$40? I've been using these whenever I can ebay.com/itm/STM32F103C8T6 <https://www.ebay.com/itm/STM32F103C8T6-ARM-STM32-Minimum-System-Development-Board-Module-For-Arduino-1pcs/312108964016?epid=0&hash=item48ab24d8b0:g:luYAAOSwrhlazxC-> I use them as it where were a giant DIP chip At $2.80 each you can buy in bulk and just have some around. Mostly the pins are 5V tolerant
But the deciding factor is the software environment. The STM32 works with the Arduino IDE as well as GCC/Eclipse and Arm's "mbed" ecosystem and STM's "stm cube". THere are also a few RTOSes if yu need a realtime OS. So there ar many software option. For really simple stuff the Arduino IDE works but I've used a multi-tasking RTOS too. And you can't beat the price. These will certainly handle a pendant. What they can't handle, I found is two A/B encoders that are both running at high speed (11,000 RPM) and a serial port and a couple of PID loops. For that I use the bigger version of about the same thing that cost $14. st.com/.../nucleo-f446re.html <https://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-mpu-eval-tools/stm32-mcu-mpu-eval-tools/stm32-nucleo-boards/nucleo-f446re.html#overview> This one has hardware floating-point and a faster clock. THere is a $7 "motor control shield that works to control up to about 12 amp DC motor so you get to control and drive a couple servoes with encoders for about $35 with off the shelf hardware (no solder.) ebay.com/itm/Dual-VNH2SP30 <https://www.ebay.com/itm/Dual-VNH2SP30-Stepper-Motor-Driver-Module-30A-Monster-Moto-Shield-Replace-L298N/401089386943?_trkparms=ispr%3D1&hash=item5d62ca59bf:g:NA8AAOSw44BYEvxS&enc=AQAEAAACcIQvEcHUrT7nmUC3yY5qbPyaBN1nJEDYW8MyypsJPgXKLefOeKDNbhl56Ddqr5qda%2Fmaoh6aRFPqDPOz41D5%2FbQzr24YSkrueg4RbuTXBA38DLwcREhXLlfr8wnaIVUErBZlae75tyngTW3t8aeXW0BgVsuvTc3f4c%2F9RsWjB7OsZ2N%2FJDfcbzUdtslQHyEnAlMzm9zZJrWybC1%2FZqJkJwD7jMoqv%2BeAjepbOkzRuvVQ1PzwZFLTOkW%2BN8bmrhCJUTWl3OLuYDEwikXkgGONQtry5bjBkevQBdmYGxytrHygmEGicJz2ZdO99v39B5%2Fwk8ysFWI93H6J3pVo6f00w9GYKiid6Pr1mt0%2BV6HsQNWg%2BbmnWyp4S5ILXeoM7HxPOVWijc%2FW33QuhUJ34rGpYMnrj6tlg2rdW6xNJly6CywEzuWhWXTtS4bOnHk4Te5j867VHLFDept7yvGzfEOjE2S6INPDVmni5BbfnZjQ9lo26M7j3LzVwnin4spwf%2BBSeIy9nqLL%2BZbxNmmk71dtX8nUuF83WM8JP5oOYJhJW8tbL1yrOi80%2F58RI%2BgmsWzN12vL63inplpDQssrnkHV4Mbs%2Bek8iyMeq0TDPHmjr%2BTQWvz8dB7v8ctrtja8mD2qZQcKnflJ4h8EKhJTK%2Ba2zEfRhCEuAQGYinvW1IcwV0Q4mY2MLMKzEp7LOtFSXzEXXNbugNOTjFuTOJcKcGx8ckv31r98HiKyynqq8e7kqLdm06JWm%2Fs2mpCzwn8bVVN3qbtYsiWs6rCqe8bytwnVSbzhgefD1f%2FbpareXjnyFPSfxYRO4XbxX6uniLzmjxvOiA%3D%3D&checksum=4010893869430e8e33a99e504b46936dfc659258a871> The VHN chip was design for aautomotive use for seat adjustment and windsheild wipers f you are going to build an open-source project, you need a software environment that potential contributors can use. Software is usually the weak link for most hobby builders Most are not up to using GCC and Eclipse. On Mon, Jun 8, 2020 at 1:23 PM John Dammeyer <jo...@autoartisans.com> wrote: > My TI Delfino F28379D Launchpad kit just arrived. This has dual > processors, dual floating point units, QEI modules, CAN bus and a fair > amount of memory. And around $40 with shipping. There's lots of support > for using these as AC Servo motor controllers but I'm still looking at ELS > replacements for my PIC18F series board and potentially that ELS-MILL unit > which in many ways would be more like a smart pendent. > > https://www.ti.com/tool/LAUNCHXL-F28379D > > It doesn't have Ethernet but can be a USB device. Or for that matter a > SPI bus device. > > I'll post progress reports under a different subject line once I find more > than 5 minutes to play with it. > > John Dammeyer > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
