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Uart "translator" 1Mb to 921600b?
Bit of a tricky one this!   I have two devices, and neither of them can be changed, modified or adjusted.   Device A puts out a TTL level UART at 1mbaud. Device B is...
Thursday, 6 July 2017 - 19:48
Whats the actual difference? 85 vs 105 degC parts?
Some questions around the max temp that an AVR can run at:   1) Atmega's come in three temp ratings,  industrial (up to 85degC) extended industrial (up to 105 degC) and...
Tuesday, 13 June 2017 - 10:41
Encode two analogue parameters into one digital channel?
I am looking at building a modular half bridge driver for various projects, and i would like to galvanically isolate that bridge from the controller, which is no problem for the...
Monday, 1 May 2017 - 12:24
Measure lots of resistances, sequentially - EOL tester design
If i wanted to build a sort of End Of Line tester, that could measure the complete resistance 'map' between every 2 pins in 24 test pins (ie 552 different combinations of two pins...
Friday, 31 March 2017 - 19:40
AVR - Calibration & Daq toolchain?
When working with the big boys, there are standardised toolchains that allow seamless integration for digital control units within the process of system calibration and...
Thursday, 9 March 2017 - 12:06
Adding Protective Resistance to UART lines going "external" to device?
Right, firstly, i am fully aware this question is very much in the "how long is a piece of string" type vein, but bare with me!!   I have a controller, and i'm going to break...
Saturday, 18 February 2017 - 17:39
Freeware software to produce a .hex file "checksum"
I have a client that stores .hex and .eep files on their network, which are used to flash their products.  They have asked if it is possible to check that those files have...
Friday, 27 January 2017 - 13:49
S/W & H/W options to "decode" 6 frequency inputs?
I have a Mega64 embedded in a control system, that is fairly busy, doing control calcs and running things like CAN / USART coms etc.  I need to read the speed of up to 6...
Wednesday, 25 January 2017 - 22:34
Min number of cycles to Read, then set a port?
For my "bodge" VFD re-purposing project and to set the IGBT gate driver, i need to temporarily (for test purposes) split a single ~10KHz PWM TTL level signal into two...
Sunday, 1 January 2017 - 19:28
Variable freq/amplitude sine wave generation with pwm?
I'm looking for some general pointers and advice on using the timer/counter hardware on an AVR to generate a suitable pwm output, that will be low pass filtered to a sine wave....
Wednesday, 21 December 2016 - 22:07
Clever ideas for setting a "module address" for stacked modules?
I've got an input card, on which is a AVR, which does some housekeeping tasks such as scan some buttons and set some led's / relays etc.  It also has a RS485 bus connection...
Wednesday, 23 November 2016 - 19:38
Counting 50ns pulses - with caveats!
I have a 1 Mhz clock with 10% duty (100ns pulse width), that is used to trigger a sensor, and that sensor outputs a pulse in time with the clock when a certain event occurs. Due...
Friday, 5 August 2016 - 19:53

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