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Noted. Thanks, Paul!

Hi guys, The Teensy docs warn that the 3.3V output is limited to 250mA. Looking at the regulator's datasheet, the total output is 1A. Is the 250mA due to a conservative current reserve for the CPU, or a worst case scenario if connected to 500mA capable USB? Thermals? Different reason? What I'd...

Just wanted to confirm that the MAX3051 transceivers work okay with Flexcan. Can't say yet what could be wrong with nut's setup. #include <FlexCAN_T4.h> FlexCAN_T4<CAN2, RX_SIZE_256, TX_SIZE_16> canbus; CAN_message_t msg; void setup(void) { pinMode(2, OUTPUT); digitalWrite(2, LOW)...

It's a "passive" component, a control joystick for the entertainment console. I do think it makes sense to keep-alive as it has no other way of knowing the state of the car (permanent 12V, gnd, CAN). I don't have access to the car right now to confirm, but in some other cars I've dealt with, a...

Hi everyone. I'm trying to read the CAN data from an automotive part, which is going fine, but I have one weird finding. Every 6 seconds or so, the CAN data stream stops for about 1 second. I don't think this is standard behavior, I think the CAN controller may be restarting. I can see a slight...

@alecxs Have a look here https://www.tindie.com/products/fusion/dual-can-bus-adapter-for-teensy-40-41/

The same happened to me with an Adafruit RFID breakout (Mouser pn 485-364). The email stated "Unfortunately, the item on your purchase order has export restrictions imposed by the US Government and we are unable to ship this item to you, the CCATS and 740 license information that allows us to...

I 've posted my CAN board on Tindie for anyone interested. https://www.tindie.com/products/fusion/dual-can-bus-adapter-for-teensy-40-41/

While browsing this thread I have seen someone working with MS. https://forum.pjrc.com/threads/56035-FlexCAN_T4-FlexCAN-for-Teensy-4?p=231492&highlight=Megasquirt#post231492

First loop FIFO Disabled Mailboxes: MB0 code: RX_EMPTY (Standard Frame) MB1 code: RX_EMPTY (Standard Frame) MB2 code: RX_EMPTY (Standard Frame) MB3 code: RX_EMPTY (Standard Frame) MB4 code: RX_EMPTY (Extended Frame) MB5 code: RX_EMPTY (Extended Frame) MB6 code: RX_EMPTY (Extended...

Unfortunately not. All I can say is that I'm measuring 2.05ish volts on the L and H pins.

I wasn't expecting any problems. I have long-term experience with the SN65HVD230D chips and they're flawless. Here's my setup. This is a custom PCB I made, which has dual TCAN330's. There are pins to pull SHDN/SILENT modes high or low (Teensy pins 2, 3). The board has a jumper pad that should be...

@tonton81 Mind if I send you a TCAN330 board? I created a non-FD board and am having trouble getting it to work, unsure why. I read in this thread that I'm not alone.

Is FD only available on 30/31 or can it be MUXed to physical pins 0/1, 22/23?

Hi Tony, Paul (maker of the DualCAN board) here. Got your email and haven't had much time to go through this thread, until now. Impressive work on the library! Can't wait to try it out.

Glad to help :)

Hi! Just got your email. You may want to try https://github.com/pawelsky/FlexCAN_Library which allows you to choose which CAN port you want to use. This should be the FlexCAN library fork that is included with Teensyduino, but I'm not 100% sure, although the on in Teensy Examples also allows...

Sorry I missed your previous message. You should get a lock within two minutes or so, under good conditions (outside or window sill, fair weather). It is hard to say what could be causing the delay as there is no feedback from the antenna other, than the signal itself. If you choose to use an...

Awesome! Yep there might be slight deviations between positions, but that usually settles down the more sattelites get locked.

No problem :)

Have you had a look at the pics on the product pages? I'm not sure how you'd get near the reset button, although you could move the whole board down of course (you might not want to pull the needed current from pins other than dedicated 3.3V pin as pictured). There is really no universal way...

Thanks for the explanation. I figured they're not bound to any standard, but inerested in how CRCs work.

My question came out unclear. The message that I'm sending to serial (in my quote above) is actually just a repetition of the incoming message that I'm sniffing on a device's UART. I wired the Teensy as a man-in-the-middle to listen and only allow the message to flow if I want. So the question...

This works, thank you! Any idea why they'd have the CRC backwards? Maybe for rev. engineering confusion?

Using http://crccalc.com and entering 0010059F00004A00 I get CRC-16/XMODEM 0xD50E so it seems correct (only the 8 payload bits are calculated without header A5 5A). Because I have no experience with CRC calc's, I don't understand why 0xD50E is sent as 0x0E, 0xD5. Is this library able to fill in...

Could anyone help out with how this library works? There's not much to go by in the readme. I have this message: remoteSerial.write(0xA5); remoteSerial.write(0x5A); remoteSerial.write(0x0); remoteSerial.write(0x10); remoteSerial.write(0x5); remoteSerial.write(0x9F)...

