don't work exactly the same as regular motor contacts do
Hello,
PF-Receiver and Lego-Servo are powered by GND/0V and 9V Pins of the Power-Function connector.
See here again Picture from Philo :
Signals on C1 and C2 at Servo define Direction and Angle
A simple H-Bridge-Driver (that is inside the Power-Function IR Remote Receiver) that usually control an DC-Motor can generate this Sinals for the ServoJo
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11 hours ago, MisterCreators Custom MOCs said:Yes I did, but the servos don't understand the PWM signal the ESCs put out. So for now servos can not be controlled proportional, but they can be controlled left or right (-90°, 0°, 90° only these 3 positions and nothing in between)
Hello,
Your Statement is valid for many cheap chineese Servo-Clones
Beside "Center" the Lego Servo support 7 Positions to the Left and 7 Positions to the Right.
In total 15 Positions.Unfortunately Lego uses not the "usual" Servo-Control (20ms Periode and 1,0 to 2,0ms High.
Center is 1,5ms and +/-0,5ms for Left/Right (depend on Servo if this result in +/- 270° angle or only +/- 90°)Lego drive C1 = 0 and C2 0 to 100% PWM
or C2 = 0 and C1 0 to 100% PWMIn an Youtube-Video (time-Stamp 0:52) you can see an opened Lego-Servo and the 15 Positions for Position-Control/Regulation
Jo
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18 hours ago, MisterCreators Custom MOCs said:... The Dual Channel configuration allows to control two motors separately over one PowerFunctions Connector. .....
Hello,
I assume, your PF-Adapter wires GND from Bottom to C1 on Top and 9V (BAT+) from Bottom to C2 omn Top, right ?
I've borrowed from Philo's Page :
So your RC-Box put PWM (lets call them C3 & C4) to the PF-Connector instead GND & 9V.
Does you conform ?I would be interested, why your Box is so high ?
What is inside ?Jo
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21 hours ago, Lok24 said:or all together ;-) Perhaps @TexasEngineer454 should open a new thread and ask for others to add lists like that:
42099 4x4 X-treme Off-Roader Port A XL front drive white Port B XL rear drive red Port C L steering blueHub System ID Set Port Ids ---------------------------------------------------------------------------------------------------- Control+ Control+ 0x80 42099 4x4 Offroader A 0x2F XL-Motor (white) “Drive Front“ B 0x2F XL-Motor (red) “Drive Rear“ C 0x2E L-Motor (blue) “Stearing“ D - 42100 Liebherr A Top : 0x2F XL-Motor (red) “Arm“ Bot : 0x2F XL-Motor (red) “Chain Left“ B Top : 0x2E L-Motor (yellow) “Stem“ Bot : 0x2F XL-Motor (yellow) “Chain Right“ C Top : 0x2E L-Motor (blue) “Bocket Tilt“ Bot : - D Top : 0x2E L-Motor (green) “Bucket Open“ Bot : 0x2E L-Motor (green) “Rotate“ 42109 Top Gear Car A - B 0x2E L-Motor (red) “Steering“ C - D 0x2F XL-Motor (yellow) “Drive“ 42114 6x6 Volvo Hauler A 0x2F XL-Motor (blue) “Drive / Tilt“ B 0x2E L-Motor (green) “Gear-Box“ C - D 0x4B L-Angular (orange) “Steering“ 42124 Offroad Buggy A - B 0x2E L-Motor (-) “Steering“ C 0x2E L-Motor (-) “Dive“ D - 42129 Zetros A 0x2E L-Motor (blue) “Drive 1“ B 0x2E L-Motor (red) “Drive 2“ C 0x01 M-Motor (green) “Differentisl Lock“ D 0x2E L-Motor (white) “Steering“ 42131 Cat D11 Bulldozer A 0x4B L-Angular (red) “Chain Left“ B 0x4B L-Angular (yellow) “Chain Right“ C 0x2E L-Motor (green) “Blade- Lift/Tilt / Gripper-Lift / Stair“ D 0x2E L-Motor (blue) “Gear-Box“ 42140 Transformation Vehicle A 0x2E L-Motor (violet) “Chain B“ B 0x2E L-Motor (teal) “Chain A“ C - D - -
2 hours ago, AVCampos said:The easiest solution for TLG would be to make an "analogue" version of the train controller, something in the lines of MK's 6-way controller. Then it'd just be a matter of Pybricks in the hub interpreting the inputs as needed.
