I have a RPi 4b which has a sequent microsystems 8 relay hat and on top of that it has lcd touchscreen. I just connected it to an Adafruit Feather RP2040 using a USB bus. The feather is monitoring an encoder so the Pi doesn't miss counts. Got the encoder working just fine, but now I have a weird issue popping up.
The relay can be ran either from code or the command line. Using python, I have coded the relays numerically, doing things in the order needed.
I have ran various code using all of the relays before connecting the Feather, and everything worked perfectly.
Now anything coded for the relay acts very strange.
So I reinstalled the lib8relind library, and it still is goofy.
Here's what it does.
From the command line, I test all the relays:Everything works, here's the resultUsing the command line, I test the individual relays using: (x is the relay number between 1 and 8)I check the relay, each one is working fine.
Then I turn it off that relay.Here's a simple python script that only looks at one relay at a time.
Can't get much simpler then that.
When ran, the code returns this, pretty simple.
Here's where it gets really strange when using the python code shown above.
Relay entered Relay activated
1..............................1
2..............................7
3..............................2
4.............................. 7
5..............................4
6..............................5
7..............................3
8..............................Error (below)
Now if I change the python code from to (changing the "1" to the relay #) it works fine.
I haven't had any success from contacting Sequent Microsystems. Anyone have any ideas?
The relay can be ran either from code or the command line. Using python, I have coded the relays numerically, doing things in the order needed.
I have ran various code using all of the relays before connecting the Feather, and everything worked perfectly.
Now anything coded for the relay acts very strange.
So I reinstalled the lib8relind library, and it still is goofy.
Here's what it does.
From the command line, I test all the relays:
Code:
8relind 0 testCode:
Are all relays and LEDs turning on and off in sequence?Press y for Yes or any key for No....yRelay Test ............................ PASSCode:
8relind 0 write x onThen I turn it off that relay.
Code:
8relind 0 write x offCode:
#!/usr/bin/env python3# Make sure you "chmod +x main.py" or else it won't start by itself from the command line.import osimport lib8relindfrom getkey import getkeyrelay = 0def test(): lib8relind.set(0, relay, 1)def shutdown(): # make sure all the relay is off lib8relind.set(0, relay, 0) # now shut the program off exit(0)# Runs the programprint("TEST")print(" ")print("Enter a relay # (1-8)")print(" ")print("<any other key will end the program>")a = ""while True: # Breaks when key is pressed key = getkey() print(key) breakif int(key) in range(1, 8): try: while True: relay = int(key) test() except KeyboardInterrupt: lib8relind.set(0, relay, 0) shutdown()else: shutdown()When ran, the code returns this, pretty simple.
Code:
b2400@b2400:~/Desktop/b2400 $ python test6.pyTEST Enter a relay # (1-8) <any other key will end the program>1Relay entered Relay activated
1..............................1
2..............................7
3..............................2
4.............................. 7
5..............................4
6..............................5
7..............................3
8..............................Error (below)
Code:
Traceback (most recent call last): File "/home/b2400/Desktop/b2400/test6.py", line 46, in <module> shutdown() File "/home/b2400/Desktop/b2400/test6.py", line 16, in shutdown lib8relind.set(0, relay, 0) File "/home/b2400/lib/python3.11/site-packages/lib8relind/__init__.py", line 47, in set raise ValueError('Invalid relay number!')ValueError: Invalid relay number!Code:
lib8relind.set(0, relay, 1)Code:
os.system("8relind 0 write 1 on")I haven't had any success from contacting Sequent Microsystems. Anyone have any ideas?
Statistics: Posted by gwfami — Thu Oct 10, 2024 1:25 am