Recent content by hamtech

Here is the circuit (working) of the axe033 minus the clock element. Can be used to make your own interface board for the axe033-IC replacement.

I have a project (DS1307 Clock/Temp Sensor/Humidity Sensor which requires a 4 line LCD and I wish to use I2C comms so means using an AXE033 . I am unable to buy either the clock/controller Board by itself (to use with my own LCDs) or with a 4 line display from the Picaxe shop. When I...

I have bought a Funduino 16x2 I2C LCD display thinking it would work with a PicAxe 20X2. The limited info that comes with it suggests that the I2C address is 0x27. In trying a simple "Hello World" program using the address 0x27 I do not get anything on the LCD. The LCD is powered and I have...

I am doing a project to rotate my HF antenna using a picaxe, 4 x 3 key pad and a LCD display. To do this effectively I need to run two tasks, one for the display bargraph and bearing readout and the other to monitor the keypad and service an interupt from my 8574 chip. This all works using a...

I am working on a project to control my HF Beam antenna with a 14M2. I am trying to display a bar graph of the bearing as well as the bearing itself. I am using Nick12AB's very good serial bar graph routine and it all works fine when I use the ADC in 8 bit mode, i.e. the output is 0-255 ...

I have been trying to create a RTTY tuning aid similar in function to the Toni Tuna I built years ago. I have been trying to modify Nick12AB's improved bargraph code so that instead of getting a bar graph I get a moving indicator as I sweep the voltage up and down on one of the ADC inputs on...

Digital Audio selection by Picaxe Digital Voter: The purpose of this project is use a 28X2 picaxe to choose the strongest audio from three NOAA weather satelite receivers. It works on the basis that the level of audio rises from a low point to a higher point as the satellite receiver rises...

GPS Based Time Zone Clock I have described a MSF based TimeZone clock and posted it in the finished projects section. The only bugbear with the project was that on occasion MSF tranmitters are maintained and the signal is lost. I did note spurious info fed to the clock chip. Once the...

And the circuit

MSF Based Time Zone Clock I am a radio amateur and it is very useful to have a clock display showing the times in other parts of the world so I set about building one using a DS1307 and a Picaxe chip.. I then thought to link the DS1307 to a accurate time source and decided to use MSF on...

Hi, I have built a GPS based regional time clock which doubles as a UTC clock. At present I am receiving all the messages but I only want the NMEA messages "GGA" and "RMC" all others being off. I have tried every thing I can to get them to turn off. See attached test code, which displays UTC...

I am installing a remote head for.a mobile transceiver in my car and as i am unable to use a microphone whilst driving i Will be using aheadset, which is my problem. i need to be able to access the repeater near to where i live. This takes the form of a 1750hz tone burst lasting for about 2...

In another thread i am trying to light leds in accordance with the output from a MSGEQ7 audio chip. while I await the arrival of these chips I have been experimenting with pwmout to drive an led. Using a pot on adc channel three to provide a variable input level i am using the readadc output...

I have in mind using a Picaxe 20X2 and the new Graphic analyser chip MSGEQ7 to make a colour organ . My problem is with using PWM. I know what it is, but don't understand the difference of implementation on a PICAXE chip. Those I have looked at have both HPWM and a PWM output. The MSGEQ7...

I have two separate 20X2 boards. One receives MSF and displays it on a LCD display in a serial mode only. I have a second 20X2 board built before, that displays different time zones, reading the current time from a DS1307 chip and adding the time difference to the region it is currently...