DIY Soldering Station 6 Steps with PicturesCHECKING PARTSThis is a very important step, so please read this section carefully. First of all, there are many clones of HAKKO 9. HAKKO irons with A1. A1. 32. 2 ceramic heater. Cheap 2 3 clones are an early examples of non genuine parts. They use a K type thermocouple and very crappy ceramic heater or simple nichrome coil. More expensive 6. HAKKO 9. 07. The only way you can distinguish clone from an original is by markings on the wire insulation or possible absence of HAKKO brand and model number on ceramic heater itself. I was really lucky and got this one. You can check whether your part is genuine by measuring the resistance between pins or heating element wiring ORIGINAL OR GOOD CLONE Heater 3 4. Ohm. Thermistor 5. Ohm at room temperature. Tip to ESD pin lt 2. Ohm. EVIL CLONES Heater 0 2. Ohm for Nichrome heating, 1. Ohm for crappy ceramic. Thermocouple 0 1. Ohm. Tip to ESD lt 2. Ohm. NOTE If your heating element resistance is very high, it is most likely damaged. You should ask for replacementif possible, or purchase a new genuine A1. POWERTo make things a bit confusing I have drawn my transformer as two transformers. The circuitry itself is very easy and you should have no problems understanding it. At the output of each secondary we will put a rectifier bridge. I bought a few small 1. V 2. A bridges, which should be good enough. The transformer itself only outputs 2. A max on 2. 4V line and the iron is rated at 5. W, so our theoretical max power is going to be around 4. W. 2 2. 4V DC output also has a smoothing 3. V 2. 20. 0u. F capacitor. This might be an overkill, but in the future we will probably connect some more stuff to 2. V line besides ceramic heater. Ive used an LM7. T voltage regulator with some capacitors to drop 9. VDC to 5. VDC to power up the control board with all logic components. PWM CONTROLThe second schematic demonstrates how we are going to control our ceramic heater we acquire the PWM signal from ATMega microcontroller and send it through PC8. IRF5. 40 mosfet. Resistor values at this stage are purely theoretical approximations and may be adjusted in the final design. Pins 1 and 2 correspond to ceramic heater wires. Pins 4 and 5 thermistor wired to the output connector, which we will use as inputs of LM3. Pin 3 is an ESD connection from the soldering iron. CONTROL BOARDAt the heart of my design is an ATMega. UART-scheme.jpg' alt='Atmega8 Uart Program In C' title='Atmega8 Uart Program In C' />This is actually the first time I work with something other than ATTiny. ATTiny. 23. 13. This MCU gives us enough IO pins to avoid using shift registers for IO and simplify our design. Three OC pins will provide enough PWM channels for future upgrades secondary iron for example, while tons of available ADC channels can provide additional temperature monitoring capabilities. Firstly i try my M16 usart communication to my pc. M16 on the hyper terminal. As youve probably noticed, Ive already added an extra PWM channel and an extra temperature sensor connectors for future add ons. At the top right corner we have our rotary encoder connections A and B for direction, plus the push button. LCD connector has been separated into 2 parts 8 pin Supply and Data, 4 pin contrastbacklight control. In addition to essential connectors Ive added 4 pin UART for preliminary debugging well only use RX,TX and GND pins. Ist im Makefile der MCUTyp z. B. mit dem Inhalt atmega8 definiert und wird somit per mmcuatmega8 an den Compiler bergeben, wird beim Einlesen der io. Datei. Many projects using microcontrollers AVR, ATMega8, ATmega163, ATtiny12, ATtiny2313, AT90S1200A, AT90S2313, AT90S8515ATMEGA8515, analog, RF, and all 3 mixed much. Official Atmel AVR development tools and evaluation kits contain a number of starter kits and debugging tools with support for most AVR devices. ATmega8 microcontroller has 23 programmable inputoutput IO pins which can be used for interfacing with external world. It is possible to configure them. Subrat said. Apart from feeding the vcc of the sd card with 3. UART and USART. The UART and USART have already been discussed here. Anyways, lets have a quick recap. UART stands for U niversal A synchronous R eceiver T ransmitter. Powyszy kod nie jest widziany przez kompilator jako poprawny program, wic gdy uytkownik kliknie na Upload to IO board w oknie IDE kopia kodu jest zapisywana. CodeVisionAVR Standard. High Performance ANSI C Compiler for Atmel AVR microcontrollers by XGraph. Free Midi Reggae Drum Patterns. ISP connector is not implemented. We will use a DIP 2. R4 and R8 control the gain of corresponding amplifier circuits x. Some things may change in the final design, but overall structure stays the same.