BIGTREETECH TMC2208 V3.0 Stepper Motor Driver with Heatsinks Stepstick Mute Driver for SKR V1.4 SKR 3 GEN L Ramps 1.4/1.5/1.6 3D Printer Control Board, Pack of 5pcs, Step/DIR Mode

I have an old i3 Mega that I'm breathing new life into and decided to do the upgrades on the drivers. I was always hesitant because of conflicting procedures and settings posted but finally took the dive. I bought the TMC2208 v3 UART drivers then realized they were the wrong ones I should have purchased the STEP/DIR ones even though they are not software configurable. Well the issue came with de-soldering the jumpers on each driver to take them out of UART mode or send them back for the right ones. It occurred to me I had read you could just remove pins 3,4 & 5 instead of de-soldering them... being lazy and knowing fully well it would void any warranty I went for it. Set the Vref at .95 on them all. I didn't physically reverse the pins to the stepper motors and instead opted to use the Marlin software upgrade that has the pin reversal in the code. Like having a new printer! The drivers are great and work perfectly. Between them and the Marlin software it has made a huge jump in print quality and got rid of the noise along with the steppers getting hot. Definitely worth the upgrade on an Anycubic i3 Mega just make sure you get the STEP/DIR ones or be prepared to do a lot of additional work on your board and coding.

Got these to replace my TMC2100s and they work like a champ. No more skipped steps due to over heated motors. These crank out power to my stepper motors and allow me to fine tune just how much power is going to them thru menus on my printers menu. I now run nearly 3 times less power to my motors causing them to run cold, even at speed. This means no more skipped steps due to over heating. This also means my printer runs significantly quieter. These also crank enough power to my extruder motor to run retractions @ 80mms with zero skipped steps while running cold to the touch too. Pros: Runs my stepper motors quieter than any other driver I've owned, and I've owned a lot. DRVs As and older TMCs. These put them to shame. Ability to control vref voltage from menus on my printer is really nice. Sensor less homing is the bomb once you get it tuned. Cons: Had to remove a pin to get sensor less homing working. This was a pain. Price. Other thoughts: These were spendy but if you were like me and keep having motors over heat, these will fix your problem. Worth every penny.

I tested this stepper driver using Arduino Nano and then Mega. Work great in standalone mode as a very quiet A4988. The UART mode give you a lot of control over driver's parameters. On Arduino I used the library by Peter Polidoro it works great for the most part. When testing StallGuard the example code missing a line setCoolStepDurationThreshold(0xFFFFFF). Without this line the DIAG pin will not assert when a stall is detected. Also, this chip will not automatically disable the driver when StallGuard is triggered. You have to sense the DIAG status and handle it in MCU code.

These were installed on my Anycubic Mega-s. I watched some YouTube videos and gave it a shot. The printer is much quieter. I started at .85v, but had shifting on the x and y axis. After some testing I was able to print without shifting with x and y at .98v. The stepper motors run cooler now too. These are a nice upgrade to the printer.

Theee work great with an ESP32 fo UART stepper control and communication!!

Got them installed only to figure out that 1 was dead. Contacted support and they are sending replacments. These seem to be some of the best drivers but quality control is lacking. Very disappointing, it’s been about a weeks since installing them and my printer is still tore apart waiting for BIQU to respond.

My stock FLSUN QQ-S Pro was noisy out of the box. I dealt with it, but after seeing other people upgrade their stepper drivers and show videos online WITHOUT NOISE, I knew I had to upgrade mine. The process is not terribly difficult but you NEED to monitor the voltage for each driver that you install. If you're not comfortable doing that, check with local Maker Fare facilities or computer stores that might be able to assist you. My printer can support the newer TMC2209 drivers but this was an inexpensive and quick method to silence the stepper motors.

Swapped out boards with the DOESBOT one for my 3018 PRO and popped these in as I upgraded the stepper motors. Also bought bigger heatsinks and a fan because these get very hot, very fast. They're working well. I was extremely confused by the whole UART functionality bit, there was conflicting documentation on the listing about this. However, in the end, I just popped the drivers in using jumpers for 1/16th micro stepping and it worked perfectly. So, I'm sure these work with UART, but it doesn't appear to require it.

pretty obvious complaint, one of them is unusable, and one driver is the same cost of a pack of a4988