...Hello,
Does anybody know what is inside thie MK 6-chanel Remotge ?
Can the used uC be replaced by another uC suporting Microphyton and therefore also Phybricks ?
An Arduino Nano BLE 33 with the NRF52840 would be such an candidate in my eyes.
Jo
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2 hours ago, Toastie said:...
As I could nowhere find schematics for the 9771 Lego Interface 1 ISA bus card
...
If not found anywhere else, I'll post the 9771 schematics here.
Best
ThorstenHello,
9771 Schematic was reverse engineered hereAnd you can control the Interface "A" also by your parallel LPT Port
Jo
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On 11/20/2022 at 2:10 PM, Toastie said:...
Here you go:
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This document (PDF) may be a matching datasheet - it is from Toshiba, from 1999, it covers 8-bit microcontrollers, and it has an onboard LCD driver. But who knows, TLG is always making big secrets about their electronic chippies:
https://brickshelf.com/gallery/ThorstenB/ThisAndThat/SCOUT/tmp86cm29u.txt
(You need to rename the .txt extension to .pdf - Brickshelf does not like PDFs to be uploaded).
Best regards,
ThorstenHello,
@Toastie : Again many Thanks.
The Data-sheet might be an Delta Data-Sheet.
Big surprise that it has 10-bit ADCI digged a little bit and found a Data-Sheet for TMP86CH29BUG
My conclusin on this ans some other similar documents is :
QuoteTLCS-870/C Series
based on Intel 8080 (/ Zilog Z80) Registers
TMP86CM29_U_
!! !!!
!! !!+-- G : tbd
!! !! B : tbd, Emulation Chip
!! !! : no feature
!! !!
!! !+--- U : PQFP64 0,5mm Pitch
!! ! F : PQFP64 0,8mm Pitch
!! ! X : Bond-Out Chip, Emulation Chip
!! !
!! +---- A : tbd, Emulation Chip
!! L : Low-Voltage, max 3,3V instead 5V
!! B : tbd
!! : no feature
!!
!+------- M : 32k
! H : 16k
! 8 : 8k
! 9 : external, Emulation chip TMP86C929AXB
! 4 : 4k
!
+-------- C : Mask
F : Flash
P : OTPSo Linked more detailed Data-Sheet might fit.
Jo
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5 hours ago, Toastie said:Hello Jo,
now, if it is important to you, I can remove the LCD from a "broken" SCOUT and take a shot.
You probably know this website as well: https://brickipedia.fandom.com/wiki/Mindstorms_RCX#Scout
At least we learn it is a Motorola microcontroller with so-and-so much RAM/ROM.
Just let me know.
Best,
ThorstenHello Toastie,
Thaks for your proposal, I'll be happy to get more Details here.
The Bricjpedia-Page mentiones a Toshiba uC with 32k (Mask-) ROM and 1K RAM
Would be nice to figure out what Processor exactly and maybe to find its Data-Sheet
I'm asking myself, if there is also an LCD Controller used like in the RCX
Jo -
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On 11/2/2022 at 5:10 AM, dr_spock said:...
...
Hello,
Is it possinle to make closeup pictures from the Scout PCB Assembly Top & Bottom View ?
Jo -
On 10/21/2022 at 11:30 AM, Pybricks said:...
We've figured it out -- we've been doing this for a while.
....
Using their improved file format of compiled programs,...
Hello,
I tried to find out how mpy compiling is working but failed.
What for example would mean :
What I (think to) get till now :
@Pybricks : what is wrong im my understanding ?
Jo -
21 hours ago, aFrInaTi0n said:I just recognized the antenna for the buwizz two is on one side?! Thought this would be on the main horizontal pcb...
...Hello
There is a Tear-Down Youtube-Video by GreenGecko of the BuWizz2 available.
But the Antenna is not where it is in your picture.
@Zerobricks are there different Versions of the Buwizz2 and what are the (Hardware) differences (obviously the Antenna)For the Buwizz3 Sariel did a Tear-Down Youtube-Video
Here the Antenna seems to be a stamped metalic partJo
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22 hours ago, joeh said:@BrickTronic See attached table for device mode mappings performed by our Adapter board.
