4 ms·

GPIO pins. If you want to connect a "regular PC" to the real world, you can get a USB DAQ but even the cheapo LabJack, NI or MCC models are at least a hundred

GPIO pins. If you want to connect a "regular PC" to the real world, you can get a USB DAQ but even the cheapo LabJack, NI or MCC models are at least a hundred bucks.

easygenes 4y ago
The LattePanda 3 Delta [1] has a Celeron N5105 and RasPi levels of GPIO pins. 1: https://www.dfrobot.com/product-2594.html
- mattkrause 4y ago
  But it's $200 more...(but it's also in stock).
StillBored 4y ago
The GPIO on the PI is compromised for any hard realtime usage by the fact its running linux (ignoring what can be done with a lot of extra work with a RT kernel and pinning cores). For non realtime use, the $10 USB->GPIO ones work fine on any computer with USB. In fact many of them are just ESP's, and work even better than the pi for hard real-time because you write custom bitbanging ardunio code and send the results/control signal over the USB. They become custom peripherals with a /dev/ttyUSB endpoint.
- chasd00 4y ago
  On my pi zero w, for realtime needs like pwm I use a dedicated controller and access it over the i2c bus. It works just fine. https://www.adafruit.com/product/815 https://www.adafruit.com/product/815 I got my pi zero w a lonnng time ago when you could actually find them.
haradion 4y ago
A little microcontroller with USB support (I like the Raspberry Pi Pico) can help with your GPIO woes.
- ozim 4y ago
  I bet it is a bit more hassle than RPi.
  - haradion 4y ago
    Sure, in many cases. Depending on the situation, though, it may be no more hassle than any other USB GPIO device, so it's a decent enough cheap solution if you can't or don't want to use a Pi or a similar SBC.
- chasd00 4y ago
  with circuit python (basically Micropython) from adafruit you can open a screen session to the USB port and get a REPL interface. I wonder if you could set something up to script input and output from REPL (i'm not a python expert). If you could then you'd have a little pipe to the micro-controller where you could enter python and have it execute and return a value. From there you have all the GPIO and other features available on the microcontroller available to you on your computer. I have one of adadruit's RP2040 boards and use the REPL a lot to talk to other things connected to the i2c bus. For example, controlling servos from a servo board, or getting orientation data from an IMU. Basically, i treat the circuit python REPL like a command line https://www.adafruit.com/product/4884 https://www.adafruit.com/product/4884
ThrowawayR2 4y ago
The Odroid H3 / H3+ is a x86 SBC that has a 24-pin GPIO header and is only moderately more expensive.

GPIO pins. If you want to connect a "regular PC" to the real world, you can get a USB DAQ but even the cheapo LabJack, NI or MCC models are at least a hundred bucks.

easygenes 4y ago

The LattePanda 3 Delta [1] has a Celeron N5105 and RasPi levels of GPIO pins. 1: https://www.dfrobot.com/product-2594.html

mattkrause 4y ago
But it's $200 more...(but it's also in stock).

StillBored 4y ago

The GPIO on the PI is compromised for any hard realtime usage by the fact its running linux (ignoring what can be done with a lot of extra work with a RT kernel and pinning cores). For non realtime use, the $10 USB->GPIO ones work fine on any computer with USB. In fact many of them are just ESP's, and work even better than the pi for hard real-time because you write custom bitbanging ardunio code and send the results/control signal over the USB. They become custom peripherals with a /dev/ttyUSB endpoint.

chasd00 4y ago
On my pi zero w, for realtime needs like pwm I use a dedicated controller and access it over the i2c bus. It works just fine. https://www.adafruit.com/product/815 https://www.adafruit.com/product/815 I got my pi zero w a lonnng time ago when you could actually find them.

haradion 4y ago

A little microcontroller with USB support (I like the Raspberry Pi Pico) can help with your GPIO woes.

ozim 4y ago
I bet it is a bit more hassle than RPi.
- haradion 4y ago
  Sure, in many cases. Depending on the situation, though, it may be no more hassle than any other USB GPIO device, so it's a decent enough cheap solution if you can't or don't want to use a Pi or a similar SBC.
chasd00 4y ago
with circuit python (basically Micropython) from adafruit you can open a screen session to the USB port and get a REPL interface. I wonder if you could set something up to script input and output from REPL (i'm not a python expert). If you could then you'd have a little pipe to the micro-controller where you could enter python and have it execute and return a value. From there you have all the GPIO and other features available on the microcontroller available to you on your computer. I have one of adadruit's RP2040 boards and use the REPL a lot to talk to other things connected to the i2c bus. For example, controlling servos from a servo board, or getting orientation data from an IMU. Basically, i treat the circuit python REPL like a command line https://www.adafruit.com/product/4884 https://www.adafruit.com/product/4884

ThrowawayR2 4y ago

The Odroid H3 / H3+ is a x86 SBC that has a 24-pin GPIO header and is only moderately more expensive.