Search found 13 matches

by MStackoverflow
Thu Aug 13, 2020 5:52 pm
Forum: Hardware
Topic: Reflow PCB with WROVER on it?
Replies: 3
Views: 583

Re: Reflow PCB with WROVER on it?

Thank you!

So, to reflow the PCB, do you recommend using paste that reflows at a lower temperature than the listed 235 ~ 250℃, or is a paste that reflows at the same temperature is fine?
by MStackoverflow
Wed Aug 12, 2020 7:06 pm
Forum: Hardware
Topic: Reflow PCB with WROVER on it?
Replies: 3
Views: 583

Reflow PCB with WROVER on it?

Hi, I'm getting a lot more into PCB design, but my work rate is very slow if I do everything by hand. I designed some custom PCB to fit an ESP32 WROVER-E on it. In the manual , it says the absolute maximum rating is 150°C (storage temp). If I put a PCB with a WROVER on it and I reflow the board at 1...
by MStackoverflow
Wed Aug 12, 2020 6:56 pm
Forum: ESP32 Arduino
Topic: ESP-NOW help with encryption (PMK/LMK)
Replies: 4
Views: 2167

Re: ESP-NOW help with encryption (PMK/LMK)

I manage to make it work a while ago. I don't remember how I solved the problem. I think it has to do with the call order of functions. Here's the setup code (Slave and master don't have the same meaning for me): Note that you could use memcpy instead of loops. Master Side (Slave is a custom Object)...
by MStackoverflow
Mon Dec 16, 2019 9:32 pm
Forum: ESP32 Arduino
Topic: ESP32 + CAN Comm
Replies: 4
Views: 1691

Re: ESP32 + CAN Comm

Learning how the J1939 protocol works would be benificial for you. Documentation is pretty hard to find, but here's some basics : J1939 has extended bit addresses (29-bit) compare to CANOpen or OBDII. Each address contains a standardized type of information for vehicle. The address contains a PGN nu...
by MStackoverflow
Tue Dec 03, 2019 9:52 pm
Forum: General Discussion
Topic: ESP-NOW ways to ignore broadcast?
Replies: 0
Views: 512

ESP-NOW ways to ignore broadcast?

Hi, I want to make a private network. I have 2 ESP32 talking to each other with unicast messages but broadcast messagegs can still be received. I'm afraid that someone could flood the network with broadcast messages and jam the ESP32s. I already filter the messages when I receive them, but the ESP32...
by MStackoverflow
Tue Dec 03, 2019 6:58 pm
Forum: ESP IoT Solution
Topic: ESPNOW access via pc or phone
Replies: 5
Views: 4311

Re: ESPNOW access via pc or phone

I guess if you want a quick hack you could add an ESP32/ESP8266 which bridge one of the esp on the network via bluetooth, then send the information to your local network, which could be controlled by your phone. Or, I don't know if it's possible, take ESP-NOW messages and send it directly to a wifi ...
by MStackoverflow
Mon Dec 02, 2019 9:38 pm
Forum: ESP32 Arduino
Topic: ESP32 + CAN Comm
Replies: 4
Views: 1691

Re: ESP32 + CAN Comm

Hi, Do you have control over the device that is sending the CAN messages? The reason why you don't receive 1.3 is because the sender is not sending 1.3 Usually, REAL numbers in CAN protocols have 32 bits (4-bytes), unless there is a "per bit" value like in J1939/OBDII protocols. 16-bits "REAL" are r...
by MStackoverflow
Mon Nov 25, 2019 11:04 pm
Forum: ESP32 Arduino
Topic: ESP-NOW help with encryption (PMK/LMK)
Replies: 4
Views: 2167

Re: ESP-NOW help with encryption (PMK/LMK)

Hi, sorry for double posting.

Anyone can help me?
by MStackoverflow
Tue Oct 15, 2019 5:26 pm
Forum: ESP32 Arduino
Topic: Can bus issue , stuck messages
Replies: 10
Views: 5398

Re: Can bus issue , stuck messages

Depending on how critical is your application, I would recommend to enable One-Shot mode ONLY if it is necessary.
by MStackoverflow
Tue Oct 15, 2019 5:20 pm
Forum: ESP32 Arduino
Topic: ESP32 RC War tank toy with android App
Replies: 4
Views: 1611

Re: ESP32 RC War tank toy with android App

What developper program are you using for the android application? What language? If you want to do a quick test, you can use bluetooth instead of wifi as it is easier. with the "MIT App Inventor", you can create a quick app for testing https://appinventor.mit.edu/ https://appinventor.pevest.com/201...

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