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Build your own mobile device
Hi,   I have put together all the source code, and schematics of Cypher (https://www.youtube.com/watch?v=uZKjCbnfZWw). Cypher is an open source fully portable device...
Monday, 16 March 2020 - 05:40
Allocating a larger u-boot image
Anyone has experience modifying the bootloader for ARM procesors (specifically, modifying U-BOOT for microprocessors running Linux)?   I am compiling my own kernel and...
Saturday, 7 July 2018 - 00:48
ATECC108A vs ATAES132
Hi,   I am working on a project that I need to do some secure authentication.    I bought the cryptocape from Sparkfun, and my two top candidates are the...
Sunday, 20 May 2018 - 05:57
Serial port data corrupted when sending a specific pattern of bytes
I have a python script that sends a stream of data, and then I have a Linux embedded computer receiving the data (code written in C++). Most of the times it works, however, I am...
Thursday, 17 May 2018 - 20:58
Does the Atmega328p support more than 1 I2C slaves?
Hi,   I am connecting an Atmega328p to an IMU (LSM6DS33) and a OLED display (SSD1306) both as I2C slaves (and of course the AVR as the master). I have tried the code...
Friday, 2 March 2018 - 10:59
I2C of LSM6DSD33 on Atmega328P
So I recently bought an IMU from Pololu (https://www.pololu.com/product/2738). I've used their old versions of IMUs in the past, but now that I got this new one, I am unable to...
Saturday, 24 February 2018 - 09:04
Password-protect a Mifare Classic 1K (passive NFC tag) with an AVR and RC522
So I am using this library: https://github.com/ekapujiw2002/... with an Atmega328P reading and writing to the Mifare 1k classic NFC tag using the RC522 chip. The tag's ...
Tuesday, 20 February 2018 - 13:14
Byte array and bitwise operator for LCD
I am trying to get to read individual bits of a byte array. I am basically iterating through the byte array and want to tell whether each individual bit is 0 or 1.    My...
Saturday, 10 February 2018 - 17:13
Atmega328p 32 MLF vs PDIP?
Hi, I have used the Atmega328P in the PDIP package. But recently I needed an SMD solution, so I ordered some PCBs with the Atmega328P 32MLF assumming that the microcontrollers...
Thursday, 8 May 2014 - 20:45
Program stops receiving serial data
Hi, I am constantly sending serial data via bluetooth with an HC05 bluetooth module and an atmel microcontroller (at a baud rate of 115200). The problem is that when reading the...
Saturday, 8 March 2014 - 16:22
Improving latency of HC-05 bluetooth module
Hi, I need to send the raw data from an accelerometer to my computer. I am reading the accelerometer's data with the atmega328P (the whole circuit is at 3.3V). I am then sending...
Friday, 18 October 2013 - 15:21
Using an accelerometer to estimate velocity
Hi, I am interested in calculating the speed of an object using the data from an accelerometer. I have a LSM303DLM accelerometer and a gyroscope that I am using to estimate the...
Sunday, 13 October 2013 - 07:47

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