Thanks,
Your Table helped a lot to understand.
I assume, that EV3 Device communicates with UART "A" of ESP8266 and PoweredUp is connected to an UART "B", right ?
But at attached Motor there are the Encoder-Signals on UART "A" and TxD must then also be an Input.
A Schematic diagram would be very helpfull to can understand how this is solved (does ESP8266 have a Time- Capture & Compare Funconality also on this UART "A" ? Does this Cap-Com Trigger react also on rising and folling edges ? Or must you do Bit-Bang for this function ?
Jo
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6 hours ago, joeh said:>>> In the MCU processing, there are in fact two different threads running. One side emulates the EV3 hub to work with EV3 device. The other side will emulate a Spike Prime device (with the equivalent ID) to work with the spike prime hub.
>>> It emulates a Spike Prime Pressure force sensor.
>>> It emulates a Spike Prime Color Sensor. See here for details: https://www.qikeasy.com/infrared-sensor/
Hello,
Is it possible to publish more Datails on this emulation ?
I've tried to bring this into the following unconfirmed Table :
EV3 : emulated Spike/Inventor Devive UART ID Mode Device UART ID Mode Remark Touch analog - Touch 0x3F tbd Mode 0x00 to 0x06, maybe 0x01 used ? Color 0x1D 0x00 Reflect Color 0x3D tbd Mode 0x00 to 0x09, maybe Mode 0x01 ? 0x01 Ambient tbd Mode 0x00 to 0x09, maybe Mode 0x02 ? 0x02 Color tbd Mode 0x00 to 0x09, maybe Mode 0x00 ? 0x03 Ref-Raw tbd 0x04 RGB-Raw tbd 0x05 Col-Cal tbd IR-Seeker 0x21 0x00 Prox Color 0x3D tbd 0x01 Seek tbd 0x02 Remote tbd Mode 0x00 to 0x09, maybe Mode 0x02 ? 0x03 Remote-A tbd 0x04 Seek-Alternate tbd 0x05 IR-Cal tbd Ultrasonic 0x1E 0x00 Cont Dist cm Ultrasonic 0x3D tbd Mode 0x00 to 0x08, maybe Mode 0x00 or 0x01 ? 0x01 Cont Dist Inch tbd 0x02 Listen tbd Mode 0x00 to 0x08, maybe Mode 0x03 ? 0x03 Single Dist cm tbd Mode 0x00 to 0x08, maybe Mode 0x02 ? 0x04 Single Dist Inch tbd 0x05 Cont Dist cm Alt tbd 0x06 Cont Dist Inch Alt tbd Gyro 0x20 0x00 Gyro-Angle Ultrasonic 0x3D tbd 0x01 Gyro-Rate tbd 0x02 Fast-Raw tbd 0x03 Gyro-Rate&Angle tbd Mode 0x00 to 0x08, maybe Mode 0x00, 0x01 or 0x02 ? 0x04 Cal tbd 0x05 Tilt-Rate tbd Mode 0x00 to 0x08, maybe Mode 0x01 ? 0x06 Tilt-Angle tbd Mode 0x00 to 0x08, maybe Mode 0x04 ? Large Motor analog - tbd tbd tbd what Spike-Prime Motor ID used ? 0x30, 0x31, 0x41, 0x4B or 0x4C Medium Motor analog - tbd tbd tbd what Spike-Prime Motor ID used ? 0x30, 0x31, 0x41, 0x4B or 0x4C How Access EV3-Sensor Modes not "translated" ? What is delivered when accessing PoweredUp-Sensor Modes not used for translation ?Jo
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8 hours ago, joeh said:... do protocol level translation so that the EV3 sensors will be recognized as Spike Prime sensors. ...
The board is powered by an ESP8266 MCU. As such, even EV3 motors work with this board.Hello,
Inreresting module.
But I can not see the 6pin Cable to the HUB with its connector.
What does you use here and why is it not visible ?What was the reason to use an ESP8266 ?
For what does you need WLAN/WIFI ?What happens if you plug in NXT Sensors/Motor ?
How did you translate the EV3 UART IDs to PoweredUp-ID numbers ?
You also listed the analog EV3 Touch Sensors. How ist it reported to the Hub ?How is translated the IR-Sensor to the Hub ?
Jo
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14 hours ago, Phondly said:Hi,
Sorry, this will be a commercial product, ...
Hello,
Does you plan to use a injection-mold housing or still a 3D-printed case for the comercial version ?
How many orders does you expect, that a molding-tool would make sense ?Unfortunately I was not able to contact you via your Web-Page.
For a comercial Product this and an Impressum should be availableJo
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Hello,
This EnBo sounds promissing.
What components are used inside (charger, DC-DC) ?
Are there availabe pictures of the Top- & Bottom- PCB Assmbly ?A schematic diagram would be great.
Jo
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Hello,
Who has this Tiles and is willing to scan them and share the readouts :
3068bpb1883., 3068bpb1910, 3068bpb1914, 3068bpb1918 & 3068bpb1911 ?
Maybe by using Pybricks-Code Web-Page and the Mario/Lugi Bricks at Port 1 (Sensor-Type 0x49) Mode 0 (see here)
Jo -
On 2/20/2022 at 4:14 PM, fotoopa said:...
...
Update: Just tested the motor and there the CMD is:
5C 23 00 10 20 30 00 00 00 80
Frans.
Hello,
Unfortunately Lego did a poor Job on Documentation.
The BLE/GATT Profile is long time outdated and has big gaps.
The UART Protocol is fully undocumented by LEGO and that what is
available is Reverese-Engineering from Fans like Philo.About the UART Messages :
0x4C 0x20 0x00 0x93 0x4C -> 01001100b where 01 is a Command-Message 001 is 2^1 = 2 Data-Byte 100 is Command "Write to Sensor/Motor" 0x20 0x00 are the Data-Bytes that has to be "Written"to the Sensor/Moror 0x93 XOR Checksum 1. Data-Byte : 0x20 is the Sub-Command to set the Mode-Combining 2 is the Comand itself (there is told, that the EV3 Gyro knows also 0x11 and/ot 0x88) 0 specify how much Modes has to be combined and mapped Zero mean, that a previous Mode-Combining is removed 2. Data-Byte : 0x00 not confirmed, but maybe Specify the Mapping for Mode 0, starting at 1st Data-Element 0 identify the Mode itself to be used for Mapping 0 identify the Index-Element Data in the Mode --------------------------------------------------------------------------------------- 0x43 0x00 0xBC 0x43 -> 01000011b where 01 is a Command-Message 000 is 2^0 = 1 Data-Byte 011 is Command "Select Mode" 0x00 is the Data-Bytes to which the Sensor/Moror has to switch 0xBC XOR Checksum --------------------------------------------------------------------------------------- 0x02 -> 00000010b where 00 is a System-Message 000 always 0 because System-Commands does not have Data and Checksum There is only 1 exception for future extensions 010 is soecify the Not-Acknowledge (NACK) that is used to detect a Timeout in UART-Communication (Watchdog) --------------------------------------------------------------------------------------- 0x5C 0x25 0x00 0x10 0x00 0x50 0x51 0x52 0x00 0xC5 0x5C -> 01011100b where 01 is a Command-Message 011 is 2^3 = 8 Data-Byte 100 is Command "Write to Sensor/Motor" 1. Data-Byte : 0x25 there has to be mapped 5 Data (Data can be Byte, Word, Lomg or Float) 2. Data-Byte : 0x00 map Combined-Mode to Mode 0 3. to 7. Byte specifies the sequence of Data in the Combined-Mode 0x10 Mode 1, Data[0] : Reflect [1x Byte] 0x00 Mode 0, Data[0] : Color [1x Byte] 0x50 Mode 5, Data[0] : RGBI [4x Wprd], so Index 0 mean 1. Value that might be "Red" 0x51 Mode 5, Data[1] : RGBI [4x Wprd], so Index 1 mean 2. Value that might be "Green" 0x52 Mode 5, Data[2] : RGBI [4x Wprd], so Index 2 mean 3. Value that might be "Blue" 8. Byte 0x00 used for Padding 0x93 XOR Checksum Note, that the 4. Word (Index 3) of Mode 5 is skipped (Intensity) --------------------------------------------------------------------------------------- Would be interesting what Modes the Force-Sensor would combine. --------------------------------------------------------------------------------------- The allowed Modes for Combining of the Ultrasonic Distance Sensor is unknown or maybe not sent during the Init-sequence because not available --------------------------------------------------------------------------------------- 0x5C 0x23 0x00 0x10 0x20 0x30 0x00 0x00 0x00 0x80 0x5C -> 01011100b where 01 is a Command-Message 011 is 2^3 = 8 Data-Byte 100 is Command "Write to Sensor/Motor" 1. Data-Byte : 0x23 there has to be mapped 3 Data (Data can be Byte (8-Bit), Word (16-Bit), Lomg (32-Bit) or Float (32-Bit)) 2. Data-Byte : 0x00 map Combined-Mode to Mode 0 3. to 5. Byte specifies the sequence of Data in the Combined-Mode 0x10 Mode 1, Data[0] : Speed [1x Byte] 0x20 Mode 2, Data[0] : Pos [1x Long] 0x30 Mode 3, Data[0] : APos [1x Word] 6. to 8. Byte 0x00 used for Padding 0x80 XOR Checksum
Jo -
Hello,
Color-Sensor :
The 16-Bit Values "Red", "Green" Blue" might be :
fraction of RGBI (4x 16-Bit Raw-Values Mode 5) or HSV (3x 16-Bit Raw-Values Mode 6),
but your observed Values are strange for HSVAlso strange that according to Sensor Init-Data all 3 HSV RAW Values should
be in Range 0 to 360° but Saturation and Intensity are according the HSV-Model
in Ranhe 0 to 100%To can clarify what exacly is mapped, there has to be evaluated the Write-Command
(0x54 with 4 Data or 0x5C with 8 Data) from Hub to Sensor that issues Mode-Combining
Force-Sensor :The 16-Bit "ForceA" could be :
ForceRaw (1x 16-Bit Raw Value Mode 4) or ForcePeakRaw (1x 16-Bit Raw Value Mode 5)Again here, to clarify what is really mapped, can only be clarified when
evaluating the Write-Command (0x54 or 0x5C).Your FPGA is able to also read Data on TXD-Line (Pin 5) from Hub to Sensor.
Can you do a record of this TXD-Data starting after switch over to 115200Bd
or trigger on 0x54 or 0x5C on TXD Line to evaluate the Combine-Mode Data
Jo -
Hello,
At Bricklink there is listed Tile 3068bpb1883.
when you zoom the Picture, you will notice that there is no Green-Red Start Pattern.
Seems to happen also at 3068bpb1910, 3068bpb1914, 3068bpb1918 & 3068bpb1911
Has anybody more informations about this ?
Jo
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4 hours ago, fotoopa said:...
Example of reading out the Lego Mindstorms color sensor on the PC. Now 4 values are read out: Light, red, green, and blue color. The RGB values have a range up to 1023, the light value up to about 2660. If there is no object in the picture, the RGB values are just above 0, the light value is -255, so lower than zero.
...
Frans.
Hello,
Does you have records of the TXD-Line (Hub to Sensor) just before observed Values are starting (after initiialisation) ?
I think you will get Mode-Combined Data (Mode 6 + 1 + 0) -> 3x Word with HSV Color-Data followed
by 1-Byte Ambient-Light (max 100% -> 0x64) and finaly the Color-Index (max 10 -> 0x0A) that would explain
the strange max limit of 2660 (0xA64 -> 0x64 0x0A with least significant Byte first)I would expect a Mode-Combining-Command similar to :
0x54 0x23 0x00 0x60 0x10 0x07 or
0x5C 0x23 0x00 0x60 0x10 0x00 0x00 0x00 0x00 0x0F
Jo -
3 hours ago, fotoopa said:In the meantime, I have done a lot of measurements with the Lego Mindstorms 51515
...
Frans.
Hello,
More Info on the UART Protocol you can find here : https://github.com/pybricks/technical-info/blob/master/uart-protocol.md
and also here
Frame 52 00 C2 01 00 6E is the Comand "Speed" with the 32-Bit Valie for the UART Speed of 115200Bd. 6E is the XOR Checksum.
Jo
Native Xbox controller support for LEGO hubs by Pybricks
in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Posted
Or look at Philo
Jo