Post Created date
Atmega328 Cap Sense+Input+Software PWM?
I always break the problem down to bite size pieces, start with one touch pad and one LED, once that is working then add more. JC
Thursday, 4 September 2014 - 13:35
UART data send - mixing bytes
At 9600 baud, your sending one character ~ every mS, and your strings look like they are 11 or 12 char's long, so your generating new data faster then your sending, so you may...
Tuesday, 2 September 2014 - 12:54
1284p halts and reset not working
I'm a bit confused, is this operating at (minus)45C or {plus)45C. if the former, that's pretty cold, are all of the components used rated for that temp? JC
Friday, 29 August 2014 - 02:24
jtagice mkii which way does the FFC go?
backing down, exposed pins up! jc
Thursday, 28 August 2014 - 18:10
ATtiny85 ADC question
PB3 is the reset pin, and has a permanent weak internal pull up resistor, move your temp sensor to any other ADC input and see if your results change! JC Sorry, I was looking at...
Thursday, 28 August 2014 - 17:53
impedance loading at input of microcontroller
I would not use the internal pull up as that will "bias" your voltage divider. Turn off the internal pull up, and see if it works. JC
Monday, 25 August 2014 - 13:45
MPCM USART project and Proteus simulation problems
Have you tried Proteus support?
Monday, 25 August 2014 - 13:17
ATmega48 - AD5121 I2C problem
As a suggestion, I would move the i2c_init() function out of the forever loop, only doing it once before looping. Try a slower I2C clock speed, once you have it working, you can...
Monday, 25 August 2014 - 13:10
Sparkfun TMP102 and TWI Problem
There are min times for the protocol, stopping mid transfer to do slow LCD updates and 5 sec delays are sure to cause problems, try sending entire command sequences capturing...
Wednesday, 20 August 2014 - 15:22
Unable to enter programming mode (AVRISP MKII)
Also the AVRISP mkII does not supply VCC to the target MCU, the MCU must be powered from a separate power source in order to be programmed. JC
Wednesday, 20 August 2014 - 14:46
Atmega328P + DS3231
It always amazes me when I see I2C functions used without any testing of return values. Most I2C functions return a status code, which can be used to identify problems. When I2C...
Wednesday, 20 August 2014 - 14:13
avrdude wont load boot on attiny 85
Clawson, that looks more like a JTAGICE mkII !!!
Tuesday, 19 August 2014 - 17:54

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