It is now possible to boot directly from USB flash or USB SSD without a uSD card, but the process is non-reversable, iirc. Here's a good video on the topic https://youtu.be/ubnwvxF3Klc

Hey! Board designer here. Are you sure you have the Rs pin pulled low? You need to add something along the lines of pinMode(28, OUTPUT); digitalWrite(28, LOW); in your code, ideally in setup, before any CAN functions. This is not included in the FlexCAN lib by default. This pin can be used for...

I had no idea about that, thanks guys. SPI makes sense (brain fart), but is I2C on pte0,1 mapped too? Edit: "I2C1: SCL/SDA" awesome

Hi Paul, any chance you could map PTE0-5 including both UARTs alternates, I2C and SPI as, say, pins 58-63?

I agree, I would first try using one of the basic examples with Arduino IDE and Teensy to confirm that the hardware is reading (anything) correctly. If not on your setup, test a different car's CAN lines to see if you get anything. Also check the SN65 number on the chip to see if it really is a...

Interestingly, it was using one number repeatedly the way it should. Then something happened and it began incrementing. Now after restart it is working again, but Teensy gets assigned cu.usbmodem2220661 and bluetooth turned off. Then I deleted all USB Serials in Network settings and after...

This is most likely a problem on my side, just wondering if anyone has any experience with the same quirk. Whenever I reset or program/reset the Teensy, the USB port gets a different number (/dev/cu.usbmodem<n+1>) so I have to keep changing the port in ArduinoIDE. Windows adds a new port number...

Hi Greg, I had to suspend them because Microchip was doing firmware updates and noone had the modules in stock, but they'll be back shortly since it looks like both US and EU bands are available again.

I could be wrong, but I think they've stopped doing that. I remember reading about it when I started. Back then there was a lot of fraud going on. I would love to order Tsy's directly from you guys, but I opt for Oshpark because its the fastest and least painfull for me, plus I'm not fond of...

I have been using PayPal as a seller for 5 years or so and never experienced anything similar. Could be because I'm in Europe and they have to adhere to different laws. Whenever there was a dispute, only the funds from that one transaction were blocked. I sent tracking info and the dispute was...

First work on the fuctionality of your board. Panelization is the very last step and requires communication with the board house, negotiating vscore pricing etc. etc.

What reason is that? Plenty of large companies use PayPal. The ones that don't usually just can't accept the fees.

Here's a good source I like to refer to http://www.appfruits.com/2015/03/building-your-own-custom-teensy/

I found that the MK20DX128 (Teensy 3.0) is also offered in QFN and has all the features I need. (Actually DX256 seems to be made in QFN36 also, but are not stocked anywhere). The only problem I see when looking at the schematics is that the Mini54 is connected to PTB2, PTB3, which aren't...

Thanks, Paul. I understand the pitfalls, although I had luck with the smaller 36pin chip version last time. Regarding half memory - is this something that a programmer like me with average code experience could fix with a "new board" and looking at the registry definitions, or does it go deeper...

I too am planning a future board and wondering if the MKL26Z128VFT4 could be used. Is it a matter of just redefining storage/RAM as a new board or is it more complicated? The sketch uses 33Kb (52%) storage, but 7.9Kb (98%) memory with NoUSB. I need two HW serials, have not tried omitting the...

Wow. Thanks, Paul. I had already had all extras removed so I pulled out the magnifier and there was a minuscule splinter of solder/wire along a capacitor. Seems to be working great now. Sometimes all it takes is an old toothbrush.

Excited to get some stuff working, I forgot to cut the 5V trace with an external supply on VIN. I don't want to throw the board out and I'm fine with soldering small parts, but I'm unsure what let the smoke out. Iirc, I think I saw smoke near the processor (between the CPU and SD slot), I think...

I chose it mainly due to the great documentation and support at Microchip. Soon I may also need the parts to be fully certified. Should be up on Tindie shortly. There's not much to it. The RN needs 3.3V, a cap, gnd and Rx/Tx. I decided to add an on/off switch and battery charger so that it...

Thanks! That one's for RPi and these modules offer both 433/868MHz, thus two antennas, although 868 is more common.

There's not much info here on LoRa technology, but I've decided to delve into it and make this little node shield. I decided to go with the MicroChip RN2483 for its good documentation. Also added GPS for testing. Should be up and running soon.

Has anyone tried implementing the wake-on-interrupt feature? http://www.invensense.com/wp-content/uploads/2015/02/PS-MPU-9250A-01-v1.1.pdf page 30/31 This would allow very low power applications, eg. deep sleeping the processor and waking by movement.

QFN32 confirmed working with blink example so far.

Has anyone tried any functions for bitshifting? I'm not familiar with how to translate say byte 4, bit 2 and then something with it. There was some discussion about it in the other CAN thread, but not much that could be used in practice.