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How to edit a Mini 0805 DVR firmware and have a custom video bitrate

Darius — Tue, 10 May 2016 17:10:02 +0000

A Mini 0805 dash cam is based on am Ambarella A7 processor and there is the tool to easily modify firmware an have a custom bit rate settings. So you can modify it to suite your needs. A bitrate edit is possible withthe bitrate edit tool called An Ambarella cross platform firmware editor. After opening […]

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Arduino based Temperature and Humidity/Humidex meter with DHT22 sensor and color LCD

Darius — Sat, 08 Feb 2014 22:14:51 +0000

This project consist of Arduino board, serial TFT LCD 128×160 display, DHT22 sensor and obviously bread board and jumpwires. Project features: Temperature measurements : -40 – 125° C, +/- 0.2° C Humidity measurements : 0 – 100% , +/- 5 % Update rate 2 s Humidex(“describe how hot the weather feels to the average person, […]

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Reading temperature from LM92 digital sensor with Arduino

Darius — Mon, 07 Oct 2013 11:19:12 +0000

LM92 is digital temperature sensor manufactured by Texas Instruments. It stands out with maximum +/- 0.33° C accuracy (at 30° C) and thermostat functions with hardware output and I²C interface. Continuous LM92 temperature reading. I’ll show you how to just read temperature while ignoring other LM92 capabilities. A0 and A1 pins define LM92 address for communication, […]

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How to connect to diagnostics port of AC Stag gas controllers without special cable

Darius — Wed, 11 Sep 2013 17:04:13 +0000

Stag gas controllers have 4 pin socket for diagnostic purposes. AcGasSynchro software can be downloaded free, but you need cable/adapter to connect USB port of a computer to this special socket. If you don’t plan running automotive businesses and just curious to play with diagnostics software once or twice is not worth to buy a […]

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STM32F4DISCOVERY – great board for starting learn ARM microcontrollers

Darius — Tue, 28 Feb 2012 16:46:21 +0000

STM32F4DISCOVERY is evaluation board with 32 bit ARM microcontroller and I’m surprised what features it can offer for around 11 euros. Main features: STM32F407VGT6 32-bit ARM microcontroller @168 MHz with 1 MB Flash, 192 KB RAM. Hardware debugging(limited On-board ST-LINK) via USB USB OTG port for connecting mouses, keyboards, USB flash drives 3 axis digital accelerometer ±2g/±8g […]

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Atmega328 Development Kit

Darius — Sat, 05 Nov 2011 16:00:39 +0000

This is a very basic Atmega328 development kit It includes: Atmega 328 8 bit microcontroller with 20 MHz crystal resonator PCB board with place for external components Power circuit that allows powering Atmega directly(2.7-5.5 V), or through a L7805 voltage regulator(8-35 V). L7805 circuit includes a thermal fuse. 10 pin ISP connection for programming. A […]

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Very simple Arduino Lithium-ion battery capacity tester/discharge monitor

Darius — Sun, 04 Sep 2011 15:34:38 +0000

This is a very simple capacity tester. It consists of single resistor that discharges battery. Arduino measures the voltage drop across resistor. According to Ohm’s Law current = voltage/resistance. Every second value of current is divided by 3600 and summed up to get the capacity expressed in Ah (Amp per hour). I have used two […]

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Arduino and ultra sonic range measurement module or how to measure the pulse time with a hardware timer and an interrupt

Darius — Tue, 02 Aug 2011 20:47:51 +0000

SEN136B5B is a Ultra Sonic range measurement from SeedStudio. It can measure the distance by sending a 40k Hz ultra sound impulse via the transmitter and calculating time needed for echo to reach receiver. Detecting range: 3cm-4m. More information about device. In the description of module is mentioned that it is compatible with Arduino library, […]

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Simple angle meter using ADXL335 accelerometer [Arduino]

Darius — Sun, 17 Jul 2011 18:12:43 +0000

ADXL335 is 3 axis accelerometer with analog output from Analog Devices. You can buy it as an evaluation kit with standard 2,5 mm connector. ADXL335 acceleration measurement range is +/- 3 g. Supply voltage is 1.8 – 3.6 V, however all specifications at the datasheet is given at 3.0 V. This accelerometer has 3 outputs […]

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Start with IAR Embedded Workbench for Atmel AVR: Attiny13 LED blink with timer interrupt

Darius — Sat, 12 Mar 2011 16:42:35 +0000

This short guide is about starting first project with IAR Embedded Workbench for Atmel AVR. IDE is not free, bet there is free KickStart edition with 4KB code limit. After IAR Embedded Workbench launch choose to create a new project. Please select “C” and AVR Studio compatible output. Save project with desired name. Click right […]

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