microcontroller oscilloscope - Page 1
Forum section: electronics / projects

author: yalect
author_rank: Regular Contributor
timestamp: October 31, 2015, 10:10:53 am
content: Hello,I am looking for simpleusboscilloscope project based on microcontroller maybe Atmel it's better but working with high frequency above 25Mhzmay you have ideas?thank you

author: Fungus
author_rank: Super Contributor
timestamp: October 31, 2015, 10:23:50 am
content: Quote from: yalect on October 31, 2015, 10:10:53 amThat's a contradiction.Quote from: yalect on October 31, 2015, 10:10:53 amArduinos only run at 16Mhz and they take many clock cycles to read the ADC.

author: promacjoe
author_rank: Regular Contributor
timestamp: October 31, 2015, 04:34:53 pm
content: Arduino DUE runs at 84Mhz, on a 32-bit ARM core microcontroller.

author: Fungus
author_rank: Super Contributor
timestamp: October 31, 2015, 06:30:22 pm
content: Quote from: promacjoe on October 31, 2015, 04:34:53 pmI know that...But he said "Atmel microcontroller", not "ARM processor" so I'm guessing that's not what he was thinking of.

author: nbritton
author_rank: Frequent Contributor
timestamp: October 31, 2015, 08:56:52 pm
content: This is a fool's errand if your goal is to get a functional oscilloscope. You would be much better off buying something pre-made like the Analog Discovery which is capable of 45 MHz bandwidth and has differential inputs, get yourself an academic email address and you can pick this up for $159. Alternatively there is also the Red Pitaya.It says in the datasheet that the Atmel XMega microcontroller's ADC only has the throughput for 4 MSa/s:http://www.atmel.com/products/microcontrollers/avr/AVR_XMEGA.aspx

author: promacjoe
author_rank: Regular Contributor
timestamp: November 01, 2015, 12:55:57 am
content: Quote from: Fungus on October 31, 2015, 06:30:22 pmI thought it Included all Arduino+Atmel products.The Arduino Due is a microcontroller board based that uses the Atmel SAM3X8E ARM Cortex-M3 CPU.otherwise I would've included the pcDuino3, it is a 1GHz ARM Cortex A7 Dual Core. But it is not an Arduino product. Only Arduino compatible.

author: Fungus
author_rank: Super Contributor
timestamp: November 01, 2015, 02:23:40 pm
content: Quote from: nbritton on October 31, 2015, 08:56:52 pm...unless your only goal is to learn about "making ascilloscopes".Quote from: nbritton on October 31, 2015, 08:56:52 pmNo it isn't. It's more like 10 MHz.

author: Fungus
author_rank: Super Contributor
timestamp: November 01, 2015, 02:24:48 pm
content: Quote from: promacjoe on November 01, 2015, 12:55:57 amYou never knowI was just guessing based on the tone of the post.It's not going to makee a 25MHz 'scope either way.

author: Fungus
author_rank: Super Contributor
timestamp: November 01, 2015, 04:56:43 pm
content: Quote from: AcHmed99 on November 01, 2015, 02:32:26 pmOK, didn't know that.It's quite a fun/useful device if you can get the discount.

author: Zero999
author_rank: Super Contributor
timestamp: November 01, 2015, 06:32:08 pm
content: Quote from: nbritton on October 31, 2015, 08:56:52 pmI agree but you definitely need the discount, otherwise you're better off with an entry level Chinese 'scope such as something from UNI-T, Hantek, Owon Rigol etc.