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Where to buy SMD 5050 leds
Hello,   i have started small production line and now i have to stop using LED strips (ineffective, expensive, low quality,...) and am palnning ot make my custom pcb for...
Monday, 28 January 2019 - 10:01
BQ2057 battery charger
Hello,   i developed PCB whit BQ2057 li ion charger. For the schematics, i selected application circuit from page 10 in datasheet, for 0.5A charge current. Now...
Wednesday, 22 August 2018 - 12:39
Erratic analog readings on SAM D21
Hello,   i created a custom pcb whit sam D21 mcu. I connected the Aref pin to GND via the 0,1uF capacitor and the VDD_ANA(analog VCC) via a ferrite bead (100 Ohm) to VCC...
Wednesday, 27 June 2018 - 12:17
Atmel ICE error 4109 on Arduino ZERO and custom board
Hello,   i finished project on Arduino Zero and now i made custom pcb. I COPIED the circuit from the Arduino Zero datasheet and diagrams, but now when i connect the Atmel ICE...
Monday, 18 June 2018 - 12:29
Arduino Zero via Atmel /ICEStudio
Hello,i am trying to connect my Arduino Zero through SWD to my Atmel studio. It was workign firn for about an hour, but now everytime i try to connect i get message:...
Friday, 15 June 2018 - 10:52
Near ideal transistor or similar on/off switch
hello,   i am measuring(whit 1s interval) a voltage point in a electro-chemical system, via an op amp configured as a buffer(voltage follower) since i need measuring...
Tuesday, 5 June 2018 - 07:31
Can not start SPI with ILI9341 from ASF
Hi,    i have been trying to get my ILI9341 TFT lcd to work whit the ILI9341 driver from ASF on my SAM4S Xplained Pro board. So far all i managed is to turn on the...
Monday, 21 May 2018 - 10:49
SAM4S Xplained pro master clock speed
Hello,   i can not find any data to tell me at what frequency(MHz) the SAM4S Xplained Pro is running. All i found is that it ouses output of PLLACK as master clock source:...
Monday, 21 May 2018 - 08:10
Charging 18650 batery via 2A USB wall charger.
Hello, i have a battery pack (6xx 18650 in pararell) whit output of 3.7V and a total capacity of 17400mAh(6x 2900) and i wish to make a charger from scratch. So far after reading...
Tuesday, 15 May 2018 - 12:36
Cant get SPI to work whit ILI9341 ASF on SAM4S xplained
Hello,   I am trying to get my SAMB11 XPLAINED PRO(now on SAM4S Xplained Pro) to work whit an lcd that has ILI9341 driver. I have found good looking library on atmel ASF site...
Monday, 7 May 2018 - 12:27
4 to 20ma transmitter IC in DIP
Hello,   i am currently designing a PCB that will transmit some simple data over standard 4 to 20mA protocol. So far i found several ICs that could do this job(XTR115, XTR116...
Friday, 4 May 2018 - 10:56
Professionals and ASF for ARM
Hello,   i did some projects so far at work(only couple of months out of colege and at work) using 8-bit AVRs and some SAM21 boards and i always use direct register aproach....
Friday, 23 March 2018 - 20:07

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