10PCS Digispark Kickstarter Attiny85 General Micro USB Development Board for Arduino

Update 10/15/21:After using these as mouse jigglers for a little while I'm sad to report back that I have not been able to get them consistently working. Sometimes it's switching USB ports, and even then they only occaisionally work. The boards still work fine for non-HID tasks. I'd steer clear if you need something to consistently communicate over USB.Original review belowWarning: Programming required! Does not do anything out of the box other than blink!Use case: HID emulator for mouse jiggler.Important note(why 5 stars?): The boards work. Three of the five received were programmed successfully and perform their jiggling job flawlessly. The other two are missing due to my cats. The easiest way to prove the hardware works is just plug it in. My boards came preprogrammed with the blink sketch. Do you see a solid green light and red blinky light on the board? If so the board is fine, and it's a software(or maybe USB on your computer) issue.Caveat emptor: This is not a foolproof process like a programming a standard arduino. If you just want a single mouse jiggler, get an off the shelf product. I wanted to know what was happening under the hood and am suspicious of mystery dongles. A badusb might be easier to program out of the box but I only just got one so the jury is still out on that for me. I ran into several issues with the Digispark clones in this review. Issues described below.Notes:-I used debian and Arduino 1.8.15 to program and was able to get it to work. Some of the issues I encountered may also happen on a windows machine.-I used the standard digistump/digispark GitHub repo to get the board profiles and micronucleus into the Arduino IDE. If you are using Linux and aren't familiar with the OS I'd recommend following one of the 3rd party guides.-Debian specific(probably): Error "Assertion 'res>=4' failed" translates to a permissions issue. In my case that meant the board needed to be added to the dialout group to be programmed. There is a solution online involving creating a digispark.rules file containing a short snippet of board info.-Speaking of permissions: make sure you(the user) also have permissions for the appropriate group(e.g. dialout). When in doubt, eliminate the variable of a cloned Kickstarter board(this product). Plug in a bog standard Arduino uno and try uploading the blink sketch. If it didn't work(and you know it should because you double checked the board settings on the IDE) chances are you don't have the right permissions. Change permissions and keep fiddling with the uno until you can get it to program no issues, then move to the Digispark clone.-The board profile in the IDE is "Digispark(Default - 16.5mhz)" for this particular clone.-The programmer should automatically change to "Micronucleus".-If it didn't auto-change: either the board isn't recognized because of board permissions(see above and note that user permissions shouldn't affect this) or because something just didn't settle in after you added the boards and programmer to the IDE. A good ol' reboot worked for me.-Many troubleshooting posts talk about fiddling with micronucleus. I just used it as is.-Flash erase error 32 was corrected by trying a different USB port. There is one open thread from 3ish years ago where OP posted the same error 32. OP didn't get a solution and didn't bump the thread. I suspect they probably came to the same conclusion I did.-Googling "digispark mouse jiggler" will lead you to the code you want for copy/paste. I'd pick some code that blinks the red led every time it jiggles and disable that afterwards to be more stealthy and tacticool.-If you have the board flashed, and it's blinking you'll know you've done your job with programming.-obvious fact that I still tried to look for: the mouse jiggles an almost invisible amount, assume you can't see it. That's why the LED blinking with movement is useful.-My windows machine still went to lock screen with the jiggler plugged in: try a different USB port. This also happened to me.

I ordered 5 and they have served me well. The quality of assembly is good. My only complaint is the USB connector would not work (Intermittent) with some of my cables that seem to work fine with other products. I think my next order will be the PCB end USB for a type "A" usb connector .

Arrived on time. Product worked first try. I've only flashed a few LEDS so far, but got them during the work week. Did try several simple Arduino programs, just had to change pin assignments, and they worked just as well. Very good value, considering Arduino Nano has doubled in price over the past year. For smaller projects, these will be great to free up a few Nanos, which overkill. Will likely be ordering more soon. They are very small boards, and I can see a few other projects to squeeze these into,

I work as a BDC agent at a car dealership and I am on my computer 12 hours a day. It is a very large (300+ stores) chain and they recently implemented a 90 second 'timeout' rule for every computer in all of the stores. When the computer "times out' , I have to log back on to 4 main programs that I use, taking 2-3 minutes to get back in 'synch'-this happens 15-20 times a day.Very frustrating.After reading a few articles and watching a few you-tube videos , I figured I'd give this a whirl. I ordered a 5 pack of this item assuming I'd break a few of them or receive a dud or two while attempting to make a 'jiggler'.Following a guide that I found( search for ATtiny85 jiggler) ,I downloaded Arduino and figured out how to create a 'sketch'. I plugged the first one in to a USB port and hit the 'upload' arrow in Arduino and all I got was 'dinging' noise from my computer and the program 'timed-out'. My computer was not recognizing the device.After watching a few more video's and reading a few more articles , I stumbled on to the solution. It turns out that the USB diver for the ATtiny85 must be loaded onto your computer before Arduino can do it's thing.I installed the driver and plugged in the device...Arduino programmed it in about 10 seconds. I did all 5 units in less than 5 minutes..I brought one to work and plugged it in..no more 'time-outs'.The only gripe that I have with this thing is that there are 2 LED's on the unit that are very bright and constantly 'blink' -- which can draw the attention of a passer-by. I solved this problem by simply wrapping it in black electricians tape.

The PWM voltage output is somewhat inconsistent, so don't use these if you need precision voltage outputs (such as, say, a MIDI-to-CV converter), but then, they are very, very cheap. (If you're building any kind of MIDI thing, get at least a Teensy 3.2—you're welcome.)

Good product for the cost, but the quality wasn’t the best. Had to throw out old pieces once they stopped working

Bought a bunch of them to play around with and they serve their purpose really well

Four of the units worked fine. One of them had a damaged D3 diode, probably happened during packaging as the broken parts were in the anti-static bag they come in. I was going to just solder on another diode, but it turns out that Digispark's original design was flawed and the diode was soldered on backwards. There are big discussions about it here and there. The design of these units were corrected before they were manufactured. Kudos for the redesign!!!! Digispark is a flawed company from what I read today, the broken part was well worth the price since I'll never buy anything from digispark again. Besides I can still use it as a breakout board for the surface mounted ATTINY85 after clipping off the USB connector