New for 5 Pcs ATTINY85-20PU DIP-8 IC ATTINY85 MCU 8BIT 8KB Microcontroller, US

Truly a system-on-a-chip (SoC) solution. The attached photo shows all five tiny85 ICs, two in-action; one just running Fade on digital PWM pin 0 and a second one still in the AVR Programmer with LEDs off each output pin. All five ICs function great so no apparent bad/faulty product delivered. If you know the specs, there are five I/O pins while three can do analog-to-digital. Obviously, a capacity subset of Uno or Nano models but still quite capable for such a small package. If you're seeking a light, flexible, small, complete microcontroller, the ATtiny versions are hard to beat. It's also less power-hungry than other Arduino's so will last longer on a battery or consume less wattage supplied 5 volts DC. By default, the system clock runs at 1MHz but can be adjusted up (8, 16, 20 external) or even down to save energy;128 KHz @ .75mA, 1MHz @ 1.2mA (or .21 idle), 8MHz @ 5mA, and 16MHz @ 9.2mA. Idle mode isn't useless since the chip can still pulse pins on a timer or wake up for interrupts. Overall, I recommend and would buy again where miniature circuit requirements are in play. Otherwise, Nano is still my favorite MCU series. Photo#2 shows the Tiny85 (now running at 8MHz after flashing a new bootloader) ATtiny85 controlling 128 LEDs (matrix) via only three pins to daisy-chained 74585 shift registers.

I bought a set of 5 of these. I have burned, tested my code, and burned again for several weeks now. I have probably reused each piece at least a dozen times with no issues. Note you do need to initialize the chip by "burning a bootloader" even if you do not require the actual bootloader part. I use the Sparkfun Tiny AVR Programmer to read and write the chip.

These were a decent price, and appear to function as legit ATTiny85 chips (I’ve gotten counterfeits before which were actually ATTiny12 chips with false ‘85 etching). I reburned the bootloader and uploaded a simple blink program to all 5 and they work as expected. However, I was very unhappy with the packaging they came in. I’m not sure who thinks it’s all right to ship DIP parts loose in a bag, but this ALWAYS results in bent/broken pins. Someone couldn’t be bothered to stick them in a 2 cent piece of foam to protect the fragile pins and I think that’s ridiculous.

All run my test program, so can’t complain.

They are well made, easy to program, and they all worked great.

They work

Couldn’t get these to come to life. There are 5 and not one worked. I tried various methods on them factory fresh… nothing. I tried programming them directly, but no bootliader. Tried with an arduino as isp, no luck. Used a hvsp and absolutely nothing. I was looking forward to this, but I’ll be sending it back instead.

Chips will program but circuitry is bad, 1 out the 5 I ordered works in the exact same PCB with a 8-pin DIP socket. I did not discover this until well after the order since I was waiting on PCB's from another country to arrive so it could be